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Note 8 - Accounts Payable and Accrued Liabilities - Summary of Accrued Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Patent and legal costs $ 135 $ 28
Accrued compensation 1,100 628
Warranty costs 125 96
Taxes and other 103 72
Accrued Liabilities, Current, Total $ 1,463 $ 824