Note 6 - Leases - Components of Lease Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Operating lease costs	$ 897	$ 913
Short-term lease costs	402	565
Total operating lease costs	1,299	1,478
Variable lease costs	259	305
Total lease costs	$ 1,558	$ 1,783