Loans and Allowance for Credit Losses on Loans, Allowance for Credit Losses on Loans (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022
Allowance for Credit Loss [Abstract]
Threshold principal amount of collateral dependent loans evaluated individually	$ 250		$ 250
Activity and Allocation of Allowance for Credit Losses on Loans by Segment [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
Unfunded Commitments [Member]
Activity and Allocation of Allowance for Credit Losses on Loans by Segment [Roll Forward]
Allowance for credit losses	$ 1,600		1,600
Cumulative Effect Adjustment for ASU Implementation [Member] \| Adoption of ASU No. 2016-13 [Member]
Activity and Allocation of Allowance for Credit Losses on Loans by Segment [Roll Forward]
Balance, beginning of period			$ (1,332)
Smaller Business Loans [Member] \| Uncollateralized [Member]
Allowance for Credit Loss [Abstract]
Threshold period to charge off loans against allowance for loan losses	90 days		90 days
Residential Real Estate [Member] \| Residential Real Estate [Member]
Activity and Allocation of Allowance for Credit Losses on Loans by Segment [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 Credit Losses on Loans by Segment [Roll Forward]
Balance, beginning of period			1,182
Residential Real Estate [Member] \| Construction and Land [Member]
Activity and Allocation of Allowance for Credit Losses on Loans by Segment [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 Credit Losses on Loans by Segment [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 Credit Losses on Loans by Segment [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 Credit Losses on Loans by Segment [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 Credit Losses on Loans by Segment [Roll Forward]
Balance, beginning of period			$ (2,889)
Commercial Real Estate [Member] \| Construction [Member]
Activity and Allocation of Allowance for Credit Losses on Loans by Segment [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] \| Uncollateralized [Member]
Allowance for Credit Loss [Abstract]
Threshold period to charge off loans against allowance for loan losses	90 days		90 days
Threshold period to charge off overdrawn deposit accounts against allowance for loan losses			60 days
Consumer Loan [Member] \| Home Equity [Member]
Activity and Allocation of Allowance for Credit Losses on Loans by Segment [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 Credit Losses on Loans by Segment [Roll Forward]
Balance, beginning of period			117
Consumer Loan [Member] \| Consumer [Member]
Activity and Allocation of Allowance for Credit Losses on Loans by Segment [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 Credit Losses on Loans by Segment [Roll Forward]
Balance, beginning of period			137
Commercial Loans [Member]
Activity and Allocation of Allowance for Credit Losses on Loans by Segment [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 Credit Losses on Loans by Segment [Roll Forward]
Balance, beginning of period			$ 121

The threshold principal amount of collateral dependent loans evaluated individually.

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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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- Definition

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

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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

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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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Amount of expected credit loss for credit exposure on off-balance-sheet commitment, including but not limited to, loan commitment, standby letter of credit, financial guarantee not accounted for as insurance. Excludes off-balance sheet credit exposure accounted for as insurance and instrument accounted for under derivatives and hedging.

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

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