Income Taxes (Narrative) (Details) - USD ($) $ in Thousands |
3 Months Ended | 12 Months Ended | |
|---|---|---|---|
Mar. 31, 2018 |
Mar. 31, 2017 |
Dec. 31, 2017 |
|
| Income Taxes [Abstract] | |||
| Statutory income tax benefit | 21.00% | 35.00% | |
| Tax Cuts and Jobs Act of 2017, Transition Tax, Tax Benefit, If Recognized | $ 2,500 | ||
| Tax Cuts and Jobs Act of 2017, Valuation Allowance, Federal | 4,512 | ||
| Tax Cuts and Jobs Act of 2017, Valuation Allowance, State, If Recognized | 400 | ||
| Foreign statutory tax rate, foreign operations | 25.00% | ||
| Gross deferred tax asset | 50,732 | ||
| Valuation allowance | 45,811 | ||
| Net deferred tax asset | 4,921 | ||
| Deferred tax liabilities, gross | 8,587 | ||
| Discrete benefit (charge) associated with tax effect | $ 28 | $ (133) | |
| Tax Cuts and Jobs Act of 2017, Percentage of Deferred Tax Asset Which Can be Used for Offset | 80.00% | ||
| Net operating loss carryforwards for U.S. federal income tax purposes | 156,598 | ||
| Research and experimentation credit carryforwards | 3,452 | ||
| Alternative minimum tax credit carryforwards | $ 0 | ||
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- Definition Amount of increase (decrease) in accumulated other comprehensive income. No definition available.
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- Definition Foreign Operations Permanently Reinvested Statutiry Income Tax Rate No definition available.
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- Definition Tax Cuts and Jobs Act of 2017, Percentage of Deferred Tax Asset Which Can be Used for Offset No definition available.
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- Definition Tax Cuts and Jobs Act of 2017, Transition Tax, Tax Benefit, If Recognized No definition available.
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- Definition Tax Cuts and Jobs Act of 2017, Valuation Allowance, Federal No definition available.
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- Definition Tax Cuts and Jobs Act of 2017, Valuation Allowance, State, If Recognized No definition available.
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- Definition Amount of deferred tax liability attributable to taxable temporary differences. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible alternative minimum tax credit carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible research tax credit carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Percentage of domestic federal statutory tax rate applicable to pretax income (loss). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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