Note 10 - Leases - Supplemental Cash Flow and Other Information Related to Leases (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Operating cash flows from operating leases	$ 563	$ 680	$ 596
Operating cash flows from finance leases	18	34	36
Financing cash flows from finance leases	469	493	332
ROU assets obtained in exchange for operating lease liabilities	83	560	276
ROU assets obtained in exchange for finance lease liabilities	$ 0	$ 40	$ 817