Note 9 - Income Taxes (Details Textual) - USD ($) $ in Thousands |
12 Months Ended | |
---|---|---|
Dec. 31, 2020 |
Dec. 31, 2019 |
|
Federal Income Tax Expense (Benefit), Continuing Operations, Total | $ 0 | $ 0 |
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent | 21.00% | 21.00% |
Deferred Tax Assets, Operating Loss Carryforwards, Total | $ 362,000 | |
Deferred Tax Assets, Operating Loss Carryforwards, Not Subject to Expiration | 37,000 | |
State and Local Income Tax Expense (Benefit), Continuing Operations, Total | $ 0 | $ 0 |
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 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 Amount of current and deferred federal income tax expense (benefit) attributable to income (loss) from continuing operations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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X | ||||||||||
- Definition Amount of state and local current and deferred income tax expense (benefit) attributable to continuing operations. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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