Note 7 - Accrued Liabilities - Accrued Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Accrued payroll and benefits	$ 3,524	$ 3,110
Accrued property taxes	209	17
Income taxes payable	54	26
Accrued professional fees	197	118
Accrued warranty liability	164	149
Self-insured workers compensation reserve	35	30
Long term incentive plan accrual	619	619
Accrued other	358	244
Total accrued liabilities	$ 5,160	$ 4,313