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Other Derivatives - Hedging instruments on statements of operations (Details) - Nonoperating Income (Expense) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2021 | Mar. 31, 2020
Interest Rate Products |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amount of Income (Loss) Recognized in Income on Derivative | $ 283 | $ (168)
Other Contracts |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amount of Income (Loss) Recognized in Income on Derivative | 40 | (66)
Mortgage Banking |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amount of Income (Loss) Recognized in Income on Derivative | 2,514 | 663
Not Designated as Hedging Instrument |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amount of Income (Loss) Recognized in Income on Derivative | $ 2,837 | $ 429

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- Definition Amount of gain (loss) from excluded component of derivative hedge, recognized in earnings. Excludes recognition under systematic and rational method. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 20 -Section 45 -Paragraph 1A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121577181&loc=SL110061172-113977 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5624171-113959 + Details
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