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Loans and Allowance for Loan and Lease Losses - Summary of Analysis Performed Risk category Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Accounts Notes And Loans Receivable [Line Items]
Loans	$ 2,295,100	$ 2,027,624
Commercial real estate
Accounts Notes And Loans Receivable [Line Items]
Loans	541,217	442,237
Construction, land development, land
Accounts Notes And Loans Receivable [Line Items]
Loans	120,253	109,812
1-4 family residential properties
Accounts Notes And Loans Receivable [Line Items]
Loans	101,833	104,974
Farmland
Accounts Notes And Loans Receivable [Line Items]
Loans	136,258	141,615
Commercial Loans
Accounts Notes And Loans Receivable [Line Items]
Loans	842,715	778,643
Factored receivables
Accounts Notes And Loans Receivable [Line Items]
Loans	293,633	238,198
Consumer
Accounts Notes And Loans Receivable [Line Items]
Loans	29,497	29,764
Mortgage warehouse
Accounts Notes And Loans Receivable [Line Items]
Loans	229,694	182,381
Purchased Credit Impaired Loans
Accounts Notes And Loans Receivable [Line Items]
Loans	16,243	26,907
Purchased Credit Impaired Loans | Commercial real estate
Accounts Notes And Loans Receivable [Line Items]
Loans	10,552	12,863
Purchased Credit Impaired Loans | Construction, land development, land
Accounts Notes And Loans Receivable [Line Items]
Loans	2,899	3,957
Purchased Credit Impaired Loans | 1-4 family residential properties
Accounts Notes And Loans Receivable [Line Items]
Loans	1,389	2,328
Purchased Credit Impaired Loans | Farmland
Accounts Notes And Loans Receivable [Line Items]
Loans	241	237
Purchased Credit Impaired Loans | Commercial Loans
Accounts Notes And Loans Receivable [Line Items]
Loans	1,162	7,522
Pass
Accounts Notes And Loans Receivable [Line Items]
Loans	2,225,286	1,943,516
Pass | Commercial real estate
Accounts Notes And Loans Receivable [Line Items]
Loans	528,842	422,423
Pass | Construction, land development, land
Accounts Notes And Loans Receivable [Line Items]
Loans	117,220	105,493
Pass | 1-4 family residential properties
Accounts Notes And Loans Receivable [Line Items]
Loans	98,642	101,339
Pass | Farmland
Accounts Notes And Loans Receivable [Line Items]
Loans	128,067	136,474
Pass | Commercial Loans
Accounts Notes And Loans Receivable [Line Items]
Loans	802,068	729,634
Pass | Factored receivables
Accounts Notes And Loans Receivable [Line Items]
Loans	291,367	236,084
Pass | Consumer
Accounts Notes And Loans Receivable [Line Items]
Loans	29,386	29,688
Pass | Mortgage warehouse
Accounts Notes And Loans Receivable [Line Items]
Loans	229,694	182,381
Substandard
Accounts Notes And Loans Receivable [Line Items]
Loans	52,100	56,116
Substandard | Commercial real estate
Accounts Notes And Loans Receivable [Line Items]
Loans	1,823	6,951
Substandard | Construction, land development, land
Accounts Notes And Loans Receivable [Line Items]
Loans	134	362
Substandard | 1-4 family residential properties
Accounts Notes And Loans Receivable [Line Items]
Loans	1,802	1,307
Substandard | Farmland
Accounts Notes And Loans Receivable [Line Items]
Loans	7,950	4,904
Substandard | Commercial Loans
Accounts Notes And Loans Receivable [Line Items]
Loans	39,485	41,487
Substandard | Factored receivables
Accounts Notes And Loans Receivable [Line Items]
Loans	795	1,029
Substandard | Consumer
Accounts Notes And Loans Receivable [Line Items]
Loans	111	76
Doubtful
Accounts Notes And Loans Receivable [Line Items]
Loans	1,471	1,085
Doubtful | Factored receivables
Accounts Notes And Loans Receivable [Line Items]
Loans	$ 1,471	$ 1,085

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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=82891408&loc=d3e4428-111522

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