Loans and Allowance for Credit Losses on Loans, Major Loan Segments and Classes (Details) - USD ($) $ in Thousands	Jun. 30, 2024		Jun. 30, 2023		Jun. 30, 2022
Major Loan Segments and Classes [Abstract]
Total gross loans	$ 1,499,473	[1],[2]	$ 1,408,866
Allowance for credit losses on loans	(19,244)	[3]	(21,212)	[3]	$ (22,761)
Net loans receivable	1,480,229		1,387,654
Deferred fees and cost, net	(42)
Accrued interest receivable	$ 6,200		$ 5,500
Financing Receivable, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration]	Accrued interest receivable		Accrued interest receivable
Residential Portfolio [Member] | Residential Real Estate [Member]
Major Loan Segments and Classes [Abstract]
Total gross loans	$ 417,589
Allowance for credit losses on loans	(4,237)		$ (2,794)
Residential Portfolio [Member] | Real Estate [Member]
Major Loan Segments and Classes [Abstract]
Allowance for credit losses on loans			(2,613)		(2,373)
Commercial Real Estate Portfolio [Member] | Real Estate [Member]
Major Loan Segments and Classes [Abstract]
Total gross loans	936,640
Allowance for credit losses on loans	(12,218)		(14,839)
Consumer Portfolio [Member] | Home Equity [Member]
Major Loan Segments and Classes [Abstract]
Total gross loans	29,166
Allowance for credit losses on loans	(212)		(46)		(89)
Consumer Portfolio [Member] | Consumer [Member]
Major Loan Segments and Classes [Abstract]
Total gross loans	4,771
Allowance for credit losses on loans	(500)		(332)		(349)
Commercial Portfolio [Member]
Major Loan Segments and Classes [Abstract]
Total gross loans	111,307
Allowance for credit losses on loans	$ (2,077)		$ (3,201)		$ (2,355)

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

[2] Loan balances include net deferred fees/cost of $(42,000) at June 30, 2024.

[3] Effective July 1, 2023, the allowance calculation is based upon the CECL methodology.  Prior to July 1, 2023, the allowance calculation was based upon the incurred loss methodology.