Fair Value Measurements and Fair Value of Financial Instruments, Assets Measured on Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Jun. 30, 2022
Assets [Abstract]
Securities available-for-sale	$ 316,864	$ 408,062
Equity securities	295	273
Recurring [Member]
Assets [Abstract]
Securities available-for-sale	316,864	408,062
Equity securities	295	273
Total securities measured at fair value	317,159	408,335
Recurring [Member] | U.S. Government Sponsored Enterprises [Member]
Assets [Abstract]
Securities available-for-sale	11,004	11,319
Recurring [Member] | U.S. Treasury Securities [Member]
Assets [Abstract]
Securities available-for-sale	16,665	18,427
Recurring [Member] | State and Political Subdivisions [Member]
Assets [Abstract]
Securities available-for-sale	172,593	248,076
Recurring [Member] | Mortgage-backed Securities-Residential [Member]
Assets [Abstract]
Securities available-for-sale	26,534	29,897
Recurring [Member] | Mortgage-backed Securities-Multi-family [Member]
Assets [Abstract]
Securities available-for-sale	73,613	83,709
Recurring [Member] | Corporate Debt Securities [Member]
Assets [Abstract]
Securities available-for-sale	16,455	16,634
Recurring [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Assets [Abstract]
Securities available-for-sale	0	0
Equity securities	295	273
Total securities measured at fair value	295	273
Recurring [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | U.S. Government Sponsored Enterprises [Member]
Assets [Abstract]
Securities available-for-sale	0	0
Recurring [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | U.S. Treasury Securities [Member]
Assets [Abstract]
Securities available-for-sale	0	0
Recurring [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | State and Political Subdivisions [Member]
Assets [Abstract]
Securities available-for-sale	0	0
Recurring [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Mortgage-backed Securities-Residential [Member]
Assets [Abstract]
Securities available-for-sale	0	0
Recurring [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Mortgage-backed Securities-Multi-family [Member]
Assets [Abstract]
Securities available-for-sale	0	0
Recurring [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Corporate Debt Securities [Member]
Assets [Abstract]
Securities available-for-sale	0	0
Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Assets [Abstract]
Securities available-for-sale	316,864	408,062
Equity securities	0	0
Total securities measured at fair value	316,864	408,062
Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | U.S. Government Sponsored Enterprises [Member]
Assets [Abstract]
Securities available-for-sale	11,004	11,319
Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | U.S. Treasury Securities [Member]
Assets [Abstract]
Securities available-for-sale	16,665	18,427
Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | State and Political Subdivisions [Member]
Assets [Abstract]
Securities available-for-sale	172,593	248,076
Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Mortgage-backed Securities-Residential [Member]
Assets [Abstract]
Securities available-for-sale	26,534	29,897
Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Mortgage-backed Securities-Multi-family [Member]
Assets [Abstract]
Securities available-for-sale	73,613	83,709
Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Corporate Debt Securities [Member]
Assets [Abstract]
Securities available-for-sale	16,455	16,634
Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Assets [Abstract]
Securities available-for-sale	0	0
Equity securities	0	0
Total securities measured at fair value	0	0
Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | U.S. Government Sponsored Enterprises [Member]
Assets [Abstract]
Securities available-for-sale	0	0
Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | U.S. Treasury Securities [Member]
Assets [Abstract]
Securities available-for-sale	0	0
Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | State and Political Subdivisions [Member]
Assets [Abstract]
Securities available-for-sale	0	0
Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Mortgage-backed Securities-Residential [Member]
Assets [Abstract]
Securities available-for-sale	0	0
Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Mortgage-backed Securities-Multi-family [Member]
Assets [Abstract]
Securities available-for-sale	0	0
Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Corporate Debt Securities [Member]
Assets [Abstract]
Securities available-for-sale	$ 0	$ 0