Securities, Amortized Cost and Fair Value of Securities Available-for-Sale (Details) - USD ($) $ in Thousands		Dec. 31, 2023	Jun. 30, 2023
Available-for-sale debt securities [Abstract]
Amortized cost	[1]	$ 332,637	$ 309,153
Unrealized gains		1,140	670
Unrealized losses		25,968	28,690
Fair value		307,809	281,133
Accrued interest receivable		3,600	2,900
Allowance for credit loss		0
U.S. Government Sponsored Enterprises [Member]
Available-for-sale debt securities [Abstract]
Amortized cost	[1]	13,048	13,054
Unrealized gains		0	0
Unrealized losses		1,989	2,231
Fair value		11,059	10,823
U.S. Treasury Securities [Member]
Available-for-sale debt securities [Abstract]
Amortized cost	[1]	18,292	18,349
Unrealized gains		0	0
Unrealized losses		1,575	1,849
Fair value		16,717	16,500
State and Political Subdivisions [Member]
Available-for-sale debt securities [Abstract]
Amortized cost	[1]	162,736	137,343
Unrealized gains		1,099	670
Unrealized losses		1	2
Fair value		163,834	138,011
Mortgage-backed Securities-Residential [Member]
Available-for-sale debt securities [Abstract]
Amortized cost	[1]	27,925	29,586
Unrealized gains		0	0
Unrealized losses		3,540	3,985
Fair value		24,385	25,601
Mortgage-backed Securities-Multi-family [Member]
Available-for-sale debt securities [Abstract]
Amortized cost	[1]	90,805	91,016
Unrealized gains		0	0
Unrealized losses		17,557	18,930
Fair value		73,248	72,086
Corporate Debt Securities [Member]
Available-for-sale debt securities [Abstract]
Amortized cost	[1]	19,831	19,805
Unrealized gains		41	0
Unrealized losses		1,306	1,693
Fair value		$ 18,566	$ 18,112

[1] Amortized cost excludes accrued interest receivable of $3.6 million and $2.9 million at December 31, 2023 and June 30, 2023, respectively, which is included in accrued interest receivable in the consolidated statements of financial condition.