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Variable Interest Entities - Narrative (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Nov. 30, 2017
Variable Interest Entities [Abstract] |  |  |  |
Expenses associated with LIHTC investments accounted for using the equity method | $ 4,100 | $ 1,800 | $ 1,800 |
Business Acquisition [Line Items] |  |  |  |
Variable interest entity, decline in investment balance | 15,300 |  |  |
Variable interest entity, decline in related debt | 15,300 |  |  |
Capital Bank Financial Corporation |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquired junior subordinated debt | 187,169 |  |  |
Junior Subordinated Debt | Capital Bank Financial Corporation |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquired junior subordinated debt |  |  |  | $ 212,400
Debt retired during period | $ 45,400 |  |  |

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- Definition Debt Instrument, Retired During Period + References No definition available. + Details
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- Definition Variable Interest Entities. + References No definition available. + Details
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- Definition Variable Interest Entity, Decrease In Investment Balance + References No definition available. + Details
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- Definition Variable Interest Entity, Decrease In Related Debt + References No definition available. + 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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- Definition Amount of long-term debt due after one year or the normal operating cycle, if longer, assumed at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472 + Details
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- Definition Amount of investment income (loss) of qualified affordable housing project investments accounted for using the equity method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 740 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=114775393&loc=SL49122993-202985 + Details
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- Details
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- Details
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