Note 15 - Income Taxes (Details Textual) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2021 |
Dec. 31, 2020 |
|
| Operating Loss Carryforward Subject to Expiration | $ 703 | |
| Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent | 21.00% | |
| Domestic Tax Authority [Member] | ||
| Operating Loss Carryforwards, Total | $ 52,004 | |
| Operating Loss Carryforwards, Tax Deductions From Stock Options Exercises and RSU Vesting | 3,168 | $ 720 |
| State and Local Jurisdiction [Member] | ||
| Operating Loss Carryforwards, Tax Deductions From Stock Options Exercises and RSU Vesting | $ 3,168 | $ 720 |