Securities, Amortized Cost and Fair Value of Securities Available-for-Sale (Details) - USD ($) $ in Thousands		Sep. 30, 2024	Jun. 30, 2024
Available-for-sale debt securities [Abstract]
Amortized cost	[1]	$ 383,103	$ 376,179
Unrealized gains		2,105	910
Unrealized losses		20,682	27,088
Fair value		364,526	350,001
Accrued interest receivable		$ 3,600	$ 4,000
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration]		Interest Receivable	Interest Receivable
Allowance for credit loss		$ 0	$ 0
U.S. Treasury Securities [Member]
Available-for-sale debt securities [Abstract]
Amortized cost	[1]	43,072	43,024
Unrealized gains		1	0
Unrealized losses		1,264	1,829
Fair value		41,809	41,195
U.S. Government Sponsored Enterprises [Member]
Available-for-sale debt securities [Abstract]
Amortized cost	[1]	13,039	13,042
Unrealized gains		0	0
Unrealized losses		1,543	2,068
Fair value		11,496	10,974
State and Political Subdivisions [Member]
Available-for-sale debt securities [Abstract]
Amortized cost	[1]	179,586	169,842
Unrealized gains		1,677	828
Unrealized losses		0	1
Fair value		181,263	170,669
Mortgage-backed Securities-Residential [Member]
Available-for-sale debt securities [Abstract]
Amortized cost	[1]	38,866	40,402
Unrealized gains		335	67
Unrealized losses		2,913	3,894
Fair value		36,288	36,575
Mortgage-backed Securities-Multi-family [Member]
Available-for-sale debt securities [Abstract]
Amortized cost	[1]	89,168	90,261
Unrealized gains		0	0
Unrealized losses		14,193	17,961
Fair value		74,975	72,300
Corporate Debt Securities [Member]
Available-for-sale debt securities [Abstract]
Amortized cost	[1]	19,372	19,608
Unrealized gains		92	15
Unrealized losses		769	1,335
Fair value		$ 18,695	$ 18,288

[1] Amortized cost excludes accrued interest receivable of $3.6 million and $4.0 million at September 30, 2024 and June 30, 2024, respectively, which is included in accrued interest receivable in the consolidated statement of financial condition.