Loans and Allowance for Credit Losses on Loans, Activity and Allocation of Allowance for Loan Losses by Loan Class (Details) - USD ($) $ in Thousands	3 Months Ended
Sep. 30, 2023	Sep. 30, 2022
Activity and Allocation of Allowance for Loan Losses by Loan Class [Roll Forward]
Balance, beginning of period	$ 21,212	$ 22,761
Charge-offs	129	171
Recoveries	36	56
Provision	462	(499)
Balance, end of period	20,249	22,147
Cumulative Effect Adjustment for ASU Implementation [Member] \| Adoption of ASU No. 2016-13 [Member]
Activity and Allocation of Allowance for Loan Losses by Loan Class [Roll Forward]
Balance, beginning of period	(1,332)
Residential Real Estate [Member] \| Residential Real Estate [Member]
Activity and Allocation of Allowance for Loan Losses by Loan Class [Roll Forward]
Balance, beginning of period	2,794	2,373
Charge-offs	0	0
Recoveries	0	3
Provision	317	95
Balance, end of period	4,293	2,471
Residential Real Estate [Member] \| Residential Real Estate [Member] \| Cumulative Effect Adjustment for ASU Implementation [Member] \| Adoption of ASU No. 2016-13 [Member]
Activity and Allocation of Allowance for Loan Losses by Loan Class [Roll Forward]
Balance, beginning of period	1,182
Residential Real Estate [Member] \| Construction and Land [Member]
Activity and Allocation of Allowance for Loan Losses by Loan Class [Roll Forward]
Balance, beginning of period		141
Charge-offs		0
Recoveries		0
Provision		36
Balance, end of period		177
Residential Real Estate [Member] \| Multi-family [Member]
Activity and Allocation of Allowance for Loan Losses by Loan Class [Roll Forward]
Balance, beginning of period		119
Charge-offs		0
Recoveries		0
Provision		40
Balance, end of period		159
Commercial Real Estate [Member] \| Real Estate [Member]
Activity and Allocation of Allowance for Loan Losses by Loan Class [Roll Forward]
Balance, beginning of period	14,839	16,221
Charge-offs	0	0
Recoveries	1	0
Provision	405	(829)
Balance, end of period	12,356	15,392
Commercial Real Estate [Member] \| Real Estate [Member] \| Cumulative Effect Adjustment for ASU Implementation [Member] \| Adoption of ASU No. 2016-13 [Member]
Activity and Allocation of Allowance for Loan Losses by Loan Class [Roll Forward]
Balance, beginning of period	(2,889)
Commercial Real Estate [Member] \| Construction [Member]
Activity and Allocation of Allowance for Loan Losses by Loan Class [Roll Forward]
Balance, beginning of period		1,114
Charge-offs		0
Recoveries		0
Provision		(70)
Balance, end of period		1,044
Consumer Loan [Member] \| Home Equity [Member]
Activity and Allocation of Allowance for Loan Losses by Loan Class [Roll Forward]
Balance, beginning of period	46	89
Charge-offs	0	0
Recoveries	0	0
Provision	25	(45)
Balance, end of period	188	44
Consumer Loan [Member] \| Home Equity [Member] \| Cumulative Effect Adjustment for ASU Implementation [Member] \| Adoption of ASU No. 2016-13 [Member]
Activity and Allocation of Allowance for Loan Losses by Loan Class [Roll Forward]
Balance, beginning of period	117
Consumer Loan [Member] \| Consumer [Member]
Activity and Allocation of Allowance for Loan Losses by Loan Class [Roll Forward]
Balance, beginning of period	332	349
Charge-offs	122	167
Recoveries	26	46
Provision	117	46
Balance, end of period	490	274
Consumer Loan [Member] \| Consumer [Member] \| Cumulative Effect Adjustment for ASU Implementation [Member] \| Adoption of ASU No. 2016-13 [Member]
Activity and Allocation of Allowance for Loan Losses by Loan Class [Roll Forward]
Balance, beginning of period	137
Commercial Loans [Member]
Activity and Allocation of Allowance for Loan Losses by Loan Class [Roll Forward]
Balance, beginning of period	3,201	2,355
Charge-offs	7	4
Recoveries	9	7
Provision	(402)	228
Balance, end of period	2,922	$ 2,586
Commercial Loans [Member] \| Cumulative Effect Adjustment for ASU Implementation [Member] \| Adoption of ASU No. 2016-13 [Member]
Activity and Allocation of Allowance for Loan Losses by Loan Class [Roll Forward]
Balance, beginning of period	$ 121

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- Definition

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

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- Definition

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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Amount of credit loss expense (reversal of expense) for financing receivable.

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