Note 8 - Leases - Lease Costs (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Operating lease cost	$ 403	$ 317	$ 803	$ 643
Short-term lease cost	$ 4	$ 14	$ 7	$ 44
Weighted average remaining lease term (in years) (Year)	4 years 8 months 12 days		4 years 8 months 12 days
Weighted average discount rate	4.50%		4.50%
Minimum [Member]
Range of remaining lease terms (in years) (Year)			1 month 6 days
Maximum [Member]
Range of remaining lease terms (in years) (Year)			7 years 9 months 18 days