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Derivative Instruments - Gain (loss) recognized on derivatives instruments (Details) - Not designated as hedging - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018
Gain (loss) recognized on derivative instruments |  |  |  |
Gain (loss) recognized on derivatives instruments | $ 224 | $ 17 | $ 2,374 | $ 13
Interest rate lock commitments | Mortgage banking |  |  |  |
Gain (loss) recognized on derivative instruments |  |  |  |
Gain (loss) recognized on derivatives instruments | (257) | (29) | 2,024 | (11)
Forward loan sales commitments | Mortgage banking |  |  |  |
Gain (loss) recognized on derivative instruments |  |  |  |
Gain (loss) recognized on derivatives instruments | (199) | $ 46 | 454 | $ 24
TBA mortgage backed securities | Mortgage banking |  |  |  |
Gain (loss) recognized on derivative instruments |  |  |  |
Gain (loss) recognized on derivatives instruments | $ 680 |  | $ (104) |

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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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