Fair Value Measurements and Fair Value of Financial Instruments, Assets Measured on Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Jun. 30, 2022
Assets [Abstract]
Securities available-for-sale	$ 335,118	$ 408,062
Equity securities	281	273
Recurring [Member]
Assets [Abstract]
Securities available-for-sale	335,118	408,062
Equity securities	281	273
Total securities measured at fair value	335,399	408,335
Recurring [Member] | U.S. Government Sponsored Enterprises [Member]
Assets [Abstract]
Securities available-for-sale	10,729	11,319
Recurring [Member] | U.S. Treasury Securities [Member]
Assets [Abstract]
Securities available-for-sale	16,106	18,427
Recurring [Member] | State and Political Subdivisions [Member]
Assets [Abstract]
Securities available-for-sale	193,897	248,076
Recurring [Member] | Mortgage-backed Securities-Residential [Member]
Assets [Abstract]
Securities available-for-sale	26,696	29,897
Recurring [Member] | Mortgage-backed Securities-Multi-family [Member]
Assets [Abstract]
Securities available-for-sale	71,631	83,709
Recurring [Member] | Corporate Debt Securities [Member]
Assets [Abstract]
Securities available-for-sale	16,059	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	281	273
Total securities measured at fair value	281	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	335,118	408,062
Equity securities	0	0
Total securities measured at fair value	335,118	408,062
Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | U.S. Government Sponsored Enterprises [Member]
Assets [Abstract]
Securities available-for-sale	10,729	11,319
Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | U.S. Treasury Securities [Member]
Assets [Abstract]
Securities available-for-sale	16,106	18,427
Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | State and Political Subdivisions [Member]
Assets [Abstract]
Securities available-for-sale	193,897	248,076
Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Mortgage-backed Securities-Residential [Member]
Assets [Abstract]
Securities available-for-sale	26,696	29,897
Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Mortgage-backed Securities-Multi-family [Member]
Assets [Abstract]
Securities available-for-sale	71,631	83,709
Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Corporate Debt Securities [Member]
Assets [Abstract]
Securities available-for-sale	16,059	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