Loans Receivable - Summary of Activity in Allowance for Credit Losses and Recorded Investment in Loans Receivable by Loan Class (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
Loans and Leases Receivable Disclosure [Line Items]
Allowance for credit losses, Beginning balance	$ 5,229	$ 1,116
Allowance for credit losses, Charge-offs	0	0
Allowance for credit losses, Recoveries	0	0
Allowance for credit losses, Provisions (credits)	133	4,066
Allowance for credit losses, Ending balance	5,362	5,229
Allowance for Credit Losses:Ending balance, Individually evaluated for impairment	0	0
Allowance for Credit Losses: Ending balance, Collectively evaluated for impairment	5,362	5,229
Ending balance	800,239	735,017
Loans receivable, Ending balance, individually evaluated for impairment	0	50
Loans receivable, Ending balance, Collectively evaluated for impairment	800,239	734,967
ASU 2016-13
Loans and Leases Receivable Disclosure [Line Items]
Allowance for credit losses, Beginning balance		47
Owner Occupied Commercial Real Estate Loans
Loans and Leases Receivable Disclosure [Line Items]
Allowance for credit losses, Beginning balance	1,331	0
Allowance for credit losses, Charge-offs	0	0
Allowance for credit losses, Recoveries	0	0
Allowance for credit losses, Provisions (credits)	(656)	1,331
Allowance for credit losses, Ending balance	675	1,331
Allowance for Credit Losses:Ending balance, Individually evaluated for impairment	0	0
Allowance for Credit Losses: Ending balance, Collectively evaluated for impairment	675	1,331
Ending balance	55,127	59,968
Loans receivable, Ending balance, individually evaluated for impairment	0	0
Loans receivable, Ending balance, Collectively evaluated for impairment	55,127	59,968
Owner Occupied Commercial Real Estate Loans | ASU 2016-13
Loans and Leases Receivable Disclosure [Line Items]
Allowance for credit losses, Beginning balance		0
Multi-Family
Loans and Leases Receivable Disclosure [Line Items]
Allowance for credit losses, Beginning balance	1,998	0
Allowance for credit losses, Charge-offs	0	0
Allowance for credit losses, Recoveries	0	0
Allowance for credit losses, Provisions (credits)	(168)	1,998
Allowance for credit losses, Ending balance	1,830	1,998
Allowance for Credit Losses:Ending balance, Individually evaluated for impairment	0	0
Allowance for Credit Losses: Ending balance, Collectively evaluated for impairment	1,830	1,998
Ending balance	219,934	180,364
Loans receivable, Ending balance, individually evaluated for impairment	0	0
Loans receivable, Ending balance, Collectively evaluated for impairment	219,934	180,364
Multi-Family | ASU 2016-13
Loans and Leases Receivable Disclosure [Line Items]
Allowance for credit losses, Beginning balance		0
Other Commercial Real Estate
Loans and Leases Receivable Disclosure [Line Items]
Allowance for credit losses, Beginning balance	502	4
Allowance for credit losses, Charge-offs	0	0
Allowance for credit losses, Recoveries	0	0
Allowance for credit losses, Provisions (credits)	(323)	498
Allowance for credit losses, Ending balance	179	502
Allowance for Credit Losses:Ending balance, Individually evaluated for impairment	0	0
Allowance for Credit Losses: Ending balance, Collectively evaluated for impairment	179	502
Ending balance	72,542	75,782
Loans receivable, Ending balance, individually evaluated for impairment	0	0
Loans receivable, Ending balance, Collectively evaluated for impairment	72,542	75,782
Other Commercial Real Estate | ASU 2016-13
Loans and Leases Receivable Disclosure [Line Items]
Allowance for credit losses, Beginning balance		0
Commercial and Industrial
Loans and Leases Receivable Disclosure [Line Items]
Allowance for credit losses, Beginning balance	146	0
Allowance for credit losses, Charge-offs	0	0
Allowance for credit losses, Recoveries	0	0
Allowance for credit losses, Provisions (credits)	(11)	146
Allowance for credit losses, Ending balance	135	146
Allowance for Credit Losses:Ending balance, Individually evaluated for impairment	0	0
Allowance for Credit Losses: Ending balance, Collectively evaluated for impairment	135	146
Ending balance	12,253	12,522
Loans receivable, Ending balance, individually evaluated for impairment	0	50
Loans receivable, Ending balance, Collectively evaluated for impairment	12,253	12,472
Commercial and Industrial | ASU 2016-13
Loans and Leases Receivable Disclosure [Line Items]
Allowance for credit losses, Beginning balance		0
Residential Mortgage
Loans and Leases Receivable Disclosure [Line Items]
Allowance for credit losses, Beginning balance	1,175	1,039
Allowance for credit losses, Charge-offs	0	0
Allowance for credit losses, Recoveries	0	0
Allowance for credit losses, Provisions (credits)	1,133	109
Allowance for credit losses, Ending balance	2,308	1,175
Allowance for Credit Losses:Ending balance, Individually evaluated for impairment	0	0
Allowance for Credit Losses: Ending balance, Collectively evaluated for impairment	2,308	1,175
Ending balance	427,345	394,723
Loans receivable, Ending balance, individually evaluated for impairment	0	0
Loans receivable, Ending balance, Collectively evaluated for impairment	427,345	394,723
Residential Mortgage | ASU 2016-13
Loans and Leases Receivable Disclosure [Line Items]
Allowance for credit losses, Beginning balance		27
Consumer and Other
Loans and Leases Receivable Disclosure [Line Items]
Allowance for credit losses, Beginning balance	77	73
Allowance for credit losses, Charge-offs	0	0
Allowance for credit losses, Recoveries	0	0
Allowance for credit losses, Provisions (credits)	158	(16)
Allowance for credit losses, Ending balance	235	77
Allowance for Credit Losses:Ending balance, Individually evaluated for impairment	0	0
Allowance for Credit Losses: Ending balance, Collectively evaluated for impairment	235	77
Ending balance	13,038	11,658
Loans receivable, Ending balance, individually evaluated for impairment	0	0
Loans receivable, Ending balance, Collectively evaluated for impairment	$ 13,038	11,658
Consumer and Other | ASU 2016-13
Loans and Leases Receivable Disclosure [Line Items]
Allowance for credit losses, Beginning balance		$ 20