Loans and Allowance for Loan Losses, Activity and Allocation of Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended
Sep. 30, 2022	Sep. 30, 2021	Jun. 30, 2022
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	22,761	$ 19,668
Charge-offs	171	201
Recoveries	56	38
Provision	(499)	988
Balance, end of period	22,147	20,493
Allocation of allowance for loan losses by loan category [Abstract]
Allowance for loan losses, ending balance, impairment analysis individually evaluated	2,647		$ 2,347
Allowance for loan losses, ending balance, impairment analysis collectively evaluated	19,500		20,414
Loans receivable, ending balance, impairment analysis individually evaluated	10,034		10,771
Loans receivable, ending balance, impairment analysis collectively evaluated	$ 1,339,895		1,241,216
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	$ 2,373	2,012
Charge-offs	0	0
Recoveries	3	0
Provision	95	(15)
Balance, end of period	2,471	1,997
Allocation of allowance for loan losses by loan category [Abstract]
Allowance for loan losses, ending balance, impairment analysis individually evaluated	578		588
Allowance for loan losses, ending balance, impairment analysis collectively evaluated	1,893		1,785
Loans receivable, ending balance, impairment analysis individually evaluated	2,936		2,943
Loans receivable, ending balance, impairment analysis collectively evaluated	365,206		357,881
Residential Real Estate [Member] \| Construction and Land [Member]
Activity of allowance for loan losses by loan category [Roll Forward]
Balance, beginning of period	141	106
Charge-offs	0	0
Recoveries	0	0
Provision	36	14
Balance, end of period	177	120
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	177		141
Loans receivable, ending balance, impairment analysis individually evaluated	0		0
Loans receivable, ending balance, impairment analysis collectively evaluated	18,226		15,298
Residential Real Estate [Member] \| Multi-family [Member]
Activity of allowance for loan losses by loan category [Roll Forward]
Balance, beginning of period	119	186
Charge-offs	0	0
Recoveries	0	0
Provision	40	(86)
Balance, end of period	159	100
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	159		119
Loans receivable, ending balance, impairment analysis individually evaluated	0		0
Loans receivable, ending balance, impairment analysis collectively evaluated	67,088		63,822
Commercial Real Estate [Member] \| Real Estate [Member]
Activity of allowance for loan losses by loan category [Roll Forward]
Balance, beginning of period	16,221	13,049
Charge-offs	0	0
Recoveries	0	0
Provision	(829)	1,249
Balance, end of period	15,392	14,298
Allocation of allowance for loan losses by loan category [Abstract]
Allowance for loan losses, ending balance, impairment analysis individually evaluated	1,070		1,118
Allowance for loan losses, ending balance, impairment analysis collectively evaluated	14,322		15,103
Loans receivable, ending balance, impairment analysis individually evaluated	3,274		3,765
Loans receivable, ending balance, impairment analysis collectively evaluated	674,348		591,870
Commercial Real Estate [Member] \| Construction [Member]
Activity of allowance for loan losses by loan category [Roll Forward]
Balance, beginning of period	1,114	1,535
Charge-offs	0	0
Recoveries	0	0
Provision	(70)	(337)
Balance, end of period	1,044	1,198
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	1,043		1,113
Loans receivable, ending balance, impairment analysis individually evaluated	102		102
Loans receivable, ending balance, impairment analysis collectively evaluated	$ 81,497		83,646
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	$ 89	165
Charge-offs	0	0
Recoveries	0	0
Provision	(45)	(25)
Balance, end of period	44	140
Allocation of allowance for loan losses by loan category [Abstract]
Allowance for loan losses, ending balance, impairment analysis individually evaluated	5		44
Allowance for loan losses, ending balance, impairment analysis collectively evaluated	39		45
Loans receivable, ending balance, impairment analysis individually evaluated	448		448
Loans receivable, ending balance, impairment analysis collectively evaluated	19,072		17,429
Consumer Loan [Member] \| Consumer Installment [Member]
Activity of allowance for loan losses by loan category [Roll Forward]
Balance, beginning of period	349	267
Charge-offs	167	104
Recoveries	46	37
Provision	46	90
Balance, end of period	274	290
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	274		349
Loans receivable, ending balance, impairment analysis individually evaluated	5		5
Loans receivable, ending balance, impairment analysis collectively evaluated	$ 4,541		4,507
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	$ 2,355	2,348
Charge-offs	4	97
Recoveries	7	1
Provision	228	98
Balance, end of period	2,586	$ 2,350
Allocation of allowance for loan losses by loan category [Abstract]
Allowance for loan losses, ending balance, impairment analysis individually evaluated	993		596
Allowance for loan losses, ending balance, impairment analysis collectively evaluated	1,593		1,759
Loans receivable, ending balance, impairment analysis individually evaluated	3,269		3,508
Loans receivable, ending balance, impairment analysis collectively evaluated	$ 109,917		$ 106,763

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

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

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