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Derivative Financial Instruments - Impact of Derivatives on Consolidated Statements of Income (Details) - Interest rate swaps - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017
Trading |  |  |  |
Total | $ (8,623) | $ (3,397) | $ (6,806) | $ (7,567)
Designated as Hedging Instrument | Fair Value Hedges |  |  |  |
Fair Value Hedges |  |  |  |
Hedge ineffectiveness realized gains (losses) recorded in earnings | (2,914) | (3,711) | 2,939 | (7,878)
Realized gains (losses) recorded in interest expense | (2,812) | 2,881 | (3,326) | 7,428
Trading |  |  |  |
Total | (5,726) | (830) | (387) | (450)
Designated as Hedging Instrument | Cash Flow Hedges |  |  |  |
Cash Flow Hedges |  |  |  |
Hedge ineffectiveness gains (losses) recorded in earnings | 65 | (75) | 2,749 | (147)
Realized losses recorded in interest expense | (543) | (2,669) | (2,104) | (6,008)
Trading |  |  |  |
Total | (478) | (2,744) | 645 | (6,155)
Trading |  |  |  |
Trading |  |  |  |
Interest reclassification | (239) | (101) | (129) | (20)
Realized losses recorded in earnings | (2,180) | 278 | (6,935) | (942)
Total | $ (2,419) | $ 177 | $ (7,064) | $ (962)

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- Definition Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net, Hedge Ineffectiveness + References No definition available. + Details
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- Definition Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net, Interest Reclassification + References No definition available. + Details
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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 The net gain (loss) relating to components of the gain (loss) on the cash flow hedging instrument excluded from the assessment of cash flow hedge effectiveness. Recognized in earnings. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (d)(2) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624171-113959 + Details
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- Definition Net gain (loss) relating to components of the gain (loss) on the fair value hedging instrument excluded from the assessment of fair value hedge effectiveness. Recognized in earnings. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624171-113959 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 25 -Section 50 -Paragraph 1 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=109977999&loc=d3e76258-113986 + Details
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