Note 4 - Accumulated Other Comprehensive Income (Loss) - Changes in Accumulated Other Comprehensive Income (Loss) by Component, Net of Tax (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2025	Mar. 31, 2024
Balance		$ 210,562	$ 205,681
Other comprehensive loss		(367)	(2,040)
Balance		213,793	205,575
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member]
Balance		(20,073)	(16,090)
Other comprehensive loss	[1]	(367)	(2,040)
Balance		$ (20,440)	$ (18,130)

[1] All amounts are net of tax.