Loans and Allowance for Credit Losses on Loans - Activity and Allocation of Allowance for Loan Losses (Details) - USD ($) $ in Thousands	12 Months Ended
Jun. 30, 2026	Jun. 30, 2025
Loans and Allowance for Credit Losses on Loans [Abstract]
Balance, beginning of period	$ 20,146	$ 19,244
Charge-offs	(482)	(514)
Recoveries	144	165
Provision	2,051	1,251
Balance, end of period	21,859	20,146
Commercial Portfolio [Member]
Loans and Allowance for Credit Losses on Loans [Abstract]
Balance, beginning of period	2,278	2,077
Charge-offs	(87)	(66)
Recoveries	34	40
Provision	679	227
Balance, end of period	2,904	2,278
Residential Real Estate [Member] \| Residential Portfolio [Member]
Loans and Allowance for Credit Losses on Loans [Abstract]
Balance, beginning of period	4,613	4,237
Charge-offs	(43)	(44)
Recoveries	2	2
Provision	65	418
Balance, end of period	4,637	4,613
Real Estate [Member] \| Commercial Real Estate Portfolio [Member]
Loans and Allowance for Credit Losses on Loans [Abstract]
Balance, beginning of period	12,614	12,218
Charge-offs	0	(5)
Recoveries	4	4
Provision	1,002	397
Balance, end of period	13,620	12,614
Home Equity [Member] \| Consumer Portfolio [Member]
Loans and Allowance for Credit Losses on Loans [Abstract]
Balance, beginning of period	260	212
Charge-offs	0	(13)
Recoveries	0	0
Provision	118	61
Balance, end of period	378	260
Consumer [Member] \| Consumer Portfolio [Member]
Loans and Allowance for Credit Losses on Loans [Abstract]
Balance, beginning of period	381	500
Charge-offs	(352)	(386)
Recoveries	104	119
Provision	187	148
Balance, end of period	$ 320	$ 381

Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

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