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Derivative Instruments - Gain (loss) recognized on derivatives instruments (Details) - Not designated as hedging - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
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Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019
Gain (loss) recognized on derivative instruments |  |  |  |
Gain (loss) recognized on derivatives instruments | $ 2,540 | $ 569 | $ 1,010 | $ 2,150
Interest rate lock commitments | Mortgage banking |  |  |  |
Gain (loss) recognized on derivative instruments |  |  |  |
Gain (loss) recognized on derivatives instruments | 4,352 | 492 | 5,579 | 2,281
Forward loan sales commitments | Mortgage banking |  |  |  |
Gain (loss) recognized on derivative instruments |  |  |  |
Gain (loss) recognized on derivatives instruments | 117 | 407 | 783 | 653
TBA mortgage backed securities | Mortgage banking |  |  |  |
Gain (loss) recognized on derivative instruments |  |  |  |
Gain (loss) recognized on derivatives instruments | $ (1,929) | $ (330) | $ (5,352) | $ (784)

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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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