Business Segment Information - Banking Segment (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Segment Reporting Information [Line Items]
Total interest income	$ 22,118	$ 9,021	$ 63,950	$ 23,788
Total interest expense	1,723us-gaap_InterestExpense	893us-gaap_InterestExpense	4,819us-gaap_InterestExpense	2,463us-gaap_InterestExpense
Net interest income	20,395us-gaap_InterestIncomeExpenseNet	8,128us-gaap_InterestIncomeExpenseNet	59,131us-gaap_InterestIncomeExpenseNet	21,325us-gaap_InterestIncomeExpenseNet
Provision for loan losses	1,375us-gaap_ProvisionForLoanAndLeaseLosses	1,735us-gaap_ProvisionForLoanAndLeaseLosses	4,047us-gaap_ProvisionForLoanAndLeaseLosses	2,355us-gaap_ProvisionForLoanAndLeaseLosses
Net interest income after provision for loan losses	19,020	6,393	55,084	18,970
Noninterest Income	15,804us-gaap_NoninterestIncome	717us-gaap_NoninterestIncome	21,046us-gaap_NoninterestIncome	1,491us-gaap_NoninterestIncome
Gain on branch sale	12,619us-gaap_GainLossOnSaleOfBusiness		12,619us-gaap_GainLossOnSaleOfBusiness
Other noninterest income	3,185us-gaap_NoninterestIncomeOther		8,427us-gaap_NoninterestIncomeOther
Noninterest expense	18,461us-gaap_NoninterestExpense	6,547us-gaap_NoninterestExpense	49,517us-gaap_NoninterestExpense	18,067us-gaap_NoninterestExpense
Net income before income tax	16,363	563	26,613	2,394
Total assets	1,347,798us-gaap_Assets	392,938us-gaap_Assets	1,347,798us-gaap_Assets	392,938us-gaap_Assets	1,288,239us-gaap_Assets
Gross loans	977,139	265,393	977,139	265,393	881,099
Operating Segments \| Factoring
Segment Reporting Information [Line Items]
Total interest income	7,423	4,704	19,165	12,381
Intersegment interest allocations	(990)	(577)	(2,497)	(1,508)
Total interest expense				1
Net interest income	6,433	4,127	16,668	10,872
Provision for loan losses	452	341	1,354	632
Net interest income after provision for loan losses	5,981	3,786	15,314	10,240
Noninterest Income		256		824
Other noninterest income	431		1,218
Intersegment Expense Allocations		14		100
Noninterest expense	4,125	2,454	10,570	6,961
Net income before income tax	2,287	1,574	5,962	4,003
Total assets	170,088	110,571	170,088	110,571
Gross loans	158,129	95,065	158,129	95,065
Operating Segments \| Banking
Segment Reporting Information [Line Items]
Total interest income	14,689	4,290	44,753	11,375
Intersegment interest allocations	990	577	2,497	1,508
Total interest expense	1,312	893	3,590	2,462
Net interest income	14,367	3,974	43,660	10,421
Provision for loan losses	923	1,394	2,693	1,723
Net interest income after provision for loan losses	13,444	2,580	40,967	8,698
Noninterest Income		385		569
Gain on branch sale	12,619		12,619
Other noninterest income	2,345		6,256
Intersegment Expense Allocations		(14)		(100)
Noninterest expense	12,344	3,026	34,234	8,834
Net income before income tax	16,064	(47)	25,608	533
Total assets	1,155,434	243,533	1,155,434	243,533
Gross loans	819,010	170,328	819,010	170,328
Corporate
Segment Reporting Information [Line Items]
Total interest income	6	27	32	32
Total interest expense	411		1,229
Net interest income	(405)	27	(1,197)	32
Net interest income after provision for loan losses	(405)	27	(1,197)	32
Noninterest Income		76		98
Other noninterest income	409		953
Noninterest expense	1,992	1,067	4,713	2,272
Net income before income tax	(1,988)	(964)	(4,957)	(2,142)
Total assets	$ 22,276	$ 38,834	$ 22,276	$ 38,834

Intersegment expense allocations.

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Intersegment interest allocations.

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Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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Gain (loss) from sale or disposal of an organization or integrated set of activities (for example, but not limited to, a partnership or corporation) engaged in providing a product or service in a commercial, industrial, or professional environment.

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Sum of operating profit and nonoperating income or expense before Income or Loss from equity method investments, income taxes, extraordinary items, and noncontrolling interest.

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Represents the total of interest and dividend income, including any amortization and accretion (as applicable) of discounts and premiums, earned from (1) loans and leases whether held-for-sale or held-in-portfolio; (2) investment securities; (3) federal funds sold; (4) securities purchased under agreements to resell; (5) investments in banker's acceptances, commercial paper, or certificates of deposit; (6) dividend income; or (7) other investments not otherwise specified herein.

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Amount of the cost of borrowed funds accounted for as interest expense.

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Amount of interest income or expense, including any amortization and accretion (as applicable) of discounts and premiums, including consideration of the provisions for loan, lease, credit, and other related losses.

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The net amount of operating interest income (expense).

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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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Total aggregate amount of all noninterest expense.

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The total amount of noninterest income which may be derived from: (1) fees and commissions; (2) premiums earned; (3) insurance policy charges; (4) the sale or disposal of assets; and (5) other sources not otherwise specified.

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Represents the total of noninterest income derived from certain activities and assets including (for example): (1) venture capital investments; (2) bank owned life insurance; (3) foreign currency transactions; and (4) mortgage servicing rights.

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Amount of expense related to estimated loss from loan and lease transactions.

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