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	Dec. 31, 2023	Jun. 30, 2023
Debt Securities, Available-for-sale [Line Items]
Total AFS securities, Amortized Cost	$ 441,462	$ 445,616
Gross Unrealized Gains	2,107	1,494
Gross Unrealized Losses	(26,163)	(29,556)
Allowance for Credit Losses	0	0
Estimated Fair Value	417,406	417,554
Obligations of states and political subdivisions
Debt Securities, Available-for-sale [Line Items]
Total AFS securities, Amortized Cost	41,965	45,285
Gross Unrealized Gains	55	20
Gross Unrealized Losses	(2,021)	(2,737)
Allowance for Credit Losses	0	0
Estimated Fair Value	39,999	42,568
Corporate Obligations
Debt Securities, Available-for-sale [Line Items]
Total AFS securities, Amortized Cost	35,781	35,700
Gross Unrealized Gains	66	19
Gross Unrealized Losses	(2,501)	(3,181)
Allowance for Credit Losses	0	0
Estimated Fair Value	33,346	32,538
Asset backed securities
Debt Securities, Available-for-sale [Line Items]
Total AFS securities, Amortized Cost	65,491	67,897
Gross Unrealized Gains	1,324	1,274
Gross Unrealized Losses	(401)	(545)
Allowance for Credit Losses	0
Estimated Fair Value	66,414	68,626
Other securities
Debt Securities, Available-for-sale [Line Items]
Total AFS securities, Amortized Cost	6,319	3,587
Gross Unrealized Gains	21	39
Gross Unrealized Losses	(69)	(56)
Allowance for Credit Losses	0	0
Estimated Fair Value	6,271	3,570
Debt and Equity Securities
Debt Securities, Available-for-sale [Line Items]
Total AFS securities, Amortized Cost	149,556	152,469
Gross Unrealized Gains	1,466	1,352
Gross Unrealized Losses	(4,992)	(6,519)
Allowance for Credit Losses	0	0
Estimated Fair Value	146,030	147,302
Residential MBS issued by governmental sponsored enterprises (GSEs)
Debt Securities, Available-for-sale [Line Items]
Total AFS securities, Amortized Cost	90,452	97,612
Gross Unrealized Gains	273	122
Gross Unrealized Losses	(6,758)	(7,610)
Allowance for Credit Losses	0	0
Estimated Fair Value	83,967	90,124
Commercial MBS issued by GSEs
Debt Securities, Available-for-sale [Line Items]
Total AFS securities, Amortized Cost	66,026	60,333
Gross Unrealized Gains	328	11
Gross Unrealized Losses	(6,075)	(6,959)
Allowance for Credit Losses	0	0
Estimated Fair Value	60,279	53,385
CMOs issued by GSEs
Debt Securities, Available-for-sale [Line Items]
Total AFS securities, Amortized Cost	135,428	135,202
Gross Unrealized Gains	40	9
Gross Unrealized Losses	(8,338)	(8,468)
Allowance for Credit Losses	0	0
Estimated Fair Value	127,130	126,743
Total MBS and CMOs
Debt Securities, Available-for-sale [Line Items]
Total AFS securities, Amortized Cost	291,906	293,147
Gross Unrealized Gains	641	142
Gross Unrealized Losses	(21,171)	(23,037)
Allowance for Credit Losses	0	0
Estimated Fair Value	$ 271,376	$ 270,252