Securities, Amortized Cost and Fair Value of Securities Available-for-Sale (Details) - USD ($) $ in Thousands		Mar. 31, 2024	Jun. 30, 2023
Available-for-sale debt securities [Abstract]
Amortized cost	[1]	$ 372,186	$ 309,153
Unrealized gains		775	670
Unrealized losses		27,442	28,690
Fair value		345,519	281,133
Accrued interest receivable		4,800	2,900
Allowance for credit loss		0
U.S. Government Sponsored Enterprises [Member]
Available-for-sale debt securities [Abstract]
Amortized cost	[1]	13,045	13,054
Unrealized gains		0	0
Unrealized losses		2,095	2,231
Fair value		10,950	10,823
U.S. Treasury Securities [Member]
Available-for-sale debt securities [Abstract]
Amortized cost	[1]	45,075	18,349
Unrealized gains		0	0
Unrealized losses		1,942	1,849
Fair value		43,133	16,500
State and Political Subdivisions [Member]
Available-for-sale debt securities [Abstract]
Amortized cost	[1]	170,252	137,343
Unrealized gains		725	670
Unrealized losses		1	2
Fair value		170,976	138,011
Mortgage-backed Securities-Residential [Member]
Available-for-sale debt securities [Abstract]
Amortized cost	[1]	33,277	29,586
Unrealized gains		30	0
Unrealized losses		3,929	3,985
Fair value		29,378	25,601
Mortgage-backed Securities-Multi-family [Member]
Available-for-sale debt securities [Abstract]
Amortized cost	[1]	90,692	91,016
Unrealized gains		0	0
Unrealized losses		18,175	18,930
Fair value		72,517	72,086
Corporate Debt Securities [Member]
Available-for-sale debt securities [Abstract]
Amortized cost	[1]	19,845	19,805
Unrealized gains		20	0
Unrealized losses		1,300	1,693
Fair value		$ 18,565	$ 18,112

[1] Amortized cost excludes accrued interest receivable of $4.8 million and $2.9 million at March 31, 2024 and June 30, 2023, respectively, which is included in accrued interest receivable in the consolidated statements of financial condition.