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		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Collateral dependent loans	$ 8,234		$ 8,234		$ 13,561
Collateral dependent loans, gain (loss)	58	$ 0
Other real estate owned	10		10		10
Other real estate owned, gain (loss)	0	$ 0
Fair Value, Inputs, Level 1 [Member]
Collateral dependent loans	0		0		0
Collateral dependent loans, gain (loss)			58	$ 0
Other real estate owned	0		0		0
Other real estate owned, gain (loss)			0	$ 0
Fair Value, Inputs, Level 2 [Member]
Collateral dependent loans	0		0		0
Other real estate owned	0		0		0
Fair Value, Inputs, Level 3 [Member]
Collateral dependent loans	8,234		8,234		13,561
Other real estate owned	$ 10		$ 10		$ 10