Note 6 - Leases - Supplemental Balance Sheet Information (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Operating lease assets	$ 7,850	$ 8,983
Total leased assets	9,213	11,035
Current operating lease liabilities	1,155	1,043
Current finance lease liabilities	390	601
Long-term operating lease liabilities	7,549	8,695
Long term finance lease liabilities	565	916
Total lease liabilities	9,659	11,255
Property and Equipment [Member]
Finance lease assets	$ 1,363	$ 2,052