Income Taxes (Narrative) (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|---|
Jun. 30, 2017 |
Jun. 30, 2016 |
Jun. 30, 2017 |
Jun. 30, 2016 |
Dec. 31, 2016 |
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| Income Taxes [Abstract] | |||||
| Discrete charge for an uncertain tax position | $ 8 | $ 433 | $ 20 | $ 433 | |
| Discrete charge associated with disproportionate tax effect | 102 | $ 235 | |||
| Payments on tax audit liability | $ 939 | ||||
| Foreign statutory tax rate, foreign operations | 25.00% | 25.00% | |||
| Gross deferred tax asset | $ 75,416 | ||||
| Valuation allowance | 67,662 | ||||
| Net deferred tax asset | 7,754 | ||||
| Deferred tax liabilities, gross | 16,720 | ||||
| Net operating loss carryforwards for U.S. federal income tax purposes | 172,419 | ||||
| Tax windfall | 270 | ||||
| Research and experimentation credit carryforwards | 3,407 | ||||
| Alternative minimum tax credit carryforwards | $ 315 | ||||
| AMT percentage | 20.00% | ||||
| Maximum percentage of income offset by available NOLs | 90.00% | ||||
| Net operating loss carryforwards, net of limitations | $ 172,149 | ||||
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- Definition Alternative minimum tax percentage No definition available.
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- Definition Foreign Operations Permanently Reinvested Statutiry Income Tax Rate No definition available.
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- Definition Maximum Of Income Offset By Available Net Operating Loss, Percentage No definition available.
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- Definition Net operating loss carryforwards, net of IRS code limitations. No definition available.
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- Definition Operating Loss Carryforwards Windfall Tax Limitation No definition available.
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- Definition Payments on Tax Audit Liability No definition available.
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- Definition Unusual Tax Provision, Disproportionate Tax Effect 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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- References No definition available.
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- Definition Amount of increase (decrease) to previously recorded tax expense. Includes, but is not limited to, significant settlements of income tax disputes, and unusual tax positions or infrequent actions taken by the entity, including tax assessment reversal, and IRS tax settlement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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