Note 3 - Loans and Allowance for Credit Losses - Major Classifications (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Jun. 30, 2024	Sep. 30, 2023	Jun. 30, 2023
Gross loans	$ 766,403	$ 759,030
Unamortized deferred loan costs, net	70	84
Less allowance for credit losses	(7,948)	(7,930)	$ (7,782)	$ (7,724)
Net loans	758,525	751,184
Commercial Portfolio Segment [Member]
Gross loans	125,100	127,782
Commercial Real Estate Portfolio Segment [Member]
Less allowance for credit losses	(3,678)	(3,650)	(3,951)	(3,943)
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied Loans [Member]
Gross loans	166,027	163,856
Commercial Real Estate Portfolio Segment [Member] | Non-owner Occupied Loans [Member]
Gross loans	151,219	146,827
Farmland [Member]
Gross loans	38,481	38,898
Less allowance for credit losses	(87)	(89)	(91)	0
Land Development [Member]
Gross loans	13,377	12,654
Less allowance for credit losses	(183)	(174)	(266)	0
Residential Portfolio Segment [Member]
Gross loans	196,098	196,098
Less allowance for credit losses	(2,018)	(2,018)	(1,638)	(1,571)
Consumer Portfolio Segment [Member]
Gross loans	76,101	72,915
Less allowance for credit losses	$ (894)	$ (855)	$ (862)	$ (902)