Note 3 - Loans and Allowance for Credit Losses - Major Classifications (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Jun. 30, 2023
Gross loans	$ 767,920		$ 759,030
Unamortized deferred loan fees and costs, net	(91)		84
Less allowance for credit losses	(8,047)	$ (7,844)	(7,930)	$ (7,911)	$ (7,987)	$ (7,724)
Net loans	759,782		751,184
Commercial Portfolio Segment [Member]
Gross loans	98,918		127,782
Commercial Real Estate Portfolio Segment [Member]
Less allowance for credit losses	(3,308)	(3,478)	(3,650)	(3,750)	(4,131)	(3,943)
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied Loans [Member]
Gross loans	159,116		163,856
Commercial Real Estate Portfolio Segment [Member] | Non-owner Occupied Loans [Member]
Gross loans	159,204		146,827
Farmland [Member]
Gross loans	41,158		38,898
Less allowance for credit losses	(105)	(93)	(89)	(90)	(89)	0
Land Development [Member]
Gross loans	12,752		12,654
Less allowance for credit losses	(198)	(178)	(174)	(168)	(246)	0
Residential Portfolio Segment [Member]
Gross loans	199,215		196,098
Less allowance for credit losses	(1,994)	(2,086)	(2,018)	(1,973)	(1,696)	(1,571)
Consumer Portfolio Segment [Member]
Gross loans	97,557		72,915
Less allowance for credit losses	$ (1,193)	$ (933)	$ (855)	$ (853)	$ (870)	$ (902)