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Business Combinations and Divestitures - Summary of Fair Values of the Identifiable Assets Acquired and Liabilities Assumed (Parenthetical) (Details) (Triumph Bancorp Inc)
9 Months Ended
Sep. 30, 2014
Triumph Bancorp Inc
 
Business Acquisition [Line Items]  
Common stock shares issued 1,029,045us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued
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