Note 14 - Employee Benefits - ESOP Share Allocation (Details) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Shares held by participants beginning of the year (in shares)	361,069	353,677
Shares allocated to participants (in shares)	24,318	24,318
Shares purchased with dividends received on allocated shares (in shares)	7,005	3,540
Shares distributed to participants (in shares)	(19,849)	(20,466)
Shares held by participants end of year (in shares)	372,543	361,069
Unreleased shares beginning of the year (in shares)	133,782	158,100
Shares released during year (in shares)	(24,318)	(24,318)
Unreleased shares end of year (in shares)	109,464	133,782
Total ESOP shares end of year (in shares)	482,007	494,851
Fair value of unreleased shares at December 31	$ 2,517,672	$ 2,854,908