Note 7 - Leases - Operating Lease Expenses (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Operating lease cost	$ 1,554	$ 1,554	$ 4,661	$ 4,617
Short-term lease cost	10	10	29	41
Variable lease cost	496	459	1,381	1,401
Sublease income	(20)	0	(54)	0
Total lease cost	$ 2,040	$ 2,023	$ 6,017	$ 6,059