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	Mar. 31, 2025	Jun. 30, 2024
Assets:
Securities available-for-sale	$ 355,432	$ 350,001
Equity securities	400	328
Interest rate swaps	2,865	585
Total	358,697	350,914
Liabilities:
Interest rate swaps	2,865	585
Total	2,865	585
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Assets:
Securities available-for-sale	0	0
Equity securities	400	328
Interest rate swaps	0	0
Total	400	328
Liabilities:
Interest rate swaps	0	0
Total	0	0
Significant Other Observable Inputs (Level 2) [Member]
Assets:
Securities available-for-sale	355,432	350,001
Equity securities	0	0
Interest rate swaps	2,865	585
Total	358,297	350,586
Liabilities:
Interest rate swaps	2,865	585
Total	2,865	585
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	10,375	41,195
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	10,375	41,195
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	11,476	10,974
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	11,476	10,974
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	209,166	170,669
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	209,166	170,669
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	32,626	36,575
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	32,626	36,575
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	73,985	72,300
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	73,985	72,300
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	17,804	18,288
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	17,804	18,288
Corporate Debt Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Assets:
Securities available-for-sale	$ 0	$ 0