Note 7 - Leases - Lease Cost (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Operating lease cost	$ 510	$ 334
Short-term lease cost	0	0
Total lease cost	510	334
Operating cash outflows from operating leases	$ 510	$ 334
Weighted-average remaining lease term (Year)	3 years 8 months 23 days	4 years 3 months 14 days
Weighted-average discount rate	4.00%	4.00%