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Derivative Instruments - (Details 1) - Not designated as hedging instruments: - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
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Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016
Derivatives, Fair Value [Line Items] |  |  |  |
Gains (losses) on derivative financial instruments | $ 1,408 | $ (904) | $ (929) | $ (2,431)
Interest rate contracts | Included in interest income on loans |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Gains (losses) on derivative financial instruments | 690 | 593 | 1,369 | 1,126
Interest rate lock commitments | Included in mortgage banking income |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Gains (losses) on derivative financial instruments | (1,538) | (566) | 1,315 | 1,062
Forward commitments | Included in mortgage banking income |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Gains (losses) on derivative financial instruments | $ 2,256 | $ (931) | $ (3,613) | $ (4,619)

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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/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5618551-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (a),(c),(d),(e) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624171-113959 + 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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