Note 6 - Leases (Details Textual) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Lessee, Operating Lease, Remaining Lease Term (Year)	15 years		15 years
Operating Lease, Right-of-Use Asset	$ 24,500		$ 24,500		$ 26,500
Operating Lease, Liability	$ 26,514		$ 26,514		$ 27,400
Operating Lease, Weighted Average Remaining Lease Term (Year)	7 years 10 months 24 days		7 years 10 months 24 days
Operating Lease, Weighted Average Discount Rate, Percent	3.74%		3.74%
Operating Lease, Payments	$ 1,400	$ 1,300	$ 2,800	$ 2,500