Available for Sale Securities - Amortized cost, gross unrealized gains, gross unrealized losses, ACL, and approximate fair value of securities available for sale (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Jun. 30, 2025
Debt Securities, Available-for-Sale [Line Items]
Total AFS securities, Amortized Cost	$ 464,548	$ 475,395
Gross Unrealized Gains	4,093	3,128
Gross Unrealized Losses	(14,786)	(17,679)
Allowance for Credit Losses	0	0
Estimated Fair Value	453,855	460,844
Obligations of states and political subdivisions
Debt Securities, Available-for-Sale [Line Items]
Total AFS securities, Amortized Cost	25,998	26,030
Gross Unrealized Gains	49	5
Gross Unrealized Losses	(1,163)	(1,772)
Allowance for Credit Losses	0	0
Estimated Fair Value	24,884	24,263
Corporate obligations
Debt Securities, Available-for-Sale [Line Items]
Total AFS securities, Amortized Cost	29,734	31,199
Gross Unrealized Gains	52	75
Gross Unrealized Losses	(421)	(632)
Allowance for Credit Losses	0	0
Estimated Fair Value	29,365	30,642
Asset backed securities
Debt Securities, Available-for-Sale [Line Items]
Total AFS securities, Amortized Cost	38,365	42,059
Gross Unrealized Gains	540	567
Gross Unrealized Losses	(144)	(145)
Allowance for Credit Losses	0	0
Estimated Fair Value	38,761	42,481
Other securities
Debt Securities, Available-for-Sale [Line Items]
Total AFS securities, Amortized Cost	3,739	4,007
Gross Unrealized Gains	10	10
Gross Unrealized Losses	(54)	(53)
Allowance for Credit Losses	0	0
Estimated Fair Value	3,695	3,964
Debt securities
Debt Securities, Available-for-Sale [Line Items]
Total AFS securities, Amortized Cost	97,836	103,295
Gross Unrealized Gains	651	657
Gross Unrealized Losses	(1,782)	(2,602)
Allowance for Credit Losses	0	0
Estimated Fair Value	96,705	101,350
Residential MBS issued by governmental sponsored enterprises (GSEs)
Debt Securities, Available-for-Sale [Line Items]
Total AFS securities, Amortized Cost	139,440	138,377
Gross Unrealized Gains	2,181	1,623
Gross Unrealized Losses	(4,225)	(5,005)
Allowance for Credit Losses	0	0
Estimated Fair Value	137,396	134,995
Commercial MBS issued by GSEs
Debt Securities, Available-for-Sale [Line Items]
Total AFS securities, Amortized Cost	95,348	96,377
Gross Unrealized Gains	660	446
Gross Unrealized Losses	(4,258)	(4,821)
Allowance for Credit Losses	0	0
Estimated Fair Value	91,750	92,002
CMOs issued by GSEs
Debt Securities, Available-for-Sale [Line Items]
Total AFS securities, Amortized Cost	131,924	137,346
Gross Unrealized Gains	601	402
Gross Unrealized Losses	(4,521)	(5,251)
Allowance for Credit Losses	0	0
Estimated Fair Value	128,004	132,497
MBS and CMOs
Debt Securities, Available-for-Sale [Line Items]
Total AFS securities, Amortized Cost	366,712	372,100
Gross Unrealized Gains	3,442	2,471
Gross Unrealized Losses	(13,004)	(15,077)
Allowance for Credit Losses	0	0
Estimated Fair Value	$ 357,150	$ 359,494

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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Amount, before tax, of unrealized loss 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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