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Note 7 - Accounts Payable and Accrued Liabilities - Summary of Accrued Liabilities (Details) - USD ($)
$ in Thousands
Mar. 31, 2023
Dec. 31, 2022
Patent and legal costs $ 129 $ 135
Accrued compensation 1,352 1,100
Warranty costs 91 125
Taxes and other 164 103
Accrued Liabilities, Current $ 1,736 $ 1,463