Income Taxes (Narrative) (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
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| Income Tax Disclosure [Line Items] | |||
| Statutory income tax (benefit) expense | 21.00% | 21.00% | (34.00%) |
| Net change in valuation allowance | $ (13,490) | $ (3,689) | $ (21,851) |
| 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 | $ 131,621 | ||
| Research and experimentation credit carryforwards | 4,250 | ||
| Unrecognized tax benefits that would impact effective tax rate | 561 | 545 | |
| Unrecognized tax benefits that reduce deferred tax assets | 462 | 384 | |
| Interest and penalty expense recognized | 0 | 0 | $ 13 |
| Total accrued interest and penalties | $ 4 | $ 9 | |
| Minimum [Member] | |||
| Income Tax Disclosure [Line Items] | |||
| Foreign statutory tax rate, foreign operations | 25.00% | ||
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- Definition Deferred Tax Assets, Valuation Allowance, Net Change In Amount No definition available.
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- Definition Foreign Operations Permanently Reinvested Statutiry Income Tax Rate No definition available.
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- Definition Income Tax Disclosure [Line Items] 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 Unrecognized Tax Benefits that Reduce Deferred Tax Assets No definition available.
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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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://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Percentage of domestic federal statutory tax rate applicable to pretax income (loss). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of expense for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Details
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