Note 13 - Assets and Liabilities Measured and Reported at Fair Value - Assets Measured at Fair Value on a Non-recurring Basis (Details) - Fair Value, Nonrecurring [Member] - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Collateral dependent loans	$ 8,191		$ 12,227
Collateral dependent loans, gain (loss)	10	$ 4
Other real estate owned	85
Other real estate owned, gain (loss)	0
Fair Value, Inputs, Level 1 [Member]
Collateral dependent loans	0		0
Other real estate owned	0
Fair Value, Inputs, Level 2 [Member]
Collateral dependent loans	0		0
Other real estate owned	0
Fair Value, Inputs, Level 3 [Member]
Collateral dependent loans	8,191		$ 12,227
Other real estate owned	$ 85