Note 2 - Securities (Details Textual) $ in Thousands		3 Months Ended
		Sep. 30, 2025 USD ($)	Sep. 30, 2024 USD ($)	Jun. 30, 2025 USD ($)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax	[1],[2]	$ 1
Debt Securities, Available-for-Sale, Restricted		$ 161,209		$ 164,473
Available-for-sale, Qualitative Disclosure, Number of Positions		428
Available-for-sale, Qualitative Disclosure, Number of Positions		348
Held-to-maturity, Qualitative Disclosure, Number of Positions		3
Equity Securities, FV-NI, Cost		$ 400
Equity Securities, FV-NI				$ 392
Equity Securities, FV-NI, Unrealized Gain (Loss)		0	$ 0
Equity Securities, FV-NI, Realized Gain (Loss)		$ 0	$ 0
US States and Political Subdivisions Debt Securities [Member] | Rated [Member]
Percent of Available for Sale Debt Securities Portfolio		97.40%
US States and Political Subdivisions Debt Securities [Member] | Non-rated [Member]
Percent of Available for Sale Debt Securities Portfolio		2.60%
Maximum [Member]
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax		$ (1)

[1] Income tax expense

[2] Securities gains, net