Amount of long-term debt due after one year or the normal operating cycle, if longer, assumed at the acquisition date.

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Gross amount of debt extinguished.

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Amount of investment income (loss) of qualified affordable housing project investments accounted for using the equity method.

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Variable Interest Entities - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Nov. 30, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Expense from affordable housing projects, equity method investments		$ 1,200	$ 300	$ 3,100	$ 1,400
Capital Bank Financial Corporation
Variable Interest Entity [Line Items]
Term borrowings		187,169		$ 187,169
Junior Subordinated Debt \| Capital Bank Financial Corporation
Variable Interest Entity [Line Items]
Term borrowings						$ 212,400
Debt called during period		$ 10,300
Scenario, Forecast \| Junior Subordinated Debt \| Capital Bank Financial Corporation
Variable Interest Entity [Line Items]
Debt called during period	$ 35,100