Note 14 - Accrued Liabilities - Components of Other Accrued Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Contract liabilities (Note 2)	$ 1,279	$ 372	$ 390
Warranty reserve (Note 9)	159	159
Deferred revenue	103	75
Accrued professional fees	101	0
Other accrued liabilities	292	220
Total other accrued liabilities	$ 1,934	$ 826