Loans and Allowance for Loan and Lease Losses - Summary of Information Pertaining to Impaired Loans (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Loans [Line Items]
Recorded Investment, With Valuation Allowance	$ 3,116	$ 1,104
Unpaid Principal, With Valuation Allowance	3,798	1,146
Related Allowance, With Valuation Allowance	1,749	453
Recorded Investment, Without Valuation Allowance	7,904	5,496
Unpaid Principal, Without Valuation Allowance	8,076	5,751
Average Impaired Loans	9,317	3,815	3,815
Interest Recognized	711	37	281
Loans receivable \| PCI Loans
Loans [Line Items]
Recorded Investment, With Valuation Allowance		13
Unpaid Principal, With Valuation Allowance		42
Related Allowance, With Valuation Allowance		7
Average Impaired Loans	7	14	1,988
Interest Recognized		6	260
Loans receivable \| Commercial real estate
Loans [Line Items]
Recorded Investment, Without Valuation Allowance	1,934	114
Unpaid Principal, Without Valuation Allowance	1,960	131
Average Impaired Loans	1,023	201	201
Interest Recognized	213	7	7
Loans receivable \| Construction, land development, land
Loans [Line Items]
Average Impaired Loans	4
Interest Recognized	1
Loans receivable \| 1-4 family residential properties
Loans [Line Items]
Recorded Investment, With Valuation Allowance		114
Unpaid Principal, With Valuation Allowance		127
Related Allowance, With Valuation Allowance		14
Recorded Investment, Without Valuation Allowance	627	157
Unpaid Principal, Without Valuation Allowance	748	166
Average Impaired Loans	613	228
Interest Recognized	195	10
Loans receivable \| Commercial Loans
Loans [Line Items]
Recorded Investment, With Valuation Allowance	1,845	215
Unpaid Principal, With Valuation Allowance	2,527	215
Related Allowance, With Valuation Allowance	716	15
Recorded Investment, Without Valuation Allowance	5,343	5,224
Unpaid Principal, Without Valuation Allowance	5,368	5,454
Average Impaired Loans	6,653	2,740	994
Interest Recognized	290	14	14
Loans receivable \| Factored receivables
Loans [Line Items]
Recorded Investment, With Valuation Allowance	1,271	762
Unpaid Principal, With Valuation Allowance	1,271	762
Related Allowance, With Valuation Allowance	1,033	417
Recorded Investment, Without Valuation Allowance		1
Average Impaired Loans	1,017	632	632
Interest Recognized	$ 12

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Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 15

-Subparagraph (c)(1)

-URI http://asc.fasb.org/extlink&oid=35738203&loc=d3e5212-111524

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 17

-URI http://asc.fasb.org/extlink&oid=35738203&loc=d3e5258-111524

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- Definition

Amount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired.

+ References

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- Definition

Amount of allowance for credit losses related to recorded investment.

+ References

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- Definition

Amount of investment in impaired financing receivables for which there is no related allowance for credit losses.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 14A

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953550-111524

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- Definition

Amount of unpaid principal balance of impaired financing receivables for which there is no related allowance for credit losses.

+ References

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Amount of investment in impaired financing receivables for which there is a related allowance for credit losses.

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- Definition

Unpaid principal balance of impaired financing receivables for which there is a related allowance for credit losses.

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