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Loans and Allowance for Loan and Lease Losses - Schedule of Recorded Investment and Unpaid Principal Balances for Impaired Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Accounts Notes And Loans Receivable [Line Items]
Loan, Total	$ 1,959,855	$ 1,291,885
Unpaid Principal	1,980,509	1,306,193
Difference	(20,654)	(14,308)
Commercial real estate
Accounts Notes And Loans Receivable [Line Items]
Loan, Total	420,742	291,819
Unpaid Principal	426,843	299,272
Difference	(6,101)	(7,453)
Construction, land development, land
Accounts Notes And Loans Receivable [Line Items]
Loan, Total	101,169	43,876
Unpaid Principal	104,591	45,376
Difference	(3,422)	(1,500)
1-4 family residential properties
Accounts Notes And Loans Receivable [Line Items]
Loan, Total	108,721	78,244
Unpaid Principal	110,729	81,141
Difference	(2,008)	(2,897)
Farmland
Accounts Notes And Loans Receivable [Line Items]
Loan, Total	139,109	33,573
Unpaid Principal	140,117	33,533
Difference	(1,008)	40
Commercial Loans
Accounts Notes And Loans Receivable [Line Items]
Loan, Total	777,806	495,356
Unpaid Principal	784,494	496,719
Difference	(6,688)	(1,363)
Factored receivables
Accounts Notes And Loans Receivable [Line Items]
Loan, Total	213,955	215,088
Unpaid Principal	215,242	216,201
Difference	(1,287)	(1,113)
Consumer
Accounts Notes And Loans Receivable [Line Items]
Loan, Total	25,602	13,050
Unpaid Principal	25,742	13,072
Difference	(140)	(22)
Mortgage warehouse
Accounts Notes And Loans Receivable [Line Items]
Loan, Total	172,751	120,879
Unpaid Principal	$ 172,751	$ 120,879

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- Definition

Loans and leases receivable investment net of unpaid principal.

+ References

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- Definition

Loans​ and​ leases receivable​ unpaid principal.

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- Definition

Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=65884687&loc=d3e4428-111522

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