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Accumulated Other Comprehensive Income (Tables) | 3 Months Ended
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Sep. 30, 2020
Equity [Abstract] |
Components of Accumulated Other Comprehensive Income | The components of accumulated other comprehensive income, included in stockholders’ equity, are as follows:
|  | September 30, 2020 |  |  | June 30, 2020 |
Net unrealized gains on securities available-for-sale |  | $ | 6,806 |  |  | $ | 6,805 |
Net unrealized postretirement health benefit plan obligations |  |  | (924 | ) |  |  | (926 | )
|  |  | 5,882 |  |  |  | 5,879 |
Tax effect |  |  | (1,677 | ) |  |  | (1,676 | )
Total |  | $ | 4,205 |  |  | $ | 4,203 |

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6450520&loc=d3e32583-110901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=121641772&loc=SL7669686-108580 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 45 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900 + Details
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