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U.S. Securities and Exchange Commission's Electronic Data Gathering, Analysis, and Retrieval system Sec14 Mar 2019 U.S. Securities and Exchange Commission's Electronic Data Gathering, Analysis, and Retrieval system, United States

Text

Entity

entityName LISATA THERAPEUTICS, INC.
Cik 320017
Form 10-K
Filed 2019-03-14
Fp FY
Fy 2018
Accn 0000320017-19-000024

Facts up to 2019-03-08

Description Indicate number of shares or other units outstanding of each of registrant's classes of capital or common stock or other ownership interests, if and as stated on cover of related periodic report. Where multiple classes or units exist define each class/interest by adding class of stock items such as Common Class A [Member], Common Class B [Member] or Partnership Interest [Member] onto the Instrument [Domain] of the Entity Listings, Instrument.
Fact EntityCommonStockSharesOutstanding
Frame CY2019Q1I
Label Entity Common Stock, Shares Outstanding
Taxonomy dei
Unit shares
Val 9,950,482

Facts up to 2018-12-31

  1. Description Amount of the liabilities, classified as other, for deferred compensation arrangements payable within one year or the operating cycle, if longer.
    Fact OtherDeferredCompensationArrangementsLiabilityCurrent
    Frame CY2018Q4I
    Label Other Deferred Compensation Arrangements, Liability, Current
    Taxonomy us-gaap
    Unit USD
    Val 0
  2. Description Amount of income (expense) related to nonoperating activities, classified as other.
    Fact OtherNonoperatingIncomeExpense
    Label Other Nonoperating Income (Expense)
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 824,000
  3. Description Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.
    Fact IncomeTaxExpenseBenefit
    Label Income Tax Expense (Benefit)
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 0
  4. Description Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer.
    Fact PrepaidExpenseAndOtherAssetsCurrent
    Label Prepaid Expense and Other Assets, Current
    Taxonomy us-gaap
    Unit USD
    Val 1,053,000
  5. Description Aggregate par or stated value of issued nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable preferred shares, par value and other disclosure concepts are in another section within stockholders' equity.
    Fact PreferredStockValue
    Label Preferred Stock, Value, Issued
    Taxonomy us-gaap
    Unit USD
    Val 0
  6. Description Amount of cash inflow (outflow) of investing activities of discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.
    Fact CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations
    Frame CY2018
    Label Cash Provided by (Used in) Investing Activities, Discontinued Operations
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 0
  7. Description Amount of investment in marketable security.
    Fact MarketableSecurities
    Label Marketable Securities
    Taxonomy us-gaap
    Unit USD
    Val 32,754,000
  8. Description Amount of cash inflow (outflow) of financing activities of discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.
    Fact CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations
    Frame CY2018
    Label Cash Provided by (Used in) Financing Activities, Discontinued Operations
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 0
  9. Description Amount after tax and reclassification adjustments of other comprehensive income (loss).
    Fact OtherComprehensiveIncomeLossNetOfTax
    Label Other Comprehensive Income (Loss), Net of Tax
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val -4,000
  10. Description Amount after tax of income (loss) from continuing operations attributable to the noncontrolling interest.
    Fact IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity
    Label Income (Loss) from Continuing Operations, Net of Tax, Attributable to Noncontrolling Interest
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val -1,000
  11. Description Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.
    Fact NetCashProvidedByUsedInFinancingActivities
    Label Net Cash Provided by (Used in) Financing Activities
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 824,000
  12. Description Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations.
    Fact DeferredIncomeTaxExpenseBenefit
    Frame CY2018
    Label Deferred Income Tax Expense (Benefit)
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 0
  13. Description Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).
    Fact AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
    Label Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax
    Taxonomy us-gaap
    Unit USD
    Val 32,000
  14. Description Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from deferred income.
    Fact DeferredTaxAssetsDeferredIncome
    Label Deferred Tax Assets, Deferred Income
    Taxonomy us-gaap
    Unit USD
    Val 1,033,000
  15. Description Number of common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date. This stock has no voting rights and receives no dividends.
    Fact TreasuryStockShares
    Label Treasury Stock, Shares
    Taxonomy us-gaap
    Unit shares
    Val 11,080
  16. Description Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in second through fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).
    Fact AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue
    Label Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Five
    Taxonomy us-gaap
    Unit USD
    Val 0
  17. Description The portion of earnings or loss from continuing operations before income taxes that is attributable to domestic operations.
    Fact IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
    Label Income (Loss) from Continuing Operations before Income Taxes, Domestic
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val -16,168,000
  18. Description Amount after tax of income (loss) from a discontinued operation including the portion attributable to the noncontrolling interest. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal.
    Fact IncomeLossFromDiscontinuedOperationsNetOfTax
    Frame CY2018
    Label Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 0
  19. Description The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.
    Fact PaymentsToAcquirePropertyPlantAndEquipment
    Label Payments to Acquire Property, Plant, and Equipment
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 134,000
  20. Description The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.
    Fact ProfitLoss
    Label Net Income (Loss), Including Portion Attributable to Noncontrolling Interest
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val -16,168,000
  21. Description Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.
    Fact ComprehensiveIncomeNetOfTax
    Label Comprehensive Income (Loss), Net of Tax, Attributable to Parent
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val -16,171,000
  22. Description Amount after tax of income (loss) from a discontinued operation attributable to the parent. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal.
    Fact IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity
    Frame CY2018
    Label Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 0
  23. Description Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.
    Fact OperatingLeasesFutureMinimumPaymentsDueInFourYears
    Frame CY2018Q4I
    Label Operating Leases, Future Minimum Payments, Due in Four Years
    Taxonomy us-gaap
    Unit USD
    Val 130,000
  24. Description Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity.
    Fact StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
    Label Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest
    Taxonomy us-gaap
    Unit USD
    Val 37,454,000
  25. Description The current cash, cash equivalents and investments that are restricted as to withdrawal or usage. Restrictions may include legally restricted deposits held as compensating balances against short-term borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits. Excludes compensating balance arrangements that are not agreements which legally restrict the use of cash amounts shown on the balance sheet. Includes current cash equivalents and investments that are similarly restricted as to withdrawal, usage or disposal.
    Fact RestrictedCashAndInvestmentsCurrent
    Label Restricted Cash and Investments, Current
    Taxonomy us-gaap
    Unit USD
    Val 5,064,000
  26. Description Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.
    Fact PropertyPlantAndEquipmentNet
    Label Property, Plant and Equipment, Net
    Taxonomy us-gaap
    Unit USD
    Val 165,000
  27. Description Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer.
    Fact PreferredStockParOrStatedValuePerShare
    Label Preferred Stock, Par or Stated Value Per Share
    Taxonomy us-gaap
    Unit USD/shares
    Val 0.01
  28. Description Amount of increase (decrease) in the valuation allowance for a specified deferred tax asset.
    Fact ValuationAllowanceDeferredTaxAssetChangeInAmount
    Frame CY2018
    Label Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 0
  29. Description Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations, attributable to increase (decrease) in the income tax rates.
    Fact IncomeTaxReconciliationChangeInEnactedTaxRate
    Label Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 0
  30. Description Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences, classified as other.
    Fact DeferredTaxAssetsOther
    Label Deferred Tax Assets, Other
    Taxonomy us-gaap
    Unit USD
    Val 525,000
  31. Description Amount of expenses incurred but not yet paid classified as other.
    Fact OtherAccruedLiabilitiesCurrentAndNoncurrent
    Label Other Accrued Liabilities
    Taxonomy us-gaap
    Unit USD
    Val 516,000
  32. Description Amount of cash outflow to satisfy grantee's tax withholding obligation for award under share-based payment arrangement.
    Fact PaymentsRelatedToTaxWithholdingForShareBasedCompensation
    Label Payment, Tax Withholding, Share-based Payment Arrangement
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 403,000
  33. Description Amount of noncurrent assets classified as other.
    Fact OtherAssetsNoncurrent
    Label Other Assets, Noncurrent
    Taxonomy us-gaap
    Unit USD
    Val 309,000
  34. Description Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year.
    Fact OperatingLeasesFutureMinimumPaymentsDue
    Frame CY2018Q4I
    Label Operating Leases, Future Minimum Payments Due
    Taxonomy us-gaap
    Unit USD
    Val 1,179,000
  35. Description Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.
    Fact OperatingLeasesFutureMinimumPaymentsDueInThreeYears
    Frame CY2018Q4I
    Label Operating Leases, Future Minimum Payments, Due in Three Years
    Taxonomy us-gaap
    Unit USD
    Val 308,000
  36. Description Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.
    Fact ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue
    Label Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value
    Taxonomy us-gaap
    Unit USD
    Val 3,300
  37. Description Amount of cash paid for interest, excluding capitalized interest, classified as operating activity. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount.
    Fact InterestPaidNet
    Label Interest Paid, Excluding Capitalized Interest, Operating Activities
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 5,000
  38. Description Amount of deferred federal income tax expense (benefit) pertaining to income (loss) from continuing operations.
    Fact DeferredFederalIncomeTaxExpenseBenefit
    Frame CY2018
    Label Deferred Federal Income Tax Expense (Benefit)
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 0
  39. Description Amount of liabilities classified as other, due after one year or the normal operating cycle, if longer.
    Fact OtherLiabilitiesNoncurrent
    Label Other Liabilities, Noncurrent
    Taxonomy us-gaap
    Unit USD
    Val 1,507,000
  40. Description Amount of deferred income tax expense (benefit) and income tax credits.
    Fact DeferredIncomeTaxesAndTaxCredits
    Frame CY2018
    Label Deferred Income Taxes and Tax Credits
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 0
  41. Description Amount of state and local current and deferred income tax expense (benefit) attributable to continuing operations.
    Fact StateAndLocalIncomeTaxExpenseBenefitContinuingOperations
    Frame CY2018
    Label State and Local Income Tax Expense (Benefit), Continuing Operations
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 0
  42. Description Amount of increase (decrease) in cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; excluding effect from exchange rate change. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.
    Fact CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect
    Frame CY2018
    Label Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Excluding Exchange Rate Effect
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val -23,869,000
  43. Description Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.
    Fact IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
    Label Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val -16,168,000
  44. Description Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).
    Fact AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue
    Label Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, Year One
    Taxonomy us-gaap
    Unit USD
    Val 37,818,000
  45. Description Cash includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the customer may deposit additional funds at any time and effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid Investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Short-term investments, exclusive of cash equivalents, generally consist of marketable securities intended to be sold within one year (or the normal operating cycle if longer) and may include trading securities, available-for-sale securities, or held-to-maturity securities (if maturing within one year), as applicable.
    Fact CashCashEquivalentsAndShortTermInvestments
    Label Cash, Cash Equivalents, and Short-term Investments
    Taxonomy us-gaap
    Unit USD
    Val 37,818,000
  46. Description Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; including, but not limited to, disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.
    Fact CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
    Label Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations
    Taxonomy us-gaap
    Unit USD
    Val 10,299,000
  47. Description Amount before allocation of valuation allowances of deferred tax asset attributable to deductible alternative minimum tax credit carryforwards.
    Fact DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax
    Frame CY2018Q4I
    Label Deferred Tax Assets, Tax Credit Carryforwards, Alternative Minimum Tax
    Taxonomy us-gaap
    Unit USD
    Val 0
  48. Description Amount by which current fair value of underlying stock exceeds exercise price of fully vested and expected to vest options outstanding. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.
    Fact ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue
    Frame CY2018Q4I
    Label Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value
    Taxonomy us-gaap
    Unit USD
    Val 3,300
  49. Description Amount of cash outflow for purchase of marketable security.
    Fact PaymentsToAcquireMarketableSecurities
    Label Payments to Acquire Marketable Securities
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 69,690,000
  50. Description Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).
    Fact AvailableForSaleDebtSecuritiesAmortizedCostBasis
    Label Debt Securities, Available-for-sale, Amortized Cost
    Taxonomy us-gaap
    Unit USD
    Val 37,850,000
  51. Description The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations.
    Fact IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
    Label Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val -3,395,000
  52. Description Face amount or stated value per share of common stock.
    Fact CommonStockParOrStatedValuePerShare
    Label Common Stock, Par or Stated Value Per Share
    Taxonomy us-gaap
    Unit USD/shares
    Val 0.00
  53. Description Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.
    Fact AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
    Label Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment
    Taxonomy us-gaap
    Unit USD
    Val 184,000
  54. Description Amount of current income tax expense (benefit) pertaining to taxable income (loss) from continuing operations.
    Fact CurrentIncomeTaxExpenseBenefit
    Frame CY2018
    Label Current Income Tax Expense (Benefit)
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 0
  55. Description The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.
    Fact ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
    Frame CY2018Q4I
    Label Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number
    Taxonomy us-gaap
    Unit shares
    Val 30,000
  56. Description Amount of liabilities and equity items, including the portion of equity attributable to noncontrolling interests, if any.
    Fact LiabilitiesAndStockholdersEquity
    Label Liabilities and Equity
    Taxonomy us-gaap
    Unit USD
    Val 44,580,000
  57. Description Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to state and local income tax expense (benefit).
    Fact IncomeTaxReconciliationStateAndLocalIncomeTaxes
    Label Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 0
  58. Description Reduction in cash due to no longer including the former subsidiary's cash in the consolidated entity's cash.
    Fact CashDivestedFromDeconsolidation
    Frame CY2018
    Label Cash Divested from Deconsolidation
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 0
  59. Description Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.
    Fact AllocatedShareBasedCompensationExpense
    Label Share-based Payment Arrangement, Expense
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 2,453,000
  60. Description Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities.
    Fact AccruedLiabilitiesCurrentAndNoncurrent
    Label Accrued Liabilities
    Taxonomy us-gaap
    Unit USD
    Val 4,857,000
  61. Description The cumulative amount of the reporting entity's undistributed earnings or deficit.
    Fact RetainedEarningsAccumulatedDeficit
    Label Retained Earnings (Accumulated Deficit)
    Taxonomy us-gaap
    Unit USD
    Val -397,977,000
  62. Description The cash inflow from sale of machinery and equipment.
    Fact ProceedsFromSaleOfMachineryAndEquipment
    Label Proceeds from Sale of Machinery and Equipment
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 2,550,000
  63. Description Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to nondeductible expenses.
    Fact IncomeTaxReconciliationNondeductibleExpense
    Label Effective Income Tax Rate Reconciliation, Nondeductible Expense, Amount
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 11,000
  64. Description Amount after tax of income (loss) from continuing operations attributable to the parent.
    Fact IncomeLossFromContinuingOperations
    Frame CY2018
    Label Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val -16,167,000
  65. Description The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.
    Fact RepaymentsOfLongTermDebt
    Frame CY2018
    Label Repayments of Long-term Debt
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 0
  66. Description Value, after forfeiture, of shares issued under share-based payment arrangement. Excludes employee stock ownership plan (ESOP).
    Fact StockIssuedDuringPeriodValueShareBasedCompensation
    Label Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 2,053,000
  67. Description Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.
    Fact DeferredTaxAssetsValuationAllowance
    Label Deferred Tax Assets, Valuation Allowance
    Taxonomy us-gaap
    Unit USD
    Val 68,831,000
  68. Description Amount of cash inflow (outflow) of investing activities, excluding discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.
    Fact NetCashProvidedByUsedInInvestingActivitiesContinuingOperations
    Frame CY2018
    Label Net Cash Provided by (Used in) Investing Activities, Continuing Operations
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val -4,707,000
  69. Description Percentage of domestic federal statutory tax rate applicable to pretax income (loss).
    Fact EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
    Frame CY2018
    Label Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent
    Start 2018-01-01
    Taxonomy us-gaap
    Unit pure
    Val 0.21
  70. Description Amount of gain (loss) on sale or disposal of assets, including but not limited to property plant and equipment, intangible assets and equity in securities of subsidiaries or equity method investee.
    Fact GainLossOnDispositionOfAssets1
    Label Gain (Loss) on Disposition of Assets
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 1,429,000
  71. Description Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from intangible assets including goodwill.
    Fact DeferredTaxAssetsGoodwillAndIntangibleAssets
    Label Deferred Tax Assets, Goodwill and Intangible Assets
    Taxonomy us-gaap
    Unit USD
    Val 199,000
  72. Description Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income. Excludes changes in equity resulting from investments by owners and distributions to owners.
    Fact ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest
    Label Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val -16,172,000
  73. Description The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income.
    Fact IncomeTaxesPaid
    Label Income Taxes Paid
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 0
  74. Description Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.
    Fact OperatingLeasesFutureMinimumPaymentsDueInTwoYears
    Frame CY2018Q4I
    Label Operating Leases, Future Minimum Payments, Due in Two Years
    Taxonomy us-gaap
    Unit USD
    Val 327,000
  75. Description Fair value of share-based compensation granted to nonemployees as payment for services rendered or acknowledged claims.
    Fact IssuanceOfStockAndWarrantsForServicesOrClaims
    Label Issuance of Stock and Warrants for Services or Claims
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 2,453,000
  76. Description Amount, after tax and before adjustment, of unrealized holding gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Excludes unrealized gain (loss) on investment in debt security measured at amortized cost (held-to-maturity) from transfer to available-for-sale.
    Fact OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax
    Label OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val -4,000
  77. Description Amount of cash inflow (outflow) of operating activities of discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.
    Fact CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations
    Frame CY2018
    Label Cash Provided by (Used in) Operating Activities, Discontinued Operations
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 0
  78. Description Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations.
    Fact CurrentFederalTaxExpenseBenefit
    Frame CY2018
    Label Current Federal Tax Expense (Benefit)
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 0
  79. Description Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in second through fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).
    Fact AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost
    Label Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year One Through Five
    Taxonomy us-gaap
    Unit USD
    Val 0
  80. Description Amount of cash inflow (outflow) from investing activities, including discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.
    Fact NetCashProvidedByUsedInInvestingActivities
    Label Net Cash Provided by (Used in) Investing Activities
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val -4,707,000
  81. Description Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).
    Fact AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost
    Label Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, Year One
    Taxonomy us-gaap
    Unit USD
    Val 37,850,000
  82. Description Amount of increase (decrease) in prepaid expenses, and assets classified as other.
    Fact IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
    Label Increase (Decrease) in Prepaid Expense and Other Assets
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val -261,000
  83. Description Amount of current and deferred federal income tax expense (benefit) attributable to income (loss) from continuing operations.
    Fact FederalIncomeTaxExpenseBenefitContinuingOperations
    Frame CY2018
    Label Federal Income Tax Expense (Benefit), Continuing Operations
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 0
  84. Description Value of stock issued as a result of the exercise of stock options.
    Fact StockIssuedDuringPeriodValueStockOptionsExercised
    Label Stock Issued During Period, Value, Stock Options Exercised
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 355,000
  85. Description The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.
    Fact PreferredStockSharesAuthorized
    Label Preferred Stock, Shares Authorized
    Taxonomy us-gaap
    Unit shares
    Val 20,000,000
  86. Description Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased.
    Fact PreferredStockSharesOutstanding
    Label Preferred Stock, Shares Outstanding
    Taxonomy us-gaap
    Unit shares
    Val 10,000
  87. Description Amount of the cost of borrowed funds accounted for as interest expense.
    Fact InterestExpense
    Label Interest Expense
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 5,000
  88. Description Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line.
    Fact LeaseAndRentalExpense
    Frame CY2018
    Label Operating Leases, Rent Expense
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 800,000
  89. Description Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.
    Fact CashAndCashEquivalentsAtCarryingValue
    Label Cash and Cash Equivalents, at Carrying Value
    Taxonomy us-gaap
    Unit USD
    Val 10,299,000
  90. Description Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, without jurisdictional netting.
    Fact DeferredTaxAssetsLiabilitiesNet
    Label Deferred Tax Assets, Net
    Taxonomy us-gaap
    Unit USD
    Val 68,831,000
  91. Description Amount of cash inflow (outflow) of financing activities, excluding discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.
    Fact NetCashProvidedByUsedInFinancingActivitiesContinuingOperations
    Frame CY2018
    Label Net Cash Provided by (Used in) Financing Activities, Continuing Operations
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 824,000
  92. Description The cash inflow from the issuance of common stock, preferred stock, treasury stock, stock options, and other types of equity.
    Fact ProceedsFromIssuanceOrSaleOfEquity
    Label Proceeds from Issuance or Sale of Equity
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 1,031,000
  93. Description Excess of issue price over par or stated value of the entity's capital stock and amounts received from other transactions involving the entity's stock or stockholders. Includes adjustments to additional paid in capital. Some examples of such adjustments include recording the issuance of debt with a beneficial conversion feature and certain tax consequences of equity instruments awarded to employees. Use this element for the aggregate amount of additional paid-in capital associated with common and preferred stock. For additional paid-in capital associated with only common stock, use the element additional paid in capital, common stock. For additional paid-in capital associated with only preferred stock, use the element additional paid in capital, preferred stock.
    Fact AdditionalPaidInCapital
    Label Additional Paid in Capital
    Taxonomy us-gaap
    Unit USD
    Val 436,433,000
  94. Description Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to revisions of previously reported income tax expense (benefit).
    Fact IncomeTaxReconciliationPriorYearIncomeTaxes
    Label Effective Income Tax Rate Reconciliation, Prior Year Income Taxes, Amount
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val -177,000
  95. Description Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards.
    Fact DeferredTaxAssetsOperatingLossCarryforwards
    Label Deferred Tax Assets, Operating Loss Carryforwards
    Taxonomy us-gaap
    Unit USD
    Val 60,544,000
  96. Description Total number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) issued to shareholders (includes related preferred shares that were issued, repurchased, and remain in the treasury). May be all or portion of the number of preferred shares authorized. Excludes preferred shares that are classified as debt.
    Fact PreferredStockSharesIssued
    Label Preferred Stock, Shares Issued
    Taxonomy us-gaap
    Unit shares
    Val 10,000
  97. Description Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.
    Fact DeferredTaxAssetsGross
    Label Deferred Tax Assets, Gross
    Taxonomy us-gaap
    Unit USD
    Val 68,831,000
  98. Description Per basic share amount, after tax, of income (loss) from the day-to-day business activities of the discontinued operation.
    Fact DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare
    Frame CY2018
    Label Discontinued Operation, Income (Loss) from Discontinued Operation, Net of Tax, Per Basic Share
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD/shares
    Val 0
  99. Description The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period.
    Fact ProceedsFromDivestitureOfBusinesses
    Frame CY2018
    Label Proceeds from Divestiture of Businesses
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 0
  100. Description Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which is directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent (that is, noncontrolling interest, previously referred to as minority interest).
    Fact MinorityInterest
    Label Stockholders' Equity Attributable to Noncontrolling Interest
    Taxonomy us-gaap
    Unit USD
    Val -272,000
  101. Description Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).
    Fact AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
    Label Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax
    Taxonomy us-gaap
    Unit USD
    Val 0
  102. Description Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the valuation allowance for deferred tax assets.
    Fact IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance
    Label Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 2,711,000
  103. Description Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from deferred rent.
    Fact DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsDeferredRent
    Frame CY2018Q4I
    Label Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Deferred Rent
    Taxonomy us-gaap
    Unit USD
    Val 5,000
  104. Description Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.
    Fact WeightedAverageNumberOfSharesOutstandingBasic
    Frame CY2018
    Label Weighted Average Number of Shares Outstanding, Basic
    Start 2018-01-01
    Taxonomy us-gaap
    Unit shares
    Val 9,689,000
  105. Description Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense.
    Fact OperatingExpenses
    Label Operating Expenses
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 16,987,000
  106. Description Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.
    Fact CommonStockSharesIssued
    Label Common Stock, Shares, Issued
    Taxonomy us-gaap
    Unit shares
    Val 9,865,735
  107. Description Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.
    Fact OperatingLeasesFutureMinimumPaymentsDueCurrent
    Frame CY2018Q4I
    Label Operating Leases, Future Minimum Payments Due, Next Twelve Months
    Taxonomy us-gaap
    Unit USD
    Val 414,000
  108. Description Amount of deferred income and obligation to transfer product and service to customer for which consideration has been received or is receivable, classified as current.
    Fact DeferredRevenueCurrent
    Frame CY2018Q4I
    Label Deferred Revenue, Current
    Taxonomy us-gaap
    Unit USD
    Val 2,583,000
  109. Description The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.
    Fact ResearchAndDevelopmentExpense
    Label Research and Development Expense
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 7,594,000
  110. Description Sum of the carrying amounts as of the balance sheet date of all liabilities that are recognized. Liabilities are probable future sacrifices of economic benefits arising from present obligations of an entity to transfer assets or provide services to other entities in the future.
    Fact Liabilities
    Label Liabilities
    Taxonomy us-gaap
    Unit USD
    Val 7,126,000
  111. Description Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.
    Fact PropertyPlantAndEquipmentGross
    Label Property, Plant and Equipment, Gross
    Taxonomy us-gaap
    Unit USD
    Val 349,000
  112. Description Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.
    Fact Assets
    Label Assets
    Taxonomy us-gaap
    Unit USD
    Val 44,580,000
  113. Description The net result for the period of deducting operating expenses from operating revenues.
    Fact OperatingIncomeLoss
    Label Operating Income (Loss)
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val -16,987,000
  114. Description Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, with jurisdictional netting.
    Fact DeferredIncomeTaxAssetsNet
    Label Deferred Income Tax Assets, Net
    Taxonomy us-gaap
    Unit USD
    Val 0
  115. Description Amount of cash restricted as to withdrawal or usage, classified as current. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits.
    Fact RestrictedCashCurrent
    Frame CY2018Q4I
    Label Restricted Cash, Current
    Taxonomy us-gaap
    Unit USD
    Val 0
  116. Description The cash inflow from a borrowing supported by a written promise to pay an obligation.
    Fact ProceedsFromNotesPayable
    Frame CY2018
    Label Proceeds from Notes Payable
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 0
  117. Description The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.
    Fact EarningsPerShareBasic
    Frame CY2018
    Label Earnings Per Share, Basic
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD/shares
    Val -1.67
  118. Description Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).
    Fact AccountsPayableCurrent
    Label Accounts Payable, Current
    Taxonomy us-gaap
    Unit USD
    Val 762,000
  119. Description Amount recognized for the passage of time, typically for liabilities, that have been discounted to their net present values. Excludes accretion associated with asset retirement obligations.
    Fact AccretionExpense
    Label Accretion Expense
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 282,000
  120. Description The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.
    Fact NetIncomeLoss
    Label Net Income (Loss) Attributable to Parent
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val -16,167,000
  121. Description The amount allocated to treasury stock. Treasury stock is common and preferred shares of an entity that were issued, repurchased by the entity, and are held in its treasury.
    Fact TreasuryStockValue
    Label Treasury Stock, Value
    Taxonomy us-gaap
    Unit USD
    Val 708,000
  122. Description Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.
    Fact OperatingLossCarryforwards
    Label Operating Loss Carryforwards
    Taxonomy us-gaap
    Unit USD
    Val 225,100,000
  123. Description Amount of unrealized gain (loss) on investment in marketable security.
    Fact MarketableSecuritiesUnrealizedGainLoss
    Label Marketable Securities, Unrealized Gain (Loss)
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val -4,000
  124. Description Total of the carrying values as of the balance sheet date of obligations incurred through that date and payable for obligations related to services received from employees, such as accrued salaries and bonuses, payroll taxes and fringe benefits.
    Fact EmployeeRelatedLiabilitiesCurrentAndNoncurrent
    Label Employee-related Liabilities
    Taxonomy us-gaap
    Unit USD
    Val 1,758,000
  125. Description The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.
    Fact WeightedAverageNumberOfDilutedSharesOutstanding
    Frame CY2018
    Label Weighted Average Number of Shares Outstanding, Diluted
    Start 2018-01-01
    Taxonomy us-gaap
    Unit shares
    Val 9,689,000
  126. Description The cash inflow associated with the aggregate amount received by the entity through sale or maturity of marketable securities (held-to-maturity or available-for-sale) during the period.
    Fact ProceedsFromSaleAndMaturityOfMarketableSecurities
    Label Proceeds from Sale and Maturity of Marketable Securities
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 62,567,000
  127. Description Amount after tax of income (loss) from continuing operations including portion attributable to the noncontrolling interest.
    Fact IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest
    Frame CY2018
    Label Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val -16,168,000
  128. Description Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from share-based compensation.
    Fact DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost
    Label Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost
    Taxonomy us-gaap
    Unit USD
    Val 6,390,000
  129. Description The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc.
    Fact SellingGeneralAndAdministrativeExpense
    Label Selling, General and Administrative Expense
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 9,393,000
  130. Description Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).
    Fact AccruedLiabilitiesCurrent
    Label Accrued Liabilities, Current
    Taxonomy us-gaap
    Unit USD
    Val 4,857,000
  131. Description Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.
    Fact StockholdersEquity
    Label Stockholders' Equity Attributable to Parent
    Taxonomy us-gaap
    Unit USD
    Val 37,726,000
  132. Description The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production.
    Fact DepreciationAndAmortization
    Label Depreciation, Depletion and Amortization, Nonproduction
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 225,000
  133. Description Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other adjustments.
    Fact IncomeTaxReconciliationOtherAdjustments
    Label Effective Income Tax Rate Reconciliation, Other Adjustments, Amount
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val -1,949,000
  134. Description Amount of cash inflow (outflow) from operating activities, excluding discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.
    Fact NetCashProvidedByUsedInOperatingActivitiesContinuingOperations
    Frame CY2018
    Label Net Cash Provided by (Used in) Operating Activities, Continuing Operations
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val -19,986,000
  135. Description Total obligations incurred as part of normal operations that are expected to be paid during the following twelve months or within one business cycle, if longer.
    Fact LiabilitiesCurrent
    Label Liabilities, Current
    Taxonomy us-gaap
    Unit USD
    Val 5,619,000
  136. Description The amount of net income (loss) from continuing operations per each share of common stock or unit outstanding during the reporting period.
    Fact IncomeLossFromContinuingOperationsPerBasicShare
    Frame CY2018
    Label Income (Loss) from Continuing Operations, Per Basic Share
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD/shares
    Val -1.67
  137. Description Amount of deferred state and local tax expense (benefit) pertaining to income (loss) from continuing operations.
    Fact DeferredStateAndLocalIncomeTaxExpenseBenefit
    Frame CY2018
    Label Deferred State and Local Income Tax Expense (Benefit)
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 0
  138. Description Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income (loss) and other comprehensive income (loss), attributable to noncontrolling interests. Excludes changes in equity resulting from investments by owners and distributions to owners.
    Fact ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest
    Label Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val -1,000
  139. Description Aggregate par or stated value of issued nonredeemable common stock (or common stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable common shares, par value and other disclosure concepts are in another section within stockholders' equity.
    Fact CommonStockValue
    Label Common Stock, Value, Issued
    Taxonomy us-gaap
    Unit USD
    Val 10,000
  140. Description Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from employee compensation.
    Fact DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation
    Label Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Employee Compensation
    Taxonomy us-gaap
    Unit USD
    Val 117,000
  141. Description Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).
    Fact AvailableForSaleSecuritiesDebtSecurities
    Label Debt Securities, Available-for-sale
    Taxonomy us-gaap
    Unit USD
    Val 37,818,000
  142. Description Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.
    Fact NetCashProvidedByUsedInOperatingActivities
    Label Net Cash Provided by (Used in) Operating Activities
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val -19,986,000
  143. Description Amount by which current fair value of underlying stock exceeds exercise price of fully vested and expected to vest exercisable or convertible options. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.
    Fact ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue
    Frame CY2018Q4I
    Label Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Aggregate Intrinsic Value
    Taxonomy us-gaap
    Unit USD
    Val 3,300
  144. Description Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering.
    Fact StockIssuedDuringPeriodValueNewIssues
    Label Stock Issued During Period, Value, New Issues
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 1,029,000
  145. Description Amount of deferred tax liability attributable to taxable temporary differences.
    Fact DeferredIncomeTaxLiabilities
    Label Deferred Tax Liabilities, Gross
    Taxonomy us-gaap
    Unit USD
    Val 0
  146. Description Sum of the carrying values as of the balance sheet date of the portions of long-term notes payable due within one year or the operating cycle if longer.
    Fact NotesPayableCurrent
    Frame CY2018Q4I
    Label Notes Payable, Current
    Taxonomy us-gaap
    Unit USD
    Val 0
  147. Description Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.
    Fact AccumulatedOtherComprehensiveIncomeLossNetOfTax
    Label Accumulated Other Comprehensive Income (Loss), Net of Tax
    Taxonomy us-gaap
    Unit USD
    Val -32,000
  148. Description Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.
    Fact CommonStockSharesOutstanding
    Label Common Stock, Shares, Outstanding
    Taxonomy us-gaap
    Unit shares
    Val 9,865,735
  149. Description The increase (decrease) during the reporting period in current receivables (due within one year or one operating cycle) to be collected from an entity that is controlling, under the control of, or within the same control group as the reporting entity by means of direct or indirect ownership.
    Fact IncreaseDecreaseInDueFromAffiliatesCurrent
    Frame CY2018
    Label Increase (Decrease) in Due from Affiliates, Current
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 0
  150. Description Amount before allocation of valuation allowances of deferred tax asset attributable to deductible charitable contribution carryforwards.
    Fact DeferredTaxAssetsCharitableContributionCarryforwards
    Label Deferred Tax Assets, Charitable Contribution Carryforwards
    Taxonomy us-gaap
    Unit USD
    Val 9,000
  151. Description Amount after tax of income (loss) from a discontinued operation attributable to the noncontrolling interest. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal.
    Fact IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest
    Frame CY2018
    Label Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Noncontrolling Interest
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 0
  152. Description The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.
    Fact DepreciationDepletionAndAmortization
    Label Depreciation, Depletion and Amortization
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 200,000
  153. Description Sum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold, or consumed within one year (or the normal operating cycle, if longer). Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.
    Fact AssetsCurrent
    Label Assets, Current
    Taxonomy us-gaap
    Unit USD
    Val 44,106,000
  154. Description The cash outflow for a borrowing supported by a written promise to pay an obligation.
    Fact RepaymentsOfNotesPayable
    Label Repayments of Notes Payable
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 159,000
  155. Description Amount of current state and local tax expense (benefit) pertaining to income (loss) from continuing operations.
    Fact CurrentStateAndLocalTaxExpenseBenefit
    Frame CY2018
    Label Current State and Local Tax Expense (Benefit)
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 0
  156. Description The maximum number of common shares permitted to be issued by an entity's charter and bylaws.
    Fact CommonStockSharesAuthorized
    Label Common Stock, Shares Authorized
    Taxonomy us-gaap
    Unit shares
    Val 500,000,000
  157. Description The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business).
    Fact NonoperatingIncomeExpense
    Label Nonoperating Income (Expense)
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 819,000
  158. Description Amount of increase (decrease) in operating assets classified as other.
    Fact IncreaseDecreaseInOtherOperatingAssets
    Label Increase (Decrease) in Other Operating Assets
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val -291,000
  159. Description Amount of cash inflow from exercise of option under share-based payment arrangement.
    Fact ProceedsFromStockOptionsExercised
    Label Proceeds from Stock Options Exercised
    Start 2018-01-01
    Taxonomy us-gaap
    Unit USD
    Val 355,000

Facts up to 2018-06-30

Description The aggregate market value of the voting and non-voting common equity held by non-affiliates computed by reference to the price at which the common equity was last sold, or the average bid and asked price of such common equity, as of the last business day of the registrant's most recently completed second fiscal quarter.
Fact EntityPublicFloat
Frame CY2018Q2I
Label Entity Public Float
Taxonomy dei
Unit USD
Val 53,761,507

Facts up to 2018-03-31

Description Carrying amount as of the balance sheet date of amounts due under the terms of governmental, corporate, or foundation grants.
Fact GrantsReceivable
Label Grants Receivable
Taxonomy us-gaap
Unit USD
Val 8,600,000

Facts up to 2017-12-31

  1. Description Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage. Excludes amount for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.
    Fact CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
    Label Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents
    Taxonomy us-gaap
    Unit USD
    Val 34,168,000
  2. Description Amount of the liabilities, classified as other, for deferred compensation arrangements payable within one year or the operating cycle, if longer.
    Fact OtherDeferredCompensationArrangementsLiabilityCurrent
    Frame CY2017Q4I
    Label Other Deferred Compensation Arrangements, Liability, Current
    Taxonomy us-gaap
    Unit USD
    Val 2,233,000
  3. Description Amount of income (expense) related to nonoperating activities, classified as other.
    Fact OtherNonoperatingIncomeExpense
    Frame CY2017
    Label Other Nonoperating Income (Expense)
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 273,000
  4. Description Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.
    Fact IncomeTaxExpenseBenefit
    Frame CY2017
    Label Income Tax Expense (Benefit)
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val -11,527,000
  5. Description Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer.
    Fact PrepaidExpenseAndOtherAssetsCurrent
    Frame CY2017Q4I
    Label Prepaid Expense and Other Assets, Current
    Taxonomy us-gaap
    Unit USD
    Val 1,312,000
  6. Description Aggregate par or stated value of issued nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable preferred shares, par value and other disclosure concepts are in another section within stockholders' equity.
    Fact PreferredStockValue
    Frame CY2017Q4I
    Label Preferred Stock, Value, Issued
    Taxonomy us-gaap
    Unit USD
    Val 0
  7. Description Amount of cash inflow (outflow) of investing activities of discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.
    Fact CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations
    Frame CY2017
    Label Cash Provided by (Used in) Investing Activities, Discontinued Operations
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val -189,000
  8. Description Amount of investment in marketable security.
    Fact MarketableSecurities
    Frame CY2017Q4I
    Label Marketable Securities
    Taxonomy us-gaap
    Unit USD
    Val 25,917,000
  9. Description Amount of cash inflow (outflow) of financing activities of discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.
    Fact CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations
    Frame CY2017
    Label Cash Provided by (Used in) Financing Activities, Discontinued Operations
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val -74,000
  10. Description Amount after tax and reclassification adjustments of other comprehensive income (loss).
    Fact OtherComprehensiveIncomeLossNetOfTax
    Frame CY2017
    Label Other Comprehensive Income (Loss), Net of Tax
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val -28,000
  11. Description Amount after tax of income (loss) from continuing operations attributable to the noncontrolling interest.
    Fact IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity
    Frame CY2017
    Label Income (Loss) from Continuing Operations, Net of Tax, Attributable to Noncontrolling Interest
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val -182,000
  12. Description Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.
    Fact NetCashProvidedByUsedInFinancingActivities
    Frame CY2017
    Label Net Cash Provided by (Used in) Financing Activities
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val -932,000
  13. Description Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations.
    Fact DeferredIncomeTaxExpenseBenefit
    Frame CY2017
    Label Deferred Income Tax Expense (Benefit)
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val -576,000
  14. Description Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).
    Fact AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
    Frame CY2017Q4I
    Label Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax
    Taxonomy us-gaap
    Unit USD
    Val 28,000
  15. Description Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from deferred income.
    Fact DeferredTaxAssetsDeferredIncome
    Frame CY2017Q4I
    Label Deferred Tax Assets, Deferred Income
    Taxonomy us-gaap
    Unit USD
    Val 1,780,000
  16. Description Number of common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date. This stock has no voting rights and receives no dividends.
    Fact TreasuryStockShares
    Frame CY2017Q4I
    Label Treasury Stock, Shares
    Taxonomy us-gaap
    Unit shares
    Val 11,080
  17. Description The portion of earnings or loss from continuing operations before income taxes that is attributable to domestic operations.
    Fact IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
    Frame CY2017
    Label Income (Loss) from Continuing Operations before Income Taxes, Domestic
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val -27,698,000
  18. Description Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; attributable to disposal group, including, but not limited to, discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.
    Fact CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsDisposalGroupIncludingDiscontinuedOperations
    Frame CY2017Q4I
    Label Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Disposal Group, Including Discontinued Operations
    Taxonomy us-gaap
    Unit USD
    Val 0
  19. Description Amount after tax of income (loss) from a discontinued operation including the portion attributable to the noncontrolling interest. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal.
    Fact IncomeLossFromDiscontinuedOperationsNetOfTax
    Frame CY2017
    Label Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 38,399,000
  20. Description The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.
    Fact PaymentsToAcquirePropertyPlantAndEquipment
    Frame CY2017
    Label Payments to Acquire Property, Plant, and Equipment
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 135,000
  21. Description The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.
    Fact ProfitLoss
    Frame CY2017
    Label Net Income (Loss), Including Portion Attributable to Noncontrolling Interest
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 22,228,000
  22. Description Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.
    Fact ComprehensiveIncomeNetOfTax
    Frame CY2017
    Label Comprehensive Income (Loss), Net of Tax, Attributable to Parent
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 22,951,000
  23. Description Amount after tax of income (loss) from a discontinued operation attributable to the parent. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal.
    Fact IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity
    Frame CY2017
    Label Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 38,968,000
  24. Description Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity.
    Fact StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
    Label Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest
    Taxonomy us-gaap
    Unit USD
    Val 50,189,000
  25. Description The current cash, cash equivalents and investments that are restricted as to withdrawal or usage. Restrictions may include legally restricted deposits held as compensating balances against short-term borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits. Excludes compensating balance arrangements that are not agreements which legally restrict the use of cash amounts shown on the balance sheet. Includes current cash equivalents and investments that are similarly restricted as to withdrawal, usage or disposal.
    Fact RestrictedCashAndInvestmentsCurrent
    Frame CY2017Q4I
    Label Restricted Cash and Investments, Current
    Taxonomy us-gaap
    Unit USD
    Val 25,968,000
  26. Description Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.
    Fact PropertyPlantAndEquipmentNet
    Frame CY2017Q4I
    Label Property, Plant and Equipment, Net
    Taxonomy us-gaap
    Unit USD
    Val 257,000
  27. Description Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer.
    Fact PreferredStockParOrStatedValuePerShare
    Frame CY2017Q4I
    Label Preferred Stock, Par or Stated Value Per Share
    Taxonomy us-gaap
    Unit USD/shares
    Val 0.01
  28. Description Amount of increase (decrease) in the valuation allowance for a specified deferred tax asset.
    Fact ValuationAllowanceDeferredTaxAssetChangeInAmount
    Frame CY2017
    Label Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 11,526,000
  29. Description Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations, attributable to increase (decrease) in the income tax rates.
    Fact IncomeTaxReconciliationChangeInEnactedTaxRate
    Frame CY2017
    Label Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 29,809,000
  30. Description Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences, classified as other.
    Fact DeferredTaxAssetsOther
    Frame CY2017Q4I
    Label Deferred Tax Assets, Other
    Taxonomy us-gaap
    Unit USD
    Val 526,000
  31. Description Amount of expenses incurred but not yet paid classified as other.
    Fact OtherAccruedLiabilitiesCurrentAndNoncurrent
    Frame CY2017Q4I
    Label Other Accrued Liabilities
    Taxonomy us-gaap
    Unit USD
    Val 1,743,000
  32. Description Amount of cash outflow to satisfy grantee's tax withholding obligation for award under share-based payment arrangement.
    Fact PaymentsRelatedToTaxWithholdingForShareBasedCompensation
    Frame CY2017
    Label Payment, Tax Withholding, Share-based Payment Arrangement
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 358,000
  33. Description Amount of noncurrent assets classified as other.
    Fact OtherAssetsNoncurrent
    Frame CY2017Q4I
    Label Other Assets, Noncurrent
    Taxonomy us-gaap
    Unit USD
    Val 1,722,000
  34. Description Amount of cash paid for interest, excluding capitalized interest, classified as operating activity. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount.
    Fact InterestPaidNet
    Frame CY2017
    Label Interest Paid, Excluding Capitalized Interest, Operating Activities
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 712,000
  35. Description Amount of deferred federal income tax expense (benefit) pertaining to income (loss) from continuing operations.
    Fact DeferredFederalIncomeTaxExpenseBenefit
    Frame CY2017
    Label Deferred Federal Income Tax Expense (Benefit)
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val -576,000
  36. Description Amount of liabilities classified as other, due after one year or the normal operating cycle, if longer.
    Fact OtherLiabilitiesNoncurrent
    Frame CY2017Q4I
    Label Other Liabilities, Noncurrent
    Taxonomy us-gaap
    Unit USD
    Val 3,873,000
  37. Description Amount of deferred income tax expense (benefit) and income tax credits.
    Fact DeferredIncomeTaxesAndTaxCredits
    Frame CY2017
    Label Deferred Income Taxes and Tax Credits
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val -575,000
  38. Description Amount of state and local current and deferred income tax expense (benefit) attributable to continuing operations.
    Fact StateAndLocalIncomeTaxExpenseBenefitContinuingOperations
    Frame CY2017
    Label State and Local Income Tax Expense (Benefit), Continuing Operations
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val -1,641,000
  39. Description Amount of increase (decrease) in cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; excluding effect from exchange rate change. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.
    Fact CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect
    Frame CY2017
    Label Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Excluding Exchange Rate Effect
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 19,463,000
  40. Description Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.
    Fact IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
    Frame CY2017
    Label Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val -27,698,000
  41. Description Cash includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the customer may deposit additional funds at any time and effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid Investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Short-term investments, exclusive of cash equivalents, generally consist of marketable securities intended to be sold within one year (or the normal operating cycle if longer) and may include trading securities, available-for-sale securities, or held-to-maturity securities (if maturing within one year), as applicable.
    Fact CashCashEquivalentsAndShortTermInvestments
    Frame CY2017Q4I
    Label Cash, Cash Equivalents, and Short-term Investments
    Taxonomy us-gaap
    Unit USD
    Val 51,885,000
  42. Description Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; including, but not limited to, disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.
    Fact CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
    Frame CY2017Q4I
    Label Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations
    Taxonomy us-gaap
    Unit USD
    Val 34,168,000
  43. Description Amount before allocation of valuation allowances of deferred tax asset attributable to deductible alternative minimum tax credit carryforwards.
    Fact DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax
    Frame CY2017Q4I
    Label Deferred Tax Assets, Tax Credit Carryforwards, Alternative Minimum Tax
    Taxonomy us-gaap
    Unit USD
    Val 575,000
  44. Description Amount by which current fair value of underlying stock exceeds exercise price of fully vested and expected to vest options outstanding. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.
    Fact ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue
    Frame CY2017Q4I
    Label Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value
    Taxonomy us-gaap
    Unit USD
    Val 100
  45. Description Amount of cash outflow for purchase of marketable security.
    Fact PaymentsToAcquireMarketableSecurities
    Frame CY2017
    Label Payments to Acquire Marketable Securities
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 60,158,000
  46. Description Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).
    Fact AvailableForSaleDebtSecuritiesAmortizedCostBasis
    Frame CY2017Q4I
    Label Debt Securities, Available-for-sale, Amortized Cost
    Taxonomy us-gaap
    Unit USD
    Val 51,913,000
  47. Description Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other tax credits.
    Fact IncomeTaxReconciliationTaxCreditsOther
    Frame CY2017
    Label Effective Income Tax Rate Reconciliation, Tax Credit, Other, Amount
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 576,000
  48. Description The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations.
    Fact IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
    Frame CY2017
    Label Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val -9,417,000
  49. Description Face amount or stated value per share of common stock.
    Fact CommonStockParOrStatedValuePerShare
    Frame CY2017Q4I
    Label Common Stock, Par or Stated Value Per Share
    Taxonomy us-gaap
    Unit USD/shares
    Val 0.00
  50. Description Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.
    Fact AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
    Frame CY2017Q4I
    Label Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment
    Taxonomy us-gaap
    Unit USD
    Val 832,000
  51. Description Amount of current income tax expense (benefit) pertaining to taxable income (loss) from continuing operations.
    Fact CurrentIncomeTaxExpenseBenefit
    Frame CY2017
    Label Current Income Tax Expense (Benefit)
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val -10,951,000
  52. Description Amount of liabilities and equity items, including the portion of equity attributable to noncontrolling interests, if any.
    Fact LiabilitiesAndStockholdersEquity
    Frame CY2017Q4I
    Label Liabilities and Equity
    Taxonomy us-gaap
    Unit USD
    Val 63,376,000
  53. Description Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to state and local income tax expense (benefit).
    Fact IncomeTaxReconciliationStateAndLocalIncomeTaxes
    Frame CY2017
    Label Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val -1,641,000
  54. Description Reduction in cash due to no longer including the former subsidiary's cash in the consolidated entity's cash.
    Fact CashDivestedFromDeconsolidation
    Frame CY2017
    Label Cash Divested from Deconsolidation
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 6,727,000
  55. Description Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.
    Fact AllocatedShareBasedCompensationExpense
    Frame CY2017
    Label Share-based Payment Arrangement, Expense
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 2,852,000
  56. Description Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities.
    Fact AccruedLiabilitiesCurrentAndNoncurrent
    Frame CY2017Q4I
    Label Accrued Liabilities
    Taxonomy us-gaap
    Unit USD
    Val 7,811,000
  57. Description The cumulative amount of the reporting entity's undistributed earnings or deficit.
    Fact RetainedEarningsAccumulatedDeficit
    Frame CY2017Q4I
    Label Retained Earnings (Accumulated Deficit)
    Taxonomy us-gaap
    Unit USD
    Val -381,810,000
  58. Description The cash inflow from sale of machinery and equipment.
    Fact ProceedsFromSaleOfMachineryAndEquipment
    Frame CY2017
    Label Proceeds from Sale of Machinery and Equipment
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 0
  59. Description Redemption of temporary equity as the result of a triggering event associated with the temporary equity.
    Fact TemporaryEquityEliminationAsPartofReorganization
    Frame CY2017
    Label Temporary Equity, Elimination as Part of Reorganization
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 3,686,000
  60. Description Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to nondeductible expenses.
    Fact IncomeTaxReconciliationNondeductibleExpense
    Frame CY2017
    Label Effective Income Tax Rate Reconciliation, Nondeductible Expense, Amount
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 107,000
  61. Description Amount after tax of income (loss) from continuing operations attributable to the parent.
    Fact IncomeLossFromContinuingOperations
    Frame CY2017
    Label Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val -15,989,000
  62. Description The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.
    Fact RepaymentsOfLongTermDebt
    Frame CY2017
    Label Repayments of Long-term Debt
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 5,651,000
  63. Description Value, after forfeiture, of shares issued under share-based payment arrangement. Excludes employee stock ownership plan (ESOP).
    Fact StockIssuedDuringPeriodValueShareBasedCompensation
    Frame CY2017
    Label Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 2,494,000
  64. Description Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.
    Fact DeferredTaxAssetsValuationAllowance
    Frame CY2017Q4I
    Label Deferred Tax Assets, Valuation Allowance
    Taxonomy us-gaap
    Unit USD
    Val 66,121,000
  65. Description Amount of cash inflow (outflow) of investing activities, excluding discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.
    Fact NetCashProvidedByUsedInInvestingActivitiesContinuingOperations
    Frame CY2017
    Label Net Cash Provided by (Used in) Investing Activities, Continuing Operations
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 41,460,000
  66. Description Percentage of domestic federal statutory tax rate applicable to pretax income (loss).
    Fact EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
    Frame CY2017
    Label Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent
    Start 2017-01-01
    Taxonomy us-gaap
    Unit pure
    Val 0.35
  67. Description Amount of gain (loss) on sale or disposal of assets, including but not limited to property plant and equipment, intangible assets and equity in securities of subsidiaries or equity method investee.
    Fact GainLossOnDispositionOfAssets1
    Frame CY2017
    Label Gain (Loss) on Disposition of Assets
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val -212,000
  68. Description Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from intangible assets including goodwill.
    Fact DeferredTaxAssetsGoodwillAndIntangibleAssets
    Frame CY2017Q4I
    Label Deferred Tax Assets, Goodwill and Intangible Assets
    Taxonomy us-gaap
    Unit USD
    Val 270,000
  69. Description Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income. Excludes changes in equity resulting from investments by owners and distributions to owners.
    Fact ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest
    Frame CY2017
    Label Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 22,200,000
  70. Description The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income.
    Fact IncomeTaxesPaid
    Frame CY2017
    Label Income Taxes Paid
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 0
  71. Description Fair value of share-based compensation granted to nonemployees as payment for services rendered or acknowledged claims.
    Fact IssuanceOfStockAndWarrantsForServicesOrClaims
    Frame CY2017
    Label Issuance of Stock and Warrants for Services or Claims
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 1,963,000
  72. Description Amount, after tax and before adjustment, of unrealized holding gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Excludes unrealized gain (loss) on investment in debt security measured at amortized cost (held-to-maturity) from transfer to available-for-sale.
    Fact OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax
    Frame CY2017
    Label OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val -28,000
  73. Description Amount of cash inflow (outflow) of operating activities of discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.
    Fact CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations
    Frame CY2017
    Label Cash Provided by (Used in) Operating Activities, Discontinued Operations
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val -638,000
  74. Description Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations.
    Fact CurrentFederalTaxExpenseBenefit
    Frame CY2017
    Label Current Federal Tax Expense (Benefit)
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val -9,310,000
  75. Description Amount of cash inflow (outflow) from investing activities, including discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.
    Fact NetCashProvidedByUsedInInvestingActivities
    Frame CY2017
    Label Net Cash Provided by (Used in) Investing Activities
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 41,271,000
  76. Description Amount of increase (decrease) in prepaid expenses, and assets classified as other.
    Fact IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
    Frame CY2017
    Label Increase (Decrease) in Prepaid Expense and Other Assets
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val -1,014,000
  77. Description Amount of current and deferred federal income tax expense (benefit) attributable to income (loss) from continuing operations.
    Fact FederalIncomeTaxExpenseBenefitContinuingOperations
    Frame CY2017
    Label Federal Income Tax Expense (Benefit), Continuing Operations
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val -9,886,000
  78. Description Value of stock issued as a result of the exercise of stock options.
    Fact StockIssuedDuringPeriodValueStockOptionsExercised
    Frame CY2017
    Label Stock Issued During Period, Value, Stock Options Exercised
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 14,000
  79. Description The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.
    Fact PreferredStockSharesAuthorized
    Frame CY2017Q4I
    Label Preferred Stock, Shares Authorized
    Taxonomy us-gaap
    Unit shares
    Val 20,000,000
  80. Description Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased.
    Fact PreferredStockSharesOutstanding
    Frame CY2017Q4I
    Label Preferred Stock, Shares Outstanding
    Taxonomy us-gaap
    Unit shares
    Val 10,000
  81. Description Amount of the cost of borrowed funds accounted for as interest expense.
    Fact InterestExpense
    Frame CY2017
    Label Interest Expense
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 378,000
  82. Description Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line.
    Fact LeaseAndRentalExpense
    Frame CY2017
    Label Operating Leases, Rent Expense
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 1,400,000
  83. Description Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.
    Fact CashAndCashEquivalentsAtCarryingValue
    Frame CY2017Q4I
    Label Cash and Cash Equivalents, at Carrying Value
    Taxonomy us-gaap
    Unit USD
    Val 29,163,000
  84. Description Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, without jurisdictional netting.
    Fact DeferredTaxAssetsLiabilitiesNet
    Frame CY2017Q4I
    Label Deferred Tax Assets, Net
    Taxonomy us-gaap
    Unit USD
    Val 66,696,000
  85. Description Amount of cash inflow (outflow) of financing activities, excluding discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.
    Fact NetCashProvidedByUsedInFinancingActivitiesContinuingOperations
    Frame CY2017
    Label Net Cash Provided by (Used in) Financing Activities, Continuing Operations
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val -858,000
  86. Description The cash inflow from the issuance of common stock, preferred stock, treasury stock, stock options, and other types of equity.
    Fact ProceedsFromIssuanceOrSaleOfEquity
    Frame CY2017
    Label Proceeds from Issuance or Sale of Equity
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 5,702,000
  87. Description Excess of issue price over par or stated value of the entity's capital stock and amounts received from other transactions involving the entity's stock or stockholders. Includes adjustments to additional paid in capital. Some examples of such adjustments include recording the issuance of debt with a beneficial conversion feature and certain tax consequences of equity instruments awarded to employees. Use this element for the aggregate amount of additional paid-in capital associated with common and preferred stock. For additional paid-in capital associated with only common stock, use the element additional paid in capital, common stock. For additional paid-in capital associated with only preferred stock, use the element additional paid in capital, preferred stock.
    Fact AdditionalPaidInCapital
    Frame CY2017Q4I
    Label Additional Paid in Capital
    Taxonomy us-gaap
    Unit USD
    Val 433,044,000
  88. Description Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to revisions of previously reported income tax expense (benefit).
    Fact IncomeTaxReconciliationPriorYearIncomeTaxes
    Frame CY2017
    Label Effective Income Tax Rate Reconciliation, Prior Year Income Taxes, Amount
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 0
  89. Description Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards.
    Fact DeferredTaxAssetsOperatingLossCarryforwards
    Frame CY2017Q4I
    Label Deferred Tax Assets, Operating Loss Carryforwards
    Taxonomy us-gaap
    Unit USD
    Val 60,171,000
  90. Description Total number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) issued to shareholders (includes related preferred shares that were issued, repurchased, and remain in the treasury). May be all or portion of the number of preferred shares authorized. Excludes preferred shares that are classified as debt.
    Fact PreferredStockSharesIssued
    Frame CY2017Q4I
    Label Preferred Stock, Shares Issued
    Taxonomy us-gaap
    Unit shares
    Val 10,000
  91. Description Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.
    Fact DeferredTaxAssetsGross
    Frame CY2017Q4I
    Label Deferred Tax Assets, Gross
    Taxonomy us-gaap
    Unit USD
    Val 66,696,000
  92. Description Per basic share amount, after tax, of income (loss) from the day-to-day business activities of the discontinued operation.
    Fact DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare
    Frame CY2017
    Label Discontinued Operation, Income (Loss) from Discontinued Operation, Net of Tax, Per Basic Share
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD/shares
    Val 4.34
  93. Description The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period.
    Fact ProceedsFromDivestitureOfBusinesses
    Frame CY2017
    Label Proceeds from Divestiture of Businesses
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 74,607,000
  94. Description Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which is directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent (that is, noncontrolling interest, previously referred to as minority interest).
    Fact MinorityInterest
    Frame CY2017Q4I
    Label Stockholders' Equity Attributable to Noncontrolling Interest
    Taxonomy us-gaap
    Unit USD
    Val -318,000
  95. Description Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).
    Fact AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
    Frame CY2017Q4I
    Label Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax
    Taxonomy us-gaap
    Unit USD
    Val 0
  96. Description Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the valuation allowance for deferred tax assets.
    Fact IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance
    Frame CY2017
    Label Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val -29,809,000
  97. Description Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from deferred rent.
    Fact DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsDeferredRent
    Frame CY2017Q4I
    Label Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Deferred Rent
    Taxonomy us-gaap
    Unit USD
    Val 3,000
  98. Description Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.
    Fact WeightedAverageNumberOfSharesOutstandingBasic
    Frame CY2017
    Label Weighted Average Number of Shares Outstanding, Basic
    Start 2017-01-01
    Taxonomy us-gaap
    Unit shares
    Val 8,969,000
  99. Description Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense.
    Fact OperatingExpenses
    Frame CY2017
    Label Operating Expenses
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 27,593,000
  100. Description Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.
    Fact CommonStockSharesIssued
    Frame CY2017Q4I
    Label Common Stock, Shares, Issued
    Taxonomy us-gaap
    Unit shares
    Val 9,483,911
  101. Description Amount of deferred income and obligation to transfer product and service to customer for which consideration has been received or is receivable, classified as current.
    Fact DeferredRevenueCurrent
    Frame CY2017Q4I
    Label Deferred Revenue, Current
    Taxonomy us-gaap
    Unit USD
    Val 2,446,000
  102. Description The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.
    Fact ResearchAndDevelopmentExpense
    Frame CY2017
    Label Research and Development Expense
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 15,843,000
  103. Description Sum of the carrying amounts as of the balance sheet date of all liabilities that are recognized. Liabilities are probable future sacrifices of economic benefits arising from present obligations of an entity to transfer assets or provide services to other entities in the future.
    Fact Liabilities
    Frame CY2017Q4I
    Label Liabilities
    Taxonomy us-gaap
    Unit USD
    Val 13,187,000
  104. Description Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.
    Fact PropertyPlantAndEquipmentGross
    Frame CY2017Q4I
    Label Property, Plant and Equipment, Gross
    Taxonomy us-gaap
    Unit USD
    Val 1,089,000
  105. Description Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.
    Fact Assets
    Frame CY2017Q4I
    Label Assets
    Taxonomy us-gaap
    Unit USD
    Val 63,376,000
  106. Description The net result for the period of deducting operating expenses from operating revenues.
    Fact OperatingIncomeLoss
    Frame CY2017
    Label Operating Income (Loss)
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val -27,593,000
  107. Description Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, with jurisdictional netting.
    Fact DeferredIncomeTaxAssetsNet
    Frame CY2017Q4I
    Label Deferred Income Tax Assets, Net
    Taxonomy us-gaap
    Unit USD
    Val 575,000
  108. Description Amount of cash restricted as to withdrawal or usage, classified as current. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits.
    Fact RestrictedCashCurrent
    Frame CY2017Q4I
    Label Restricted Cash, Current
    Taxonomy us-gaap
    Unit USD
    Val 5,005,000
  109. Description The cash inflow from a borrowing supported by a written promise to pay an obligation.
    Fact ProceedsFromNotesPayable
    Frame CY2017
    Label Proceeds from Notes Payable
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 401,000
  110. Description The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.
    Fact EarningsPerShareBasic
    Frame CY2017
    Label Earnings Per Share, Basic
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD/shares
    Val 2.56
  111. Description Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).
    Fact AccountsPayableCurrent
    Frame CY2017Q4I
    Label Accounts Payable, Current
    Taxonomy us-gaap
    Unit USD
    Val 1,343,000
  112. Description Amount recognized for the passage of time, typically for liabilities, that have been discounted to their net present values. Excludes accretion associated with asset retirement obligations.
    Fact AccretionExpense
    Frame CY2017
    Label Accretion Expense
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 340,000
  113. Description The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.
    Fact NetIncomeLoss
    Frame CY2017
    Label Net Income (Loss) Attributable to Parent
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 22,979,000
  114. Description The amount allocated to treasury stock. Treasury stock is common and preferred shares of an entity that were issued, repurchased by the entity, and are held in its treasury.
    Fact TreasuryStockValue
    Frame CY2017Q4I
    Label Treasury Stock, Value
    Taxonomy us-gaap
    Unit USD
    Val 708,000
  115. Description Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.
    Fact OperatingLossCarryforwards
    Frame CY2017Q4I
    Label Operating Loss Carryforwards
    Taxonomy us-gaap
    Unit USD
    Val 210,300,000
  116. Description Amount of unrealized gain (loss) on investment in marketable security.
    Fact MarketableSecuritiesUnrealizedGainLoss
    Frame CY2017
    Label Marketable Securities, Unrealized Gain (Loss)
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val -28,000
  117. Description Total of the carrying values as of the balance sheet date of obligations incurred through that date and payable for obligations related to services received from employees, such as accrued salaries and bonuses, payroll taxes and fringe benefits.
    Fact EmployeeRelatedLiabilitiesCurrentAndNoncurrent
    Frame CY2017Q4I
    Label Employee-related Liabilities
    Taxonomy us-gaap
    Unit USD
    Val 1,389,000
  118. Description The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.
    Fact WeightedAverageNumberOfDilutedSharesOutstanding
    Frame CY2017
    Label Weighted Average Number of Shares Outstanding, Diluted
    Start 2017-01-01
    Taxonomy us-gaap
    Unit shares
    Val 8,969,000
  119. Description The cash inflow associated with the aggregate amount received by the entity through sale or maturity of marketable securities (held-to-maturity or available-for-sale) during the period.
    Fact ProceedsFromSaleAndMaturityOfMarketableSecurities
    Frame CY2017
    Label Proceeds from Sale and Maturity of Marketable Securities
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 33,873,000
  120. Description Amount after tax of income (loss) from continuing operations including portion attributable to the noncontrolling interest.
    Fact IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest
    Frame CY2017
    Label Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val -16,171,000
  121. Description Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from share-based compensation.
    Fact DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost
    Frame CY2017Q4I
    Label Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost
    Taxonomy us-gaap
    Unit USD
    Val 2,656,000
  122. Description The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc.
    Fact SellingGeneralAndAdministrativeExpense
    Frame CY2017
    Label Selling, General and Administrative Expense
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 11,750,000
  123. Description Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).
    Fact AccruedLiabilitiesCurrent
    Frame CY2017Q4I
    Label Accrued Liabilities, Current
    Taxonomy us-gaap
    Unit USD
    Val 7,812,000
  124. Description Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.
    Fact StockholdersEquity
    Frame CY2017Q4I
    Label Stockholders' Equity Attributable to Parent
    Taxonomy us-gaap
    Unit USD
    Val 50,507,000
  125. Description The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production.
    Fact DepreciationAndAmortization
    Frame CY2017
    Label Depreciation, Depletion and Amortization, Nonproduction
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 372,000
  126. Description Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other adjustments.
    Fact IncomeTaxReconciliationOtherAdjustments
    Frame CY2017
    Label Effective Income Tax Rate Reconciliation, Other Adjustments, Amount
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 0
  127. Description Amount of cash inflow (outflow) from operating activities, excluding discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.
    Fact NetCashProvidedByUsedInOperatingActivitiesContinuingOperations
    Frame CY2017
    Label Net Cash Provided by (Used in) Operating Activities, Continuing Operations
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val -20,238,000
  128. Description Total obligations incurred as part of normal operations that are expected to be paid during the following twelve months or within one business cycle, if longer.
    Fact LiabilitiesCurrent
    Frame CY2017Q4I
    Label Liabilities, Current
    Taxonomy us-gaap
    Unit USD
    Val 9,314,000
  129. Description The amount of net income (loss) from continuing operations per each share of common stock or unit outstanding during the reporting period.
    Fact IncomeLossFromContinuingOperationsPerBasicShare
    Frame CY2017
    Label Income (Loss) from Continuing Operations, Per Basic Share
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD/shares
    Val -1.78
  130. Description Amount of deferred state and local tax expense (benefit) pertaining to income (loss) from continuing operations.
    Fact DeferredStateAndLocalIncomeTaxExpenseBenefit
    Frame CY2017
    Label Deferred State and Local Income Tax Expense (Benefit)
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 0
  131. Description Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income (loss) and other comprehensive income (loss), attributable to noncontrolling interests. Excludes changes in equity resulting from investments by owners and distributions to owners.
    Fact ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest
    Frame CY2017
    Label Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val -751,000
  132. Description Aggregate par or stated value of issued nonredeemable common stock (or common stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable common shares, par value and other disclosure concepts are in another section within stockholders' equity.
    Fact CommonStockValue
    Frame CY2017Q4I
    Label Common Stock, Value, Issued
    Taxonomy us-gaap
    Unit USD
    Val 9,000
  133. Description Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from employee compensation.
    Fact DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation
    Frame CY2017Q4I
    Label Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Employee Compensation
    Taxonomy us-gaap
    Unit USD
    Val 682,000
  134. Description Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).
    Fact AvailableForSaleSecuritiesDebtSecurities
    Frame CY2017Q4I
    Label Debt Securities, Available-for-sale
    Taxonomy us-gaap
    Unit USD
    Val 51,885,000
  135. Description Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.
    Fact NetCashProvidedByUsedInOperatingActivities
    Frame CY2017
    Label Net Cash Provided by (Used in) Operating Activities
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val -20,876,000
  136. Description Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering.
    Fact StockIssuedDuringPeriodValueNewIssues
    Frame CY2017
    Label Stock Issued During Period, Value, New Issues
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 5,701,000
  137. Description Amount of deferred tax liability attributable to taxable temporary differences.
    Fact DeferredIncomeTaxLiabilities
    Frame CY2017Q4I
    Label Deferred Tax Liabilities, Gross
    Taxonomy us-gaap
    Unit USD
    Val 0
  138. Description Sum of the carrying values as of the balance sheet date of the portions of long-term notes payable due within one year or the operating cycle if longer.
    Fact NotesPayableCurrent
    Frame CY2017Q4I
    Label Notes Payable, Current
    Taxonomy us-gaap
    Unit USD
    Val 159,000
  139. Description Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.
    Fact AccumulatedOtherComprehensiveIncomeLossNetOfTax
    Frame CY2017Q4I
    Label Accumulated Other Comprehensive Income (Loss), Net of Tax
    Taxonomy us-gaap
    Unit USD
    Val -28,000
  140. Description Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.
    Fact CommonStockSharesOutstanding
    Frame CY2017Q4I
    Label Common Stock, Shares, Outstanding
    Taxonomy us-gaap
    Unit shares
    Val 9,483,911
  141. Description The increase (decrease) during the reporting period in current receivables (due within one year or one operating cycle) to be collected from an entity that is controlling, under the control of, or within the same control group as the reporting entity by means of direct or indirect ownership.
    Fact IncreaseDecreaseInDueFromAffiliatesCurrent
    Frame CY2017
    Label Increase (Decrease) in Due from Affiliates, Current
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 1,682,000
  142. Description Amount before allocation of valuation allowances of deferred tax asset attributable to deductible charitable contribution carryforwards.
    Fact DeferredTaxAssetsCharitableContributionCarryforwards
    Frame CY2017Q4I
    Label Deferred Tax Assets, Charitable Contribution Carryforwards
    Taxonomy us-gaap
    Unit USD
    Val 11,000
  143. Description Amount after tax of income (loss) from a discontinued operation attributable to the noncontrolling interest. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal.
    Fact IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest
    Frame CY2017
    Label Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Noncontrolling Interest
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val -569,000
  144. Description The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.
    Fact DepreciationDepletionAndAmortization
    Frame CY2017
    Label Depreciation, Depletion and Amortization
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 400,000
  145. Description Sum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold, or consumed within one year (or the normal operating cycle, if longer). Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.
    Fact AssetsCurrent
    Frame CY2017Q4I
    Label Assets, Current
    Taxonomy us-gaap
    Unit USD
    Val 61,397,000
  146. Description The cash outflow for a borrowing supported by a written promise to pay an obligation.
    Fact RepaymentsOfNotesPayable
    Frame CY2017
    Label Repayments of Notes Payable
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 965,000
  147. Description Amount of current state and local tax expense (benefit) pertaining to income (loss) from continuing operations.
    Fact CurrentStateAndLocalTaxExpenseBenefit
    Frame CY2017
    Label Current State and Local Tax Expense (Benefit)
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val -1,641,000
  148. Description The maximum number of common shares permitted to be issued by an entity's charter and bylaws.
    Fact CommonStockSharesAuthorized
    Frame CY2017Q4I
    Label Common Stock, Shares Authorized
    Taxonomy us-gaap
    Unit shares
    Val 500,000,000
  149. Description The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business).
    Fact NonoperatingIncomeExpense
    Frame CY2017
    Label Nonoperating Income (Expense)
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val -105,000
  150. Description Amount of increase (decrease) in operating assets classified as other.
    Fact IncreaseDecreaseInOtherOperatingAssets
    Frame CY2017
    Label Increase (Decrease) in Other Operating Assets
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val -148,000
  151. Description Amount of cash inflow from exercise of option under share-based payment arrangement.
    Fact ProceedsFromStockOptionsExercised
    Frame CY2017
    Label Proceeds from Stock Options Exercised
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 13,000

Facts up to 2017-09-30

  1. Description An excess of the fair value of the modified award over the fair value of the award immediately before the modification.
    Fact ShareBasedCompensationArrangementByShareBasedPaymentAwardPlanModificationIncrementalCompensationCost
    Frame CY2017Q3
    Label Share-based Payment Arrangement, Plan Modification, Incremental Cost
    Start 2017-07-01
    Taxonomy us-gaap
    Unit USD
    Val 300,000
  2. Description Amount of additional cost recognized for award under share-based payment arrangement from occurrence of event accelerating recognition of cost.
    Fact ShareBasedCompensationArrangementByShareBasedPaymentAwardAcceleratedCompensationCost
    Label Share-based Payment Arrangement, Accelerated Cost
    Start 2017-01-01
    Taxonomy us-gaap
    Unit USD
    Val 1,900,000

Facts up to 2017-02-28

Description Carrying amount as of the balance sheet date of amounts due under the terms of governmental, corporate, or foundation grants.
Fact GrantsReceivable
Label Grants Receivable
Taxonomy us-gaap
Unit USD
Val 12,200,000

Facts up to 2016-12-31

  1. Description Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage. Excludes amount for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.
    Fact CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
    Frame CY2016Q4I
    Label Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents
    Taxonomy us-gaap
    Unit USD
    Val 7,077,000
  2. Description Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; attributable to disposal group, including, but not limited to, discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.
    Fact CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsDisposalGroupIncludingDiscontinuedOperations
    Frame CY2016Q4I
    Label Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Disposal Group, Including Discontinued Operations
    Taxonomy us-gaap
    Unit USD
    Val 7,628,000
  3. Description Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity.
    Fact StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
    Frame CY2016Q4I
    Label Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest
    Taxonomy us-gaap
    Unit USD
    Val 4,066,000

Facts up to 2016-03-11

Description The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.
Fact EquityMethodInvestmentOwnershipPercentage
Frame CY2016Q1I
Label Equity Method Investment, Ownership Percentage
Taxonomy us-gaap
Unit pure
Val 0.20
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