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Derivative Financial Instruments - Effect of Derivative Instruments on Consolidated Statements of Income Derivative in Fair Value Hedging Relationship (Details) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2020 | Mar. 31, 2019
Interest income - loans | Fair Value Hedging |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amount of Gain (Loss) Recognized on Derivative | $ 0 | $ 0
Interest income - loans | Fair Value Hedging | Interest rate contracts |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amount of Gain (Loss) Recognized on Derivative | (26,330) | (4,051)
Interest income - loans | Fair Value Hedging | Interest Rate Contracts Two |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amount of Gain (Loss) Recognized on Derivative | 26,330 | 4,051
Derivatives not designated as hedging instruments | Other income - gain on sale of loans | Mortgage loan contracts |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Amount of Gain (Loss) Recognized on Derivative | $ 1,043 | $ 257

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- Definition Amount of increase (decrease) in the fair value of derivatives recognized in the income statement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5618551-113959 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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