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	6 Months Ended
Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022
Activity and Allocation of Allowance for Loan Losses by Loan Class [Roll Forward]
Balance, beginning of period	$ 20,249	$ 22,147	$ 21,212	$ 22,761
Charge-offs	160	144	289	315
Recoveries	37	42	73	98
Provision	183	244	645	(255)
Balance, end of period	20,309	22,289	20,309	22,289
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	3,869	2,471	2,794
Charge-offs	0	0	0
Recoveries	0	2	0
Provision	141	19	34
Balance, end of period	4,010	2,492	4,010	2,492
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		177		141
Charge-offs		0		0
Recoveries		0		0
Provision		16		52
Balance, end of period		193		193
Residential Real Estate [Member] \| Multi-family [Member]
Activity and Allocation of Allowance for Loan Losses by Loan Class [Roll Forward]
Balance, beginning of period		159		119
Charge-offs		0		0
Recoveries		0		0
Provision		8		48
Balance, end of period		167		167
Residential Real Estate [Member] \| Real Estate [Member]
Activity and Allocation of Allowance for Loan Losses by Loan Class [Roll Forward]
Balance, beginning of period				2,373
Charge-offs				0
Recoveries				5
Provision				114
Balance, end of period		2,492		2,492
Commercial Real Estate [Member] \| Real Estate [Member]
Activity and Allocation of Allowance for Loan Losses by Loan Class [Roll Forward]
Balance, beginning of period	12,356	15,392	14,839	16,221
Charge-offs	0	0	0	0
Recoveries	0	0	1	0
Provision	167	58	572	(771)
Balance, end of period	12,523	15,450	12,523	15,450
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		1,044		1,114
Charge-offs		0		0
Recoveries		0		0
Provision		56		(14)
Balance, end of period		1,100		1,100
Consumer Loan [Member] \| Home Equity [Member]
Activity and Allocation of Allowance for Loan Losses by Loan Class [Roll Forward]
Balance, beginning of period	188	44	46	89
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision	4	(6)	29	(51)
Balance, end of period	192	38	192	38
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	490	274	332	349
Charge-offs	154	137	276	304
Recoveries	28	29	54	75
Provision	122	118	239	164
Balance, end of period	486	284	486	284
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	3,346	2,586	3,201	2,355
Charge-offs	6	7	13	11
Recoveries	9	11	18	18
Provision	(251)	(25)	(229)	203
Balance, end of period	$ 3,098	$ 2,565	3,098	$ 2,565
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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