Note 2 - Securities (Details Textual) $ in Thousands		3 Months Ended		6 Months Ended
		Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Jun. 30, 2024 USD ($)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax	[1],[2]				$ (16)
Debt Securities, Available-for-Sale, Restricted		$ 157,695		$ 157,695		$ 153,908
Available-for-sale, Qualitative Disclosure, Number of Positions		418		418
Available-for-sale, Qualitative Disclosure, Number of Positions		385		385
Held-to-maturity, Qualitative Disclosure, Number of Positions		3		3
Equity Securities, FV-NI, Cost		$ 400		$ 400		400
Equity Securities, FV-NI		381		381		$ 381
Equity Securities, FV-NI, Unrealized Gain (Loss)		0	$ 0	0	0
Equity Securities, FV-NI, Realized Gain (Loss)		$ 0	$ 0	$ 0	0
US States and Political Subdivisions Debt Securities [Member] | Rated [Member]
Percent of Available for Sale Debt Securities Portfolio		97.30%		97.30%
US States and Political Subdivisions Debt Securities [Member] | Non-rated [Member]
Percent of Available for Sale Debt Securities Portfolio		2.70%		2.70%
Maximum [Member]
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax					$ (16)

[1] Income tax expense

[2] Securities (gains) losses, net