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, 2023	Jun. 30, 2022
Debt Securities, Available-for-sale [Line Items]
Total AFS securities, Amortized Cost	$ 453,103	$ 257,760
Gross Unrealized Gains	2,101	109
Gross Unrealized Losses	(25,406)	(22,475)
Allowance for Credit Losses	0	0
Estimated Fair Value	429,798	235,394
U.S. government-sponsored enterprises (GSEs)
Debt Securities, Available-for-sale [Line Items]
Total AFS securities, Amortized Cost	8,476
Gross Unrealized Gains	265
Allowance for Credit Losses	0
Estimated Fair Value	8,741
Obligations of states and political subdivisions
Debt Securities, Available-for-sale [Line Items]
Total AFS securities, Amortized Cost	45,740	47,383
Gross Unrealized Gains	43	77
Gross Unrealized Losses	(2,377)	(2,981)
Allowance for Credit Losses	0	0
Estimated Fair Value	43,406	44,479
Corporate Obligations
Debt Securities, Available-for-sale [Line Items]
Total AFS securities, Amortized Cost	36,644	20,818
Gross Unrealized Gains	68	32
Gross Unrealized Losses	(2,416)	(963)
Allowance for Credit Losses	0	0
Estimated Fair Value	34,296	19,887
Asset backed securities
Debt Securities, Available-for-sale [Line Items]
Total AFS securities, Amortized Cost	59,592
Gross Unrealized Gains	850
Gross Unrealized Losses	(95)
Allowance for Credit Losses	0
Estimated Fair Value	60,347
Other securities
Debt Securities, Available-for-sale [Line Items]
Total AFS securities, Amortized Cost	3,600	486
Gross Unrealized Gains	46
Gross Unrealized Losses	(60)	(43)
Allowance for Credit Losses	0	0
Estimated Fair Value	3,586	443
Debt and Equity Securities
Debt Securities, Available-for-sale [Line Items]
Total AFS securities, Amortized Cost	154,052	68,687
Gross Unrealized Gains	1,272	109
Gross Unrealized Losses	(4,948)	(3,987)
Allowance for Credit Losses	0	0
Estimated Fair Value	150,376	64,809
Residential MBS issued by governmental sponsored enterprises (GSEs)
Debt Securities, Available-for-sale [Line Items]
Total AFS securities, Amortized Cost	100,054	76,345
Gross Unrealized Gains	738
Gross Unrealized Losses	(7,440)	(7,177)
Allowance for Credit Losses	0	0
Estimated Fair Value	93,352	69,168
Commercial MBS issued by GSEs
Debt Securities, Available-for-sale [Line Items]
Total AFS securities, Amortized Cost	60,485	51,435
Gross Unrealized Gains	83
Gross Unrealized Losses	(5,747)	(5,705)
Allowance for Credit Losses	0	0
Estimated Fair Value	54,821	45,730
CMOs issued by GSEs
Debt Securities, Available-for-sale [Line Items]
Total AFS securities, Amortized Cost	138,512	61,293
Gross Unrealized Gains	8
Gross Unrealized Losses	(7,271)	(5,606)
Allowance for Credit Losses	0	0
Estimated Fair Value	131,249	55,687
Total MBS and CMOs
Debt Securities, Available-for-sale [Line Items]
Total AFS securities, Amortized Cost	299,051	189,073
Gross Unrealized Gains	829
Gross Unrealized Losses	(20,458)	(18,488)
Allowance for Credit Losses	0	0
Estimated Fair Value	$ 279,422	$ 170,585