Note 2 - Securities - Amortized Cost and Fair Value of Securities Available-for-sale and Securities Held-to-maturity (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024	Jun. 30, 2024
Available-for-sale securities, amortized cost	$ 304,224		$ 300,666
Held-to-maturity, amortized cost	5,504		6,054
Available-for-sale securities, gross unrealized gains	563		142
Available-for-sale securities, gross unrealized losses	(30,531)		(36,006)
Available-for-sale securities, fair value	274,256		264,802
Held-to-maturity, fair value	5,270	$ 5,270	5,530
US Treasury Securities [Member]
Available-for-sale securities, amortized cost	2,986		6,471
Available-for-sale securities, gross unrealized gains	0		0
Available-for-sale securities, gross unrealized losses	(76)		(219)
Available-for-sale securities, fair value	2,910		6,252
US States and Political Subdivisions Debt Securities [Member]
Available-for-sale securities, amortized cost	80,639		85,917
Held-to-maturity, amortized cost	5,504		6,054
Available-for-sale securities, gross unrealized gains	7		46
Held-to-maturity, gross unrecognized gains	0		0
Available-for-sale securities, gross unrealized losses	(8,485)		(8,233)
Held-to-maturity, gross unrecognized losses	(234)		(524)
Available-for-sale securities, fair value	72,161		77,730
Held-to-maturity, fair value	5,270		5,530
US Government-sponsored Enterprises Debt Securities [Member]
Available-for-sale securities, amortized cost	26,257		28,019
Available-for-sale securities, gross unrealized gains	34		4
Available-for-sale securities, gross unrealized losses	(2,657)		(3,356)
Available-for-sale securities, fair value	23,634		24,667
Residential Mortgage-Backed Securities [Member]
Available-for-sale securities, amortized cost	94,390		94,303
Available-for-sale securities, gross unrealized gains	66		0
Available-for-sale securities, gross unrealized losses	(12,368)		(14,936)
Available-for-sale securities, fair value	82,088		79,367
Commercial Mortgage-Backed Securities [Member]
Available-for-sale securities, amortized cost	8,572		8,584
Available-for-sale securities, gross unrealized gains	0		0
Available-for-sale securities, gross unrealized losses	(1,531)		(1,752)
Available-for-sale securities, fair value	7,041		6,832
Collateralized Mortgage Obligations [Member]
Available-for-sale securities, amortized cost	71,760		60,333
Available-for-sale securities, gross unrealized gains	429		92
Available-for-sale securities, gross unrealized losses	(4,741)		(5,757)
Available-for-sale securities, fair value	67,448		54,668
Other Debt Obligations [Member]
Available-for-sale securities, amortized cost	19,620		17,039
Available-for-sale securities, gross unrealized gains	27		0
Available-for-sale securities, gross unrealized losses	(673)		(1,753)
Available-for-sale securities, fair value	$ 18,974		$ 15,286

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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