Note 12 - Income Taxes (Details Textual) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
|
| Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent | 21.00% | 21.00% | 21.00% |
| Income Taxes Receivable, Current | $ 0 | $ 1,861 | |
| Proceeds from Income Tax Refunds | 2,007 | 51,833 | $ 11,126 |
| Interest Income Related to Income Tax Refunds | 4,500 | ||
| Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount | (32,100) | (63,300) | |
| Income Tax Benefit Cares Act | 32,100 | ||
| Deferred Tax Assets, Valuation Allowance, Total | $ 22,361 | $ 54,436 | |
| Open Tax Year | 2017 2018 2019 2020 | ||
| X | ||||||||||
- 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/disclosureRef
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| X | ||||||||||
- Definition Percentage of domestic federal statutory tax rate applicable to pretax income (loss). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Carrying amount due within one year of the balance sheet date (or one operating cycle, if longer) from tax authorities as of the balance sheet date representing refunds of overpayments or recoveries based on agreed-upon resolutions of disputes. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Tax year that remains open to examination under enacted tax laws, in CCYY format. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition The amount of cash received during the period as refunds for the overpayment of taxes. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount of increase (decrease) in the valuation allowance for a specified deferred tax asset. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of income tax benefit related to the CARES Act. No definition available.
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| X | ||||||||||
- Definition The amount of interest income recorded during period related to income tax refunds. No definition available.
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