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	Mar. 31, 2026	Jun. 30, 2025
Debt Securities, Available-for-Sale [Line Items]
Total AFS securities, Amortized Cost	$ 450,707	$ 475,395
Gross Unrealized Gains	3,165	3,128
Gross Unrealized Losses	(14,757)	(17,679)
Allowance for Credit Losses	0	0
Estimated Fair Value	439,115	460,844
Obligations of states and political subdivisions
Debt Securities, Available-for-Sale [Line Items]
Total AFS securities, Amortized Cost	25,635	26,030
Gross Unrealized Gains	21	5
Gross Unrealized Losses	(1,240)	(1,772)
Allowance for Credit Losses	0	0
Estimated Fair Value	24,416	24,263
Corporate obligations
Debt Securities, Available-for-Sale [Line Items]
Total AFS securities, Amortized Cost	28,556	31,199
Gross Unrealized Gains	136	75
Gross Unrealized Losses	(268)	(632)
Allowance for Credit Losses	0	0
Estimated Fair Value	28,424	30,642
Asset-backed securities
Debt Securities, Available-for-Sale [Line Items]
Total AFS securities, Amortized Cost	38,827	42,059
Gross Unrealized Gains	447	567
Gross Unrealized Losses	(143)	(145)
Allowance for Credit Losses	0	0
Estimated Fair Value	39,131	42,481
Other securities
Debt Securities, Available-for-Sale [Line Items]
Total AFS securities, Amortized Cost	3,199	4,007
Gross Unrealized Gains	10	10
Gross Unrealized Losses	(44)	(53)
Allowance for Credit Losses	0	0
Estimated Fair Value	3,165	3,964
Debt securities
Debt Securities, Available-for-Sale [Line Items]
Total AFS securities, Amortized Cost	96,217	103,295
Gross Unrealized Gains	614	657
Gross Unrealized Losses	(1,695)	(2,602)
Allowance for Credit Losses	0	0
Estimated Fair Value	95,136	101,350
Residential MBS issued by governmental sponsored enterprises (GSEs)
Debt Securities, Available-for-Sale [Line Items]
Total AFS securities, Amortized Cost	130,951	138,377
Gross Unrealized Gains	1,837	1,623
Gross Unrealized Losses	(4,239)	(5,005)
Allowance for Credit Losses	0	0
Estimated Fair Value	128,549	134,995
Commercial MBS issued by GSEs
Debt Securities, Available-for-Sale [Line Items]
Total AFS securities, Amortized Cost	103,740	96,377
Gross Unrealized Gains	419	446
Gross Unrealized Losses	(4,350)	(4,821)
Allowance for Credit Losses	0	0
Estimated Fair Value	99,809	92,002
CMOs issued by GSEs
Debt Securities, Available-for-Sale [Line Items]
Total AFS securities, Amortized Cost	119,799	137,346
Gross Unrealized Gains	295	402
Gross Unrealized Losses	(4,473)	(5,251)
Allowance for Credit Losses	0	0
Estimated Fair Value	115,621	132,497
MBS and CMOs
Debt Securities, Available-for-Sale [Line Items]
Total AFS securities, Amortized Cost	354,490	372,100
Gross Unrealized Gains	2,551	2,471
Gross Unrealized Losses	(13,062)	(15,077)
Allowance for Credit Losses	0	0
Estimated Fair Value	$ 343,979	$ 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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