Note 16 - Income Taxes (Details Textual) $ in Millions |
12 Months Ended |
|---|---|
|
Dec. 31, 2020
USD ($)
| |
| Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount | $ 4.0 |
| Unrecognized Tax Benefits, Ending Balance | 0.2 |
| Domestic Tax Authority [Member] | Internal Revenue Service (IRS) [Member] | |
| Operating Loss Carryforwards, Total | 118.2 |
| Tax Credit Carryforward, Amount | 0.2 |
| State and Local Jurisdiction [Member] | California Franchise Tax Board [Member] | |
| Operating Loss Carryforwards, Total | 4.3 |
| Tax Credit Carryforward, Amount | $ 0.5 |
| 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 The amount of the tax credit 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 Amount of unrecognized tax benefits. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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 | ||||||||||
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