Note 5 - Leases - Supplemental Balance Sheet Information (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Operating lease assets	$ 6,917	$ 7,850
Total leased assets	7,553	9,213
Current operating lease liabilities	1,033	1,155
Current finance lease liabilities	356	390
Long-term operating lease liabilities	6,763	7,549
Long term finance lease liabilities	209	565
Total lease liabilities	8,361	9,659
Property and Equipment [Member]
Finance lease assets	$ 636	$ 1,363