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Disclosures about Fair Value of Assets and Liabilities - Additional Information (Details) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2021 | Mar. 31, 2020
Fair Value Disclosures [Abstract] |  |
Increase (decrease) in carrying amount of mortgage servicing rights | $ (236) | $ (322)

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- Definition The increase (decrease) in the fair value of servicing assets that are subsequently measured at fair value. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=116651436&loc=d3e122625-111746 + Details
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