Note 4 - Fair Value Measurements (Details Textual) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended |
|---|---|---|
Jun. 30, 2022 |
Jun. 30, 2022 |
|
| Fair Value, Asset (Liability), Recurring Basis, Still Held, Unrealized Gain (Loss) | $ 0 | $ 0 |
| X | ||||||||||
- Definition Amount of unrealized gain (loss) recognized in income from asset (liability) measured at fair value on recurring basis using unobservable input (level 3) and still held. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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