Loans and Allowance for Loan and Lease Losses - Summary of Contractually Past Due and Nonaccrual Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Accounts Notes And Loans Receivable [Line Items]
30-89 Days Past Due	$ 13,891	$ 9,099
Past Due 90 Days or More Still Accruing	2,211	700
Nonaccrual	10,739	16,027
Total Past Due	26,841	25,826
Purchased Credit Impaired Loans
Accounts Notes And Loans Receivable [Line Items]
30-89 Days Past Due		260
Nonaccrual	5,895	6,206
Total Past Due	5,895	6,466
Commercial real estate
Accounts Notes And Loans Receivable [Line Items]
30-89 Days Past Due	224	643
Nonaccrual	1,992	1,995
Total Past Due	2,216	2,638
Construction, land development, land
Accounts Notes And Loans Receivable [Line Items]
30-89 Days Past Due	1,168
Total Past Due	1,168
1-4 family residential properties
Accounts Notes And Loans Receivable [Line Items]
30-89 Days Past Due	310	584
Past Due 90 Days or More Still Accruing		49
Nonaccrual	445	638
Total Past Due	755	1,271
Commercial Loans
Accounts Notes And Loans Receivable [Line Items]
30-89 Days Past Due	4,887	114
Nonaccrual	2,407	7,188
Total Past Due	7,294	7,302
Factored receivables
Accounts Notes And Loans Receivable [Line Items]
30-89 Days Past Due	7,022	7,202
Past Due 90 Days or More Still Accruing	2,211	651
Total Past Due	9,233	7,853
Consumer
Accounts Notes And Loans Receivable [Line Items]
30-89 Days Past Due	280	296
Total Past Due	$ 280	$ 296