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Derivative Financial Instruments Fair Value Gains and Losses on Derivative Financial Instruments (Details) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2017 | Mar. 31, 2016
Derivative [Line Items] |  |
Net fair value gains on derivative financial instruments | $ 623 | $ 221
Interest rate lock with customers [Member] |  |
Derivative [Line Items] |  |
Net fair value gains on derivative financial instruments | 845 | 1,232
Forward Commitments [Member] |  |
Derivative [Line Items] |  |
Net fair value gains on derivative financial instruments | (2,379) | (1,106)
Interest Rate Swap with Customer [Member] |  |
Derivative [Line Items] |  |
Net fair value gains on derivative financial instruments | (815) | 29,431
Interest Rate Swap with Counterparty [Member] |  |
Derivative [Line Items] |  |
Net fair value gains on derivative financial instruments | 3,001 | (29,431)
Foreign Exchange Contracts With Customer [Member] |  |
Derivative [Line Items] |  |
Net fair value gains on derivative financial instruments | 8 | 374
Foreign Exchange Contracts With Correspondent Banks [Member] |  |
Derivative [Line Items] |  |
Net fair value gains on derivative financial instruments | $ (37) | $ (279)

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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=64837297&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=64837297&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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