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	Jun. 30, 2024	Jun. 30, 2023
Debt Securities, Available-for-Sale [Line Items]
Total AFS securities, Amortized Cost	$ 450,243	$ 445,616
Gross Unrealized Gains	2,680	1,494
Gross Unrealized Losses	(25,020)	(29,556)
Allowance for Credit Losses	0	0
Estimated Fair Value	427,903	417,554
Obligations of states and political subdivisions
Debt Securities, Available-for-Sale [Line Items]
Total AFS securities, Amortized Cost	29,960	45,285
Gross Unrealized Gains	4	20
Gross Unrealized Losses	(2,211)	(2,737)
Allowance for Credit Losses	0	0
Estimated Fair Value	27,753	42,568
Corporate Obligations
Debt Securities, Available-for-Sale [Line Items]
Total AFS securities, Amortized Cost	32,998	35,700
Gross Unrealized Gains	60	19
Gross Unrealized Losses	(1,781)	(3,181)
Allowance for Credit Losses	0	0
Estimated Fair Value	31,277	32,538
Asset backed securities
Debt Securities, Available-for-Sale [Line Items]
Total AFS securities, Amortized Cost	57,403	67,897
Gross Unrealized Gains	1,525	1,274
Gross Unrealized Losses	(249)	(545)
Allowance for Credit Losses	0
Estimated Fair Value	58,679	68,626
Other securities
Debt Securities, Available-for-Sale [Line Items]
Total AFS securities, Amortized Cost	5,387	3,587
Gross Unrealized Gains	20	39
Gross Unrealized Losses	(74)	(56)
Allowance for Credit Losses	0	0
Estimated Fair Value	5,333	3,570
Debt and Equity Securities
Debt Securities, Available-for-Sale [Line Items]
Total AFS securities, Amortized Cost	125,748	152,469
Gross Unrealized Gains	1,609	1,352
Gross Unrealized Losses	(4,315)	(6,519)
Allowance for Credit Losses	0	0
Estimated Fair Value	123,042	147,302
Residential MBS issued by governmental sponsored enterprises (GSEs)
Debt Securities, Available-for-Sale [Line Items]
Total AFS securities, Amortized Cost	110,918	97,612
Gross Unrealized Gains	692	122
Gross Unrealized Losses	(6,855)	(7,610)
Allowance for Credit Losses	0	0
Estimated Fair Value	104,755	90,124
Commercial MBS issued by GSEs
Debt Securities, Available-for-Sale [Line Items]
Total AFS securities, Amortized Cost	65,195	60,333
Gross Unrealized Gains	297	11
Gross Unrealized Losses	(5,746)	(6,959)
Allowance for Credit Losses	0	0
Estimated Fair Value	59,746	53,385
CMOs issued by GSEs
Debt Securities, Available-for-Sale [Line Items]
Total AFS securities, Amortized Cost	148,382	135,202
Gross Unrealized Gains	82	9
Gross Unrealized Losses	(8,104)	(8,468)
Allowance for Credit Losses	0	0
Estimated Fair Value	140,360	126,743
MBS and CMOs
Debt Securities, Available-for-Sale [Line Items]
Total AFS securities, Amortized Cost	324,495	293,147
Gross Unrealized Gains	1,071	142
Gross Unrealized Losses	(20,705)	(23,037)
Allowance for Credit Losses	0	0
Estimated Fair Value	$ 304,861	$ 270,252