Note 7 - Leases - Operating Lease Expenses (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Operating lease cost	$ 1,554	$ 1,202	$ 4,617	$ 2,652
Short-term lease cost	10	117	41	335
Variable lease cost	459	397	1,401	926
Total lease cost	$ 2,023	$ 1,716	$ 6,059	$ 3,913