Loans, Activity and Allocation of Allowance for Loan Losses (Details) - USD ($) $ in Thousands	12 Months Ended
Jun. 30, 2022	Jun. 30, 2021
Allowance for Loan Losses [Abstract]
Threshold principal amount of nonaccrual loans evaluated individually for impairment	$ 250
Activity of allowance for loan losses by loan category [Roll Forward]
Balance, beginning of period	19,668	$ 16,391
Charge-offs	593	835
Recoveries	408	138
Provision	3,278	3,974
Balance, end of period	22,761	19,668
Allocation of allowance for loan losses by loan category [Abstract]
Allowance for loan losses, ending balance, impairment analysis individually evaluated	2,347	391
Allowance for loan losses, ending balance, impairment analysis collectively evaluated	20,414	19,277
Loans receivable, ending balance, impairment analysis individually evaluated	10,771	6,295
Loans receivable, ending balance, impairment analysis collectively evaluated	$ 1,241,216	1,102,113
Smaller Business Loans [Member] \| Unsecured [Member]
Allowance for Loan Losses [Abstract]
Threshold period to charge off loans against allowance for loan losses	90 days
Residential Real Estate [Member] \| Residential Real Estate [Member]
Activity of allowance for loan losses by loan category [Roll Forward]
Balance, beginning of period	$ 2,012	2,091
Charge-offs	27	26
Recoveries	13	13
Provision	375	(66)
Balance, end of period	2,373	2,012
Allocation of allowance for loan losses by loan category [Abstract]
Allowance for loan losses, ending balance, impairment analysis individually evaluated	588	103
Allowance for loan losses, ending balance, impairment analysis collectively evaluated	1,785	1,909
Loans receivable, ending balance, impairment analysis individually evaluated	2,943	1,093
Loans receivable, ending balance, impairment analysis collectively evaluated	357,881	324,074
Residential Real Estate [Member] \| Construction and Land [Member]
Activity of allowance for loan losses by loan category [Roll Forward]
Balance, beginning of period	106	141
Charge-offs	0	0
Recoveries	0	0
Provision	35	(35)
Balance, end of period	141	106
Allocation of allowance for loan losses by loan category [Abstract]
Allowance for loan losses, ending balance, impairment analysis individually evaluated	0	0
Allowance for loan losses, ending balance, impairment analysis collectively evaluated	141	106
Loans receivable, ending balance, impairment analysis individually evaluated	0	0
Loans receivable, ending balance, impairment analysis collectively evaluated	15,298	10,185
Residential Real Estate [Member] \| Multi-family [Member]
Activity of allowance for loan losses by loan category [Roll Forward]
Balance, beginning of period	186	176
Charge-offs	0	0
Recoveries	0	0
Provision	(67)	10
Balance, end of period	119	186
Allocation of allowance for loan losses by loan category [Abstract]
Allowance for loan losses, ending balance, impairment analysis individually evaluated	0	0
Allowance for loan losses, ending balance, impairment analysis collectively evaluated	119	186
Loans receivable, ending balance, impairment analysis individually evaluated	0	0
Loans receivable, ending balance, impairment analysis collectively evaluated	63,822	41,951
Commercial Real Estate [Member] \| Real Estate [Member]
Activity of allowance for loan losses by loan category [Roll Forward]
Balance, beginning of period	13,049	8,634
Charge-offs	0	0
Recoveries	0	0
Provision	3,172	4,415
Balance, end of period	16,221	13,049
Allocation of allowance for loan losses by loan category [Abstract]
Allowance for loan losses, ending balance, impairment analysis individually evaluated	1,118	58
Allowance for loan losses, ending balance, impairment analysis collectively evaluated	15,103	12,991
Loans receivable, ending balance, impairment analysis individually evaluated	3,765	1,226
Loans receivable, ending balance, impairment analysis collectively evaluated	591,870	471,661
Commercial Real Estate [Member] \| Construction [Member]
Activity of allowance for loan losses by loan category [Roll Forward]
Balance, beginning of period	1,535	2,053
Charge-offs	0	0
Recoveries	0	0
Provision	(421)	(518)
Balance, end of period	1,114	1,535
Allocation of allowance for loan losses by loan category [Abstract]
Allowance for loan losses, ending balance, impairment analysis individually evaluated	1	1
Allowance for loan losses, ending balance, impairment analysis collectively evaluated	1,113	1,534
Loans receivable, ending balance, impairment analysis individually evaluated	102	102
Loans receivable, ending balance, impairment analysis collectively evaluated	$ 83,646	62,661
Consumer Loan [Member] \| Unsecured [Member]
Allowance for Loan Losses [Abstract]
Threshold period to charge off loans against allowance for loan losses	90 days
Consumer Loan [Member] \| Home Equity [Member]
Activity of allowance for loan losses by loan category [Roll Forward]
Balance, beginning of period	$ 165	295
Charge-offs	0	0
Recoveries	0	0
Provision	(76)	(130)
Balance, end of period	89	165
Allocation of allowance for loan losses by loan category [Abstract]
Allowance for loan losses, ending balance, impairment analysis individually evaluated	44	73
Allowance for loan losses, ending balance, impairment analysis collectively evaluated	45	92
Loans receivable, ending balance, impairment analysis individually evaluated	448	545
Loans receivable, ending balance, impairment analysis collectively evaluated	17,429	17,740
Consumer Loan [Member] \| Consumer Installment [Member]
Activity of allowance for loan losses by loan category [Roll Forward]
Balance, beginning of period	267	197
Charge-offs	454	309
Recoveries	115	124
Provision	421	255
Balance, end of period	349	267
Allocation of allowance for loan losses by loan category [Abstract]
Allowance for loan losses, ending balance, impairment analysis individually evaluated	0	0
Allowance for loan losses, ending balance, impairment analysis collectively evaluated	349	267
Loans receivable, ending balance, impairment analysis individually evaluated	5	0
Loans receivable, ending balance, impairment analysis collectively evaluated	$ 4,507	4,942
Consumer Loan [Member] \| Consumer Installment [Member] \| Unsecured [Member]
Allowance for Loan Losses [Abstract]
Threshold period to charge off overdrawn deposit accounts against allowance for loan losses	60 days
Commercial Loans [Member]
Activity of allowance for loan losses by loan category [Roll Forward]
Balance, beginning of period	$ 2,348	2,804
Charge-offs	112	500
Recoveries	280	1
Provision	(161)	43
Balance, end of period	2,355	2,348
Allocation of allowance for loan losses by loan category [Abstract]
Allowance for loan losses, ending balance, impairment analysis individually evaluated	596	156
Allowance for loan losses, ending balance, impairment analysis collectively evaluated	1,759	2,192
Loans receivable, ending balance, impairment analysis individually evaluated	3,508	3,329
Loans receivable, ending balance, impairment analysis collectively evaluated	$ 106,763	$ 168,899

The threshold principal amount of nonaccrual loans evaluated individually for impairment.

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- Definition

Threshold period for overdrawn financing receivable to write off as uncollectible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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

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The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

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Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

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Amount of increase in allowance for credit loss on financing receivable from recovery.

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Amount of writeoff of financing receivable, charged against allowance for credit loss.

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The balance of financing receivables that were collectively evaluated for impairment.

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The balance of financing receivables that were individually evaluated for impairment.

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Threshold period for when financing receivable is considered past due to write off as uncollectible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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