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Note 7 - Accounts Payable and Accrued Liabilities - Summary of Accrued Liabilities (Details) - USD ($)
$ in Thousands
Sep. 30, 2022
Dec. 31, 2021
Patent and legal costs $ 131 $ 28
Accrued compensation 759 628
Warranty costs 88 96
Taxes and other 13 72
Accrued Liabilities, Current, Total $ 991 $ 824