Note 8 - Income Taxes - Changes in Valuation Allowance (Details) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2019 |
Dec. 31, 2018 |
|
| Valuation allowance at the Beginning of Period | $ (11,370) | $ (11,435) |
| Income tax expense | ||
| Release of valuation allowance | 120 | 65 |
| Valuation allowance at the End of Period | $ (11,250) | $ (11,370) |
| X | ||||||||||
- Definition Amount of increase in the valuation allowance for deferred tax assets charged to income tax expense. No definition available.
|
| X | ||||||||||
- Definition Amount of decrease in the valuation allowance for deferred tax assets due to the release of valuation allowance. No definition available.
|
| 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://fasb.org/us-gaap/role/ref/legacyRef
|