Note 9 - Accrued Expenses and Other Current Liabilities - Schedule of Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Accrued fines and penalties	$ 522	$ 522
Insurance	264	467
Other payable	165	297
Taxes payable	160	142
Board of director fees payable	0	250
Accrued Liabilities and Other Liabilities, Current	4,079	5,084
Contracts With Customers [Member]
Unearned revenue from contracts	2,805	3,243
Customer Deposits [Member]
Unearned revenue from contracts	$ 163	$ 163