Securities, Securities, Amortized Cost and Fair Value of Securities Available-for-Sale (Details) $ in Thousands		12 Months Ended
		Jun. 30, 2024 USD ($) Category	Jun. 30, 2023 USD ($)
Securities [Abstract]
Number of categories utilized under risk management approach of diversified investing | Category		3
Available-for-sale debt securities [Abstract]
Amortized cost	[1]	$ 376,179	$ 309,153
Unrealized gains		910	670
Unrealized losses		27,088	28,690
Fair value		350,001	281,133
Accrued interest receivable		$ 4,000	$ 2,900
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration]		Accrued interest receivable	Accrued interest receivable
Allowance for credit loss		$ 0
U.S. Treasury Securities [Member]
Available-for-sale debt securities [Abstract]
Amortized cost	[1]	43,024	$ 18,349
Unrealized gains		0	0
Unrealized losses		1,829	1,849
Fair value		41,195	16,500
U.S. Government Sponsored Enterprises [Member]
Available-for-sale debt securities [Abstract]
Amortized cost	[1]	13,042	13,054
Unrealized gains		0	0
Unrealized losses		2,068	2,231
Fair value		10,974	10,823
State and Political Subdivisions [Member]
Available-for-sale debt securities [Abstract]
Amortized cost	[1]	169,842	137,343
Unrealized gains		828	670
Unrealized losses		1	2
Fair value		170,669	138,011
Mortgage-backed Securities-Residential [Member]
Available-for-sale debt securities [Abstract]
Amortized cost	[1]	40,402	29,586
Unrealized gains		67	0
Unrealized losses		3,894	3,985
Fair value		36,575	25,601
Mortgage-backed Securities-Multi-family [Member]
Available-for-sale debt securities [Abstract]
Amortized cost	[1]	90,261	91,016
Unrealized gains		0	0
Unrealized losses		17,961	18,930
Fair value		72,300	72,086
Corporate Debt Securities [Member]
Available-for-sale debt securities [Abstract]
Amortized cost	[1]	19,608	19,805
Unrealized gains		15	0
Unrealized losses		1,335	1,693
Fair value		$ 18,288	$ 18,112

[1] Amortized cost excludes accrued interest receivable of $4.0 million and $2.9 million at June 30, 2024 and June 30, 2023, respectively, which is included in accrued interest receivable in the consolidated statements of financial condition.