Note 12 - Accrued Liabilities - Components of Other Accrued Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Contract liabilities (Note 3)	$ 427	$ 372	$ 390
Warranty reserve (Note 13)	159	159
Other accrued liabilities	241	295
Total other accrued liabilities	$ 827	$ 826