Note 6 - Operating Leases (Details Textual) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2022	Dec. 31, 2021
Operating Lease, Right-of-Use Asset	$ 3,142	$ 3,142	$ 3,552
Operating Lease, Liability, Total	$ 3,431	$ 3,431
Operating Lease, Weighted Average Discount Rate, Percent	3.80%	3.80%
Operating Lease, Weighted Average Remaining Lease Term (Year)	3 years 10 months 24 days	3 years 10 months 24 days
Operating Lease, Expense	$ 232	$ 501