Note 10 - Leases - Supplemental Cash Flow and Other Information Related to Leases (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Operating cash flows from operating leases	$ 684	$ 563	$ 680
Operating cash flows from finance leases	4	18	34
Financing cash flows from finance leases	290	469	493
ROU assets obtained in exchange for operating lease liabilities	1,971	83	560
ROU assets obtained in exchange for finance lease liabilities	$ 0	$ 0	$ 40