Income Taxes (Narrative) (Details) - USD ($) |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2021 |
Dec. 31, 2020 |
Dec. 31, 2019 |
|
| Operating Loss Carryforwards [Line Items] | |||
| Net operating loss carryforwards | $ 87,500,000 | ||
| Net operating loss carryforwards, not subject to expiration | 68,400,000 | ||
| Net operating loss carryforwards, subject to expiration | 19,100,000 | ||
| Deferred tax assets, net operating loss carryforwards | 22,767,000 | $ 24,253,000 | |
| Deferred tax assets, valuation allowance | 20,200,000 | 21,200,000 | |
| Change in unrecognized tax benefit reasonably possible, low range | 0 | ||
| Change in unrecognized tax benefit reasonably possible, high range | 6,500,000 | ||
| Unrecognized tax benefits that would affect the effective tax rate | 12,900,000 | 13,600,000 | $ 11,500,000 |
| Interest expense and penalties recognized (reversed) | 300,000 | 800,000 | $ 500,000 |
| Income Tax Examination, Penalties and Interest Accrued | $ 2,600,000 | $ 2,300,000 | |
| X | ||||||||||
- Definition The high range amount of change reasonably possible in the next twelve for the unrecognized tax benefit. No definition available.
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| X | ||||||||||
- Definition The low range amount of change reasonably possible in the next twelve for the unrecognized tax benefit. No definition available.
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| X | ||||||||||
- 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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| X | ||||||||||
- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards that are not subject to expiration dates. No definition available.
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| X | ||||||||||
- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards that are subject to expiration dates. No definition available.
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| X | ||||||||||
- Definition The amount of estimated penalties and interest accrued as of the balance sheet date arising from income tax examinations. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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| X | ||||||||||
- Definition The portion of the valuation allowance pertaining to the deferred tax asset representing potential future taxable deductions from net operating loss carryforwards for which it is more likely than not that a tax benefit will not be realized. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- 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://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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