Loans and Allowance for Credit Losses on Loans, Delinquent and Nonaccrual Loans by Past Due Status (Details) $ in Thousands		3 Months Ended
		Sep. 30, 2024 USD ($) Loan	Jun. 30, 2024 USD ($) Loan
Delinquent and/or Nonaccrual Loans by Past Due Status [Abstract]
Total loans	[1],[2]	$ 1,501,212	$ 1,499,473
Loans on non-accrual		3,647	3,728
Nonaccrual loans with recent history of delinquency greater than 90 days		1,400	1,500
Loan repayments		410
Charge-offs		57
Loans returning to performing status		56
Loans placed into nonperforming status		441
Accruing loans delinquent more than 90 days		0	0
Total Past Due [Member]
Delinquent and/or Nonaccrual Loans by Past Due Status [Abstract]
Total loans		3,137	3,172
30 to 59 Days Past Due [Member]
Delinquent and/or Nonaccrual Loans by Past Due Status [Abstract]
Total loans		16	61
60 to 89 Days Past Due [Member]
Delinquent and/or Nonaccrual Loans by Past Due Status [Abstract]
Total loans		840	844
90 Days or More Past Due [Member]
Delinquent and/or Nonaccrual Loans by Past Due Status [Abstract]
Total loans		2,281	2,267
Current [Member]
Delinquent and/or Nonaccrual Loans by Past Due Status [Abstract]
Total loans		$ 1,498,075	$ 1,496,301
Residential Real Estate [Member]
Delinquent and/or Nonaccrual Loans by Past Due Status [Abstract]
Number of loans in the process of foreclosure | Loan		3	4
Loans in the process of foreclosure		$ 395	$ 686
Residential Real Estate [Member] | Residential Real Estate [Member]
Delinquent and/or Nonaccrual Loans by Past Due Status [Abstract]
Total loans		413,810	417,589
Loans on non-accrual		2,277	2,518
Residential Real Estate [Member] | Residential Real Estate [Member] | Total Past Due [Member]
Delinquent and/or Nonaccrual Loans by Past Due Status [Abstract]
Total loans		1,795	2,252
Residential Real Estate [Member] | Residential Real Estate [Member] | 30 to 59 Days Past Due [Member]
Delinquent and/or Nonaccrual Loans by Past Due Status [Abstract]
Total loans		0	0
Residential Real Estate [Member] | Residential Real Estate [Member] | 60 to 89 Days Past Due [Member]
Delinquent and/or Nonaccrual Loans by Past Due Status [Abstract]
Total loans		563	838
Residential Real Estate [Member] | Residential Real Estate [Member] | 90 Days or More Past Due [Member]
Delinquent and/or Nonaccrual Loans by Past Due Status [Abstract]
Total loans		1,232	1,414
Residential Real Estate [Member] | Residential Real Estate [Member] | Current [Member]
Delinquent and/or Nonaccrual Loans by Past Due Status [Abstract]
Total loans		$ 412,015	$ 415,337
Commercial Real Estate Portfolio [Member]
Delinquent and/or Nonaccrual Loans by Past Due Status [Abstract]
Number of loans in the process of foreclosure | Loan		4	3
Loans in the process of foreclosure		$ 1,700	$ 1,600
Commercial Real Estate Portfolio [Member] | Real Estate [Member]
Delinquent and/or Nonaccrual Loans by Past Due Status [Abstract]
Total loans		951,928	936,640
Loans on non-accrual		1,233	1,163
Commercial Real Estate Portfolio [Member] | Real Estate [Member] | Total Past Due [Member]
Delinquent and/or Nonaccrual Loans by Past Due Status [Abstract]
Total loans		1,161	806
Commercial Real Estate Portfolio [Member] | Real Estate [Member] | 30 to 59 Days Past Due [Member]
Delinquent and/or Nonaccrual Loans by Past Due Status [Abstract]
Total loans		0	0
Commercial Real Estate Portfolio [Member] | Real Estate [Member] | 60 to 89 Days Past Due [Member]
Delinquent and/or Nonaccrual Loans by Past Due Status [Abstract]
Total loans		214	0
Commercial Real Estate Portfolio [Member] | Real Estate [Member] | 90 Days or More Past Due [Member]
Delinquent and/or Nonaccrual Loans by Past Due Status [Abstract]
Total loans		947	806
Commercial Real Estate Portfolio [Member] | Real Estate [Member] | Current [Member]
Delinquent and/or Nonaccrual Loans by Past Due Status [Abstract]
Total loans		950,767	935,834
Consumer Portfolio [Member] | Home Equity [Member]
Delinquent and/or Nonaccrual Loans by Past Due Status [Abstract]
Total loans		30,854	29,166
Loans on non-accrual		35	47
Consumer Portfolio [Member] | Home Equity [Member] | Total Past Due [Member]
Delinquent and/or Nonaccrual Loans by Past Due Status [Abstract]
Total loans		45	61
Consumer Portfolio [Member] | Home Equity [Member] | 30 to 59 Days Past Due [Member]
Delinquent and/or Nonaccrual Loans by Past Due Status [Abstract]
Total loans		13	14
Consumer Portfolio [Member] | Home Equity [Member] | 60 to 89 Days Past Due [Member]
Delinquent and/or Nonaccrual Loans by Past Due Status [Abstract]
Total loans		32	0
Consumer Portfolio [Member] | Home Equity [Member] | 90 Days or More Past Due [Member]
Delinquent and/or Nonaccrual Loans by Past Due Status [Abstract]
Total loans		0	47
Consumer Portfolio [Member] | Home Equity [Member] | Current [Member]
Delinquent and/or Nonaccrual Loans by Past Due Status [Abstract]
Total loans		30,809	29,105
Consumer Portfolio [Member] | Consumer [Member]
Delinquent and/or Nonaccrual Loans by Past Due Status [Abstract]
Total loans		4,836	4,771
Loans on non-accrual		0	0
Consumer Portfolio [Member] | Consumer [Member] | Total Past Due [Member]
Delinquent and/or Nonaccrual Loans by Past Due Status [Abstract]
Total loans		34	53
Consumer Portfolio [Member] | Consumer [Member] | 30 to 59 Days Past Due [Member]
Delinquent and/or Nonaccrual Loans by Past Due Status [Abstract]
Total loans		3	47
Consumer Portfolio [Member] | Consumer [Member] | 60 to 89 Days Past Due [Member]
Delinquent and/or Nonaccrual Loans by Past Due Status [Abstract]
Total loans		31	6
Consumer Portfolio [Member] | Consumer [Member] | 90 Days or More Past Due [Member]
Delinquent and/or Nonaccrual Loans by Past Due Status [Abstract]
Total loans		0	0
Consumer Portfolio [Member] | Consumer [Member] | Current [Member]
Delinquent and/or Nonaccrual Loans by Past Due Status [Abstract]
Total loans		4,802	4,718
Commercial Portfolio [Member]
Delinquent and/or Nonaccrual Loans by Past Due Status [Abstract]
Total loans		99,784	111,307
Loans on non-accrual		102	0
Commercial Portfolio [Member] | Total Past Due [Member]
Delinquent and/or Nonaccrual Loans by Past Due Status [Abstract]
Total loans		102	0
Commercial Portfolio [Member] | 30 to 59 Days Past Due [Member]
Delinquent and/or Nonaccrual Loans by Past Due Status [Abstract]
Total loans		0	0
Commercial Portfolio [Member] | 60 to 89 Days Past Due [Member]
Delinquent and/or Nonaccrual Loans by Past Due Status [Abstract]
Total loans		0	0
Commercial Portfolio [Member] | 90 Days or More Past Due [Member]
Delinquent and/or Nonaccrual Loans by Past Due Status [Abstract]
Total loans		102	0
Commercial Portfolio [Member] | Current [Member]
Delinquent and/or Nonaccrual Loans by Past Due Status [Abstract]
Total loans		$ 99,682	$ 111,307

[1] Loan balances exclude accrued interest receivable of $6.5 million and $6.2 million at September 30, 2024 and June 30, 2024, respectively, which is included in accrued interest receivable in the consolidated statement of financial condition.

[2] Loan balances include net deferred fees/costs of ($181,000) and ($42,000) at September 30, 2024 and June 30, 2024, respectively.