Note 9 - Accrued Liabilities - Accrued Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Accrued payroll and benefits	$ 5,051	$ 3,110
Accrued property taxes	0	17
Income taxes payable	254	26
Accrued professional fees	140	118
Accrued warranty liability	322	149	$ 125
Self-insured workers compensation reserve	21	30
Long term incentive plan accrual	0	619
Accrued sales tax	310	5
Accrued other	379	239
Total accrued liabilities	$ 6,477	$ 4,313