Loans and Allowance for Loan and Lease Losses - Summary of Individual and Collective Allowance for Loan Losses and Loan Balances by Class (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015	Mar. 31, 2015	Dec. 31, 2014
Financing Receivable Allowance For Credit Losses [Line Items]
Loan Evaluation, Individually	$ 18,630	$ 12,680
Loan Evaluation, Collectively	1,215,104	1,265,974
Loan, Total	1,245,840	1,291,885
ALLL Allocations, Individually	2,921	2,591
ALLL Allocations, Collectively	8,731	9,621
ALLL Allocations, Total ALLL	12,093	12,567	$ 9,286	$ 8,843
Purchase Credit Impaired
Financing Receivable Allowance For Credit Losses [Line Items]
Loan Evaluation, PCI	12,106	13,231
ALLL Allocations, PCI	441	355
Commercial real estate
Financing Receivable Allowance For Credit Losses [Line Items]
Loan Evaluation, Individually	714	724
Loan Evaluation, Collectively	287,658	286,006
Loan, Total	293,485	291,819
ALLL Allocations, Individually	100	100
ALLL Allocations, Collectively	1,078	1,034
ALLL Allocations, Total ALLL	1,619	1,489	1,075	533
Commercial real estate \| Purchase Credit Impaired
Financing Receivable Allowance For Credit Losses [Line Items]
Loan Evaluation, PCI	5,113	5,089
ALLL Allocations, PCI	441	355
Construction, land development, land
Financing Receivable Allowance For Credit Losses [Line Items]
Loan Evaluation, Collectively	40,463	42,499
Loan, Total	41,622	43,876
ALLL Allocations, Collectively	198	367
ALLL Allocations, Total ALLL	198	367	344	333
Construction, land development, land \| Purchase Credit Impaired
Financing Receivable Allowance For Credit Losses [Line Items]
Loan Evaluation, PCI	1,159	1,377
1-4 family residential properties
Financing Receivable Allowance For Credit Losses [Line Items]
Loan Evaluation, Individually	637	618
Loan Evaluation, Collectively	73,595	74,714
Loan, Total	76,973	78,244
ALLL Allocations, Individually	1	1
ALLL Allocations, Collectively	284	273
ALLL Allocations, Total ALLL	285	274	223	215
1-4 family residential properties \| Purchase Credit Impaired
Financing Receivable Allowance For Credit Losses [Line Items]
Loan Evaluation, PCI	2,741	2,912
Farmland
Financing Receivable Allowance For Credit Losses [Line Items]
Loan Evaluation, Collectively	33,250	33,573
Loan, Total	33,250	33,573
ALLL Allocations, Collectively	133	134
ALLL Allocations, Total ALLL	133	134	26	19
Commercial Loans
Financing Receivable Allowance For Credit Losses [Line Items]
Loan Evaluation, Individually	12,302	7,916
Loan Evaluation, Collectively	494,038	483,587
Loan, Total	509,433	495,356
ALLL Allocations, Individually	1,246	796
ALLL Allocations, Collectively	4,085	4,480
ALLL Allocations, Total ALLL	5,331	5,276	3,996	4,003
Commercial Loans \| Purchase Credit Impaired
Financing Receivable Allowance For Credit Losses [Line Items]
Loan Evaluation, PCI	3,093	3,853
Factored receivables
Financing Receivable Allowance For Credit Losses [Line Items]
Loan Evaluation, Individually	4,940	3,422
Loan Evaluation, Collectively	194,592	211,666
Loan, Total	199,532	215,088
ALLL Allocations, Individually	1,574	1,694
ALLL Allocations, Collectively	2,536	2,815
ALLL Allocations, Total ALLL	4,110	4,509	3,380	3,462
Consumer
Financing Receivable Allowance For Credit Losses [Line Items]
Loan Evaluation, Individually	37
Loan Evaluation, Collectively	13,493	13,050
Loan, Total	13,530	13,050
ALLL Allocations, Collectively	222	216
ALLL Allocations, Total ALLL	222	216	84	140
Mortgage warehouse
Financing Receivable Allowance For Credit Losses [Line Items]
Loan Evaluation, Collectively	78,015	120,879
Loan, Total	78,015	120,879
ALLL Allocations, Collectively	195	302
ALLL Allocations, Total ALLL	$ 195	$ 302	$ 158	$ 138

A valuation allowance for financing receivables that are expected to be uncollectible.

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Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

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The balance of financing receivables that were collectively evaluated for impairment.

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The balance of financing receivables that were individually evaluated for impairment.

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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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.

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Net amount of the investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, credit card receivables, notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets. Excludes trade accounts receivable with contractual maturity of one year or less and arose from the sale of goods or services.

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