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Disclosures about Fair Value of Assets - Fair Value Measurements of Assets Recognized on Recurring Basis (Detail) - USD ($) $ in Thousands | Sep. 30, 2021 | Jun. 30, 2021
--- | --- | ---
Available-for-sale securities: |  |
Available-for-sale securities, Fair Value | $ 199,809 | $ 189,891
Mortgage servicing rights | 1,020 | 1,013
US Treasury [Member] |  |
Available-for-sale securities: |  |
Available-for-sale securities, Fair Value | 995 | 996
U.S. Government and Federal Agency and Government Sponsored Enterprises (GSEs) [Member] |  |
Available-for-sale securities: |  |
Available-for-sale securities, Fair Value | 7,991 | 8,039
Mortgage-backed Securities - GSE Residential [Member] |  |
Available-for-sale securities: |  |
Available-for-sale securities, Fair Value | 178,762 | 170,415
Small Business Administration [Member] |  |
Available-for-sale securities: |  |
Available-for-sale securities, Fair Value | 10,810 | 9,190
State and Political Subdivisions [Member] |  |
Available-for-sale securities: |  |
Available-for-sale securities, Fair Value | 1,251 | 1,251
Significant Other Observable Inputs (Level 2) [Member] |  |
Available-for-sale securities: |  |
Mortgage servicing rights | 0 | 0
Significant Other Observable Inputs (Level 2) [Member] | US Treasury [Member] |  |
Available-for-sale securities: |  |
Available-for-sale securities, Fair Value | 995 | 996
Significant Other Observable Inputs (Level 2) [Member] | U.S. Government and Federal Agency and Government Sponsored Enterprises (GSEs) [Member] |  |
Available-for-sale securities: |  |
Available-for-sale securities, Fair Value | 7,991 | 8,039
Significant Other Observable Inputs (Level 2) [Member] | Mortgage-backed Securities - GSE Residential [Member] |  |
Available-for-sale securities: |  |
Available-for-sale securities, Fair Value | 178,762 | 170,415
Significant Other Observable Inputs (Level 2) [Member] | Small Business Administration [Member] |  |
Available-for-sale securities: |  |
Available-for-sale securities, Fair Value | 10,810 | 9,190
Significant Other Observable Inputs (Level 2) [Member] | State and Political Subdivisions [Member] |  |
Available-for-sale securities: |  |
Available-for-sale securities, Fair Value | 1,251 | 1,251
Significant Unobservable Inputs (Level 3) [Member] |  |
Available-for-sale securities: |  |
Mortgage servicing rights | $ 1,020 | $ 1,013

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- Definition Fair value of an asset representing net future revenue from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 45 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6469459&loc=d3e122501-111745 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6469459&loc=d3e122492-111745 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=125521744&loc=d3e122625-111746 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 45 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6469459&loc=d3e122501-111745 + Details
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