Fair Value Measurements and Fair Value of Financial Instruments - Fair Value Measurements and Fair Value of Financial Instruments, Assets Measured on Recurring Basis (Details) - Recurring [Member] - USD ($) $ in Thousands	Sep. 30, 2025	Jun. 30, 2025
Assets:
Securities available-for-sale	$ 350,073	$ 356,062
Equity securities	391	402
Interest rate swaps	5,655	4,733
Total	356,119	361,197
Liabilities:
Interest rate swaps	5,655	4,733
Total	5,655	4,733
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Assets:
Securities available-for-sale	0	0
Equity securities	391	402
Interest rate swaps	0	0
Total	391	402
Liabilities:
Interest rate swaps	0	0
Total	0	0
Significant Other Observable Inputs (Level 2) [Member]
Assets:
Securities available-for-sale	350,073	356,062
Equity securities	0	0
Interest rate swaps	5,655	4,733
Total	355,728	360,795
Liabilities:
Interest rate swaps	5,655	4,733
Total	5,655	4,733
Significant Unobservable Inputs (Level 3) [Member]
Assets:
Securities available-for-sale	0	0
Equity securities	0	0
Interest rate swaps	0	0
Total	0	0
Liabilities:
Interest rate swaps	0	0
Total	0	0
U.S. Treasury Securities [Member]
Assets:
Securities available-for-sale	10,539	10,453
U.S. Treasury Securities [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Assets:
Securities available-for-sale	0	0
U.S. Treasury Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Assets:
Securities available-for-sale	10,539	10,453
U.S. Treasury Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Assets:
Securities available-for-sale	0	0
U.S. Government Sponsored Enterprises [Member]
Assets:
Securities available-for-sale	11,752	11,644
U.S. Government Sponsored Enterprises [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Assets:
Securities available-for-sale	0	0
U.S. Government Sponsored Enterprises [Member] | Significant Other Observable Inputs (Level 2) [Member]
Assets:
Securities available-for-sale	11,752	11,644
U.S. Government Sponsored Enterprises [Member] | Significant Unobservable Inputs (Level 3) [Member]
Assets:
Securities available-for-sale	0	0
State and Political Subdivisions [Member]
Assets:
Securities available-for-sale	203,441	209,844
State and Political Subdivisions [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Assets:
Securities available-for-sale	0	0
State and Political Subdivisions [Member] | Significant Other Observable Inputs (Level 2) [Member]
Assets:
Securities available-for-sale	203,441	209,844
State and Political Subdivisions [Member] | Significant Unobservable Inputs (Level 3) [Member]
Assets:
Securities available-for-sale	0	0
Mortgage-backed Securities-Residential [Member]
Assets:
Securities available-for-sale	30,700	31,587
Mortgage-backed Securities-Residential [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Assets:
Securities available-for-sale	0	0
Mortgage-backed Securities-Residential [Member] | Significant Other Observable Inputs (Level 2) [Member]
Assets:
Securities available-for-sale	30,700	31,587
Mortgage-backed Securities-Residential [Member] | Significant Unobservable Inputs (Level 3) [Member]
Assets:
Securities available-for-sale	0	0
Mortgage-backed Securities-Multi-family [Member]
Assets:
Securities available-for-sale	75,536	74,597
Mortgage-backed Securities-Multi-family [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Assets:
Securities available-for-sale	0	0
Mortgage-backed Securities-Multi-family [Member] | Significant Other Observable Inputs (Level 2) [Member]
Assets:
Securities available-for-sale	75,536	74,597
Mortgage-backed Securities-Multi-family [Member] | Significant Unobservable Inputs (Level 3) [Member]
Assets:
Securities available-for-sale	0	0
Corporate Debt Securities [Member]
Assets:
Securities available-for-sale	18,105	17,937
Corporate Debt Securities [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Assets:
Securities available-for-sale	0	0
Corporate Debt Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Assets:
Securities available-for-sale	18,105	17,937
Corporate Debt Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Assets:
Securities available-for-sale	$ 0	$ 0