Note 2 - Summary of Significant Accounting Policies - Warrant Accrual Activity (Details) - USD ($) $ in Thousands |
12 Months Ended | |
---|---|---|
Dec. 31, 2022 |
Dec. 31, 2021 |
|
Beginning balance | $ 80 | $ 0 |
Add: Accruals for warranties issued during the period | 42 | 80 |
Less: Adjustment for inventory at cost and excessive and obsolete inventory | (72) | 0 |
Ending balance | $ 50 | $ 80 |