Securities - Amortized Cost and Fair Value of Securities Available-for-Sale (Details) - USD ($) $ in Thousands		Dec. 31, 2024	Jun. 30, 2024
Debt Securities, Available-for-Sale [Line Items]
Amortized cost	[1]	$ 398,219	$ 376,179
Unrealized gains		1,221	910
Unrealized losses		24,987	27,088
Fair value		374,453	350,001
US Treasury Securities [Member]
Debt Securities, Available-for-Sale [Line Items]
Amortized cost	[1]	18,177	43,024
Unrealized gains		0	0
Unrealized losses		1,250	1,829
Fair value		16,927	41,195
U.S. Government Sponsored Enterprises [Member]
Debt Securities, Available-for-Sale [Line Items]
Amortized cost	[1]	13,036	13,042
Unrealized gains		0	0
Unrealized losses		1,846	2,068
Fair value		11,190	10,974
State and Political Subdivisions [Member]
Debt Securities, Available-for-Sale [Line Items]
Amortized cost	[1]	221,696	169,842
Unrealized gains		1,122	828
Unrealized losses		1	1
Fair value		222,817	170,669
Mortgage-backed Securities-Residential [Member]
Debt Securities, Available-for-Sale [Line Items]
Amortized cost	[1]	36,853	40,402
Unrealized gains		43	67
Unrealized losses		3,815	3,894
Fair value		33,081	36,575
Mortgage-backed Securities-Multi-family [Member]
Debt Securities, Available-for-Sale [Line Items]
Amortized cost	[1]	89,071	90,261
Unrealized gains		0	0
Unrealized losses		17,116	17,961
Fair value		71,955	72,300
Corporate Debt Securities [Member]
Debt Securities, Available-for-Sale [Line Items]
Amortized cost	[1]	19,386	19,608
Unrealized gains		56	15
Unrealized losses		959	1,335
Fair value		$ 18,483	$ 18,288

[1] Amortized cost excludes accrued interest receivable of $4.5 million and $4.0 million at December 31, 2024 and June 30, 2024, respectively, which is included in accrued interest receivable in the consolidated statements of financial condition.