First Eagle Private Credit (NEWS) 10-Q 5 Nov 15 2015 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2015	Nov. 02, 2015
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2015
Document Fiscal Year Focus	2,015
Document Fiscal Period Focus	Q3
Trading Symbol	NEWS
Entity Registrant Name	NewStar Financial, Inc.
Entity Central Index Key	1,373,561
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Common Stock, Share Outstanding		45,882,700

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Assets:
Cash and cash equivalents	$ 57,472	$ 33,033
Restricted cash	140,854	95,411
Cash collateral on deposit with custodian	53,738	38,975
Investments in debt securities, available-for-sale	94,328	46,881
Loans held-for-sale, net	427,418	200,569
Loans and leases, net	2,991,370	2,305,896
Deferred financing costs, net	41,606	26,514
Interest receivable	9,668	7,477
Property and equipment, net	624	660
Deferred income taxes, net	35,627	28,078
Income tax receivable		3,388
Other assets	16,574	24,127
Total assets	3,869,279	2,811,009
Liabilities:
Credit facilities	625,595	487,768
Term debt securitizations	1,890,765	1,193,187
Repurchase agreements	137,640	57,227
Senior notes	300,000
Corporate debt		238,500
Subordinated notes	189,852	156,831
Accrued interest payable	28,261	6,576
Income tax payable	3,352
Other liabilities	33,534	29,923
Total liabilities	$ 3,208,999	$ 2,170,012
Stockholders’ equity:
Preferred stock, par value $0.01 per share (5,000,000 shares authorized; no shares outstanding)
Common stock, par value $0.01 per share: Shares authorized: 145,000,000 in 2015 and 2014; Shares outstanding 45,846,553 in 2015 and 46,620,474 in 2014	$ 458	$ 466
Additional paid-in capital	745,012	718,825
Retained earnings	27,144	14,463
Common stock held in treasury, at cost $0.01 par value; 9,147,127 in 2015 and 7,581,646 in 2014	(109,175)	(92,724)
Accumulated other comprehensive loss, net	(3,159)	(33)
Total stockholders’ equity	660,280	640,997
Total liabilities and stockholders’ equity	$ 3,869,279	$ 2,811,009

Condensed Consolidated Balance3

Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Sep. 30, 2015	Dec. 31, 2014
Statement Of Financial Position [Abstract]
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares outstanding	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	145,000,000	145,000,000
Common stock, shares outstanding	45,846,553	46,620,474
Treasury stock, shares	9,147,127	7,581,646

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Net interest income:
Interest income	$ 54,574	$ 33,907	$ 141,194	$ 100,570
Interest expense	31,345	14,304	84,764	40,673
Net interest income	23,229	19,603	56,430	59,897
Provision for credit losses	4,534	3,369	14,720	21,828
Net interest income after provision for credit losses	18,695	16,234	41,710	38,069
Non-interest income (loss):
Fee income	4,573	740	10,508	1,972
Asset management income	1,019	488	2,954	543
Loss on derivatives	(5)	(10)	(24)	(27)
Gain (loss) on sale of loans, net	360	(23)	314	(189)
Other income (expense), net	(2,455)	2,066	1,295	9,176
Total non-interest income	3,492	3,261	15,047	11,475
Operating expenses:
Compensation and benefits	9,561	7,721	24,004	23,283
General and administrative expenses	3,819	3,260	11,052	11,481
Total operating expenses	13,380	10,981	35,056	34,764
Operating income before income taxes	8,807	8,514	21,701	14,780
Results of Consolidated Variable Interest Entity:
Interest income	54,574	33,907	141,194	100,570
Interest expense	31,345	14,304	84,764	40,673
Operating expenses	13,380	10,981	35,056	34,764
Income before income taxes	8,807	8,514	21,701	15,871
Income tax expense	3,665	3,494	9,020	6,503
Net income	$ 5,142	$ 5,020	$ 12,681	$ 9,368
Basic income per share	$ 0.11	$ 0.10	$ 0.27	$ 0.19
Diluted income per share	$ 0.11	$ 0.10	$ 0.26	$ 0.18
Consolidated Variable Interest Entity [Member]
Net interest income:
Interest income				$ 5,268
Interest expense				2,865
Operating expenses:
Total operating expenses				249
Results of Consolidated Variable Interest Entity:
Interest income				5,268
Interest expense				2,865
Interest expense – Fund membership interest				1,292
Other income				229
Operating expenses				249
Net results from Consolidated Variable Interest Entity				$ 1,091

Condensed Consolidated Stateme5

Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 5,142	$ 5,020	$ 12,681	$ 9,368
Other comprehensive income (loss), net of tax:
Net unrealized securities gains (losses), net of tax expense (benefit) of $(1,782), $(78), $(2,120) and $(54), respectively	(2,583)	(108)	(3,078)	(79)
Net unrealized derivative gains (losses), net of tax expense (benefit) of $(14), $4, $(38) and $0, respectively	(21)	5	(48)	(4)
Other comprehensive income (loss)	(2,604)	(103)	(3,126)	(83)
Comprehensive income	$ 2,538	$ 4,917	$ 9,555	$ 9,285

Condensed Consolidated Stateme6

Condensed Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Statement Of Income And Comprehensive Income [Abstract]
Tax expense (benefit) on unrealized securities gains (losses)	$ (1,782)	$ (78)	$ (2,120)	$ (54)
Tax expense (benefit) on unrealized derivative gains (losses)	$ (14)	$ 4	$ (38)	$ 0

Condensed Consolidated Stateme7

Condensed Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings (Accumulated Deficit) [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Income (Loss), Net [Member]	Retained Earnings of Consolidated VIE [Member]	Common Stockholders' Equity [Member]
Beginning Balance at Dec. 31, 2013		$ 487	$ 655,143	$ 2,624	$ (43,271)	$ 569	$ 658	$ 616,210
Net income	$ 9,368			8,726			642	9,368
Other comprehensive income (loss)	(83)					(83)		(83)
Issuance of restricted stock		1	(1)
Net shares reacquired from employee transactions					(525)			(525)
Tax benefit from vesting of stock awards			134					134
Repurchase of common stock		(16)	5		(21,725)			(21,736)
Exercise of warrants		3	15,244		(14,248)			999
Exercise of common stock options		3	279					282
Tax benefit from exercise of common stock awards			1,062					1,062
Reclassification of VIE Dividend							587	587
Deconsolidation of VIE				1,887			$ (1,887)
Amortization of restricted common stock awards			1,796					1,796
Ending Balance at Sep. 30, 2014		478	673,662	13,237	(79,769)	486		608,094
Beginning Balance at Dec. 31, 2014	640,997	466	718,825	14,463	(92,724)	(33)		640,997
Net income	12,681			12,681				12,681
Other comprehensive income (loss)	(3,126)					(3,126)		(3,126)
Issuance of restricted stock		4	(4)
Net shares reacquired from employee transactions		(1)	1		(597)			(597)
Tax benefit from vesting of stock awards			(163)					(163)
Repurchase of common stock		(12)	12		(15,854)			(15,854)
Issuance of warrants			21,766					21,766
Exercise of common stock options		1	1,574					1,575
Tax benefit from exercise of common stock awards			551					551
Amortization of restricted common stock awards			2,450					2,450
Ending Balance at Sep. 30, 2015	$ 660,280	$ 458	$ 745,012	$ 27,144	$ (109,175)	$ (3,159)		$ 660,280

Condensed Consolidated Stateme8

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Cash flows from operating activities:
Net income	$ 12,681	$ 9,368
Adjustments to reconcile net income to net cash used for operations:
Provision for credit losses	14,720	21,828
Depreciation, amortization and accretion	(6,977)	(9,062)
Amortization of debt issuance costs	14,944	4,796
Equity compensation expense	2,450	1,796
(Gain) loss on sale of loans	(314)	189
Unrealized loss on total return swap	971
Gain on sale of equipment	(471)
Loss on other real estate owned	82
Loss from equity method investments		845
Net change in deferred income taxes	(5,394)	3,551
Loans held-for-sale originated	(490,601)	(169,104)
Proceeds from sale of loans held-for-sale	263,231	137,072
Unrealized loss on loans held-for-sale	506
Net change in interest receivable	(2,191)	2,179
Net change in other assets	6,587	(10,354)
Net change in accrued interest payable	21,685	659
Net change in accounts payable and other liabilities	6,304	5,233
Net cash (used in) provided by operating activities	(161,787)	2,365
Cash flows from investing activities:
Net change in restricted cash	(45,443)	36,115
Net change in loans	(692,212)	37,681
Purchase of debt securities, available-for-sale	(85,020)	(5,000)
Proceeds from debt securities, available-for-sale	33,000	6,000
Proceeds from sale of other real estate owned	3,211
Acquisition of property and equipment	(129)	(59)
Net cash provided by (used in) investing activities	(786,593)	247,443
Cash flows from financing activities:
Proceeds from exercise of stock options, net	1,575	282
Tax benefit from exercise of stock options	551	1,062
Proceeds from exercise of warrants		999
Tax benefit (expense) from vesting of stock awards	(163)	134
Advances on credit facilities	1,934,949	1,026,523
Repayment of borrowings on credit facilities	(1,797,122)	(1,074,333)
Issuance of term debt	824,167	289,500
Borrowings on term debt	43,500	94,100
Repayment of borrowings on term debt	(170,089)	(331,821)
Issuance of senior notes	300,000
Borrowing on subordinated notes	50,000
Borrowings on repurchase agreements	125,012
Repayment of borrowings on repurchase agreements	(44,599)	(10,583)
Repayment of corporate debt	(238,500)
Posting of cash collateral	(14,763)
Payment of deferred financing costs	(25,248)	(4,617)
Purchase of treasury stock	(16,451)	(22,250)
Net cash provided by (used in) financing activities	972,819	(181,598)
Net increase (decrease) in cash during the period	24,439	68,210
Cash and cash equivalents at beginning of period	33,033	43,401
Cash and cash equivalents at end of period	57,472	111,611
Supplemental cash flows information:
Interest paid	63,079	39,581
Taxes paid	7,285	3,664
Increase (decrease) in fair value of investments in debt securities, available for sale	$ (5,193)	(133)
Consolidated Variable Interest Entity [Member]
Adjustments to reconcile net income to net cash used for operations:
Depreciation, amortization and accretion		(315)
Amortization of debt issuance costs		1,244
Net change in interest receivable		1,079
Net change in other assets		946
Net change in accrued interest payable		(172)
Net change in accounts payable and other liabilities		587
Cash flows from investing activities:
Net change in restricted cash		1,950
Net change in loans		171,427
VIE cash dividends		(671)
Cash flows from financing activities:
Repayment of borrowings on credit facilities		(120,344)
Payment of deferred financing costs		(250)
Repayment of borrowings on subordinated debt		(30,000)
Supplemental cash flows information:
Interest paid		4,763
VIE cash distribution		$ 671

Organization

Organization	9 Months Ended
	Sep. 30, 2015
Accounting Policies [Abstract]
Organization	Note 1. Organization NewStar Financial, Inc. is an internally-managed, commercial finance company with specialized lending platforms focused on meeting the complex financing needs of companies and private investors in the middle market. The Company is also a registered investment adviser and provides asset management services to institutional investors through a series of managed credit funds that co-invest in certain types of loans originated by the Company. Through its specialized lending platforms, the Company provides a range of senior secured debt financing options to mid-sized companies to fund working capital, growth strategies, acquisitions and recapitalizations, as well as, purchases of equipment and other capital assets. These lending activities require specialized skills and transaction experience, as well as a significant investment in personnel and operating infrastructure. To meet these demands, our loans and leases are originated directly by teams of credit-trained bankers and experienced marketing officers organized around key industry and market segments. These teams represent specialized lending groups that are supported by centralized credit management and operating platforms, which enables us to leverage common standards, systems, and industry and professional expertise across multiple businesses. The Company directs its marketing and origination efforts to private equity firms, mid-sized companies, corporate executives, banks, real estate investors and a variety of other referral sources and financial intermediaries to develop new customer relationships and source lending opportunities. The Company's origination network is national in scope and focuses on companies operating across a broad range of industry sectors. The Company employs highly experienced bankers, marketing officers and credit professionals to identify and structure new lending opportunities and manage customer relationships. The Company believes that the quality of its professionals, the breadth of their relationships and referral networks, and their ability to develop creative solutions for customers position it to be a valued partner and preferred lender for mid-sized companies and private equity funds with middle market investment strategies. The Company's emphasis on direct origination is an important aspect of its marketing and credit strategy. Its national network is designed around specialized origination channels intended to generate a large set of potential lending opportunities. That allows each lending platform to be highly selective in its credit process and to allocate capital to market segments that we believe represent the most attractive opportunities. The Company's direct origination network also generates proprietary lending opportunities with yield characteristics that we believe would not otherwise be available through intermediaries. In addition, direct origination provides the Company with direct access to management teams and enhances its ability to conduct detailed due diligence and credit analysis of prospective borrowers. It also allows the Company to negotiate transaction terms directly with borrowers and, as a result, advise its customers on financial strategies and capital structures, which it believes benefits its credit performance. The Company typically provides financing commitments to companies in amounts that range in size from $10 million to $50 million. The size of financing commitments depends on various factors, including the type of loan, the credit characteristics of the borrower, the economic characteristics of the loan, and the Company's role in the transaction. The Company also selectively arranges larger transactions that it may retain on its balance sheet or syndicate to other lenders, which may include funds that it manages for third party institutional investors. By syndicating loans to other lenders and the Company's managed funds, it is able to provide larger financing commitments to its customers and generate fee income, while limiting our risk exposure to single borrowers. From time to time, however, the Company's balance sheet exposure to a single borrower may exceed $30 million. NewStar offers a set of credit products and services that have many common attributes, but which are highly specialized by lending group and market segment. Although both the Leveraged Finance and Business Credit lending groups structure loans as revolving credit facilities and term loans, the style of lending and approach to credit management is highly specialized. The Equipment Finance group broadens the Company's product offering to include a range of lease financing options. The operational intensity of each product also varies by lending group. Although, the Company operates as a single segment, it derives revenues from lending activities and asset management services across four specialized lending groups that target market segments in which it believes that it has competitive advantages: · Leveraged Finance, provides senior, secured cash flow loans and, to a lesser extent, first out, second lien and unitranche loans, which are primarily used to finance acquisitions of mid-sized companies with annual cash flow (EBITDA) typically between $10 million and $50 million by private equity investment funds managed by established professional alternative asset managers; · Business Credit, provides senior, secured asset-based loans primarily to fund working capital needs of mid-sized companies with sales revenue typically totaling between $25 million and $500 million; · Real Estate , provides first mortgage debt primarily to finance acquisitions of commercial real estate properties typically valued between $10 million and $50 million by professional commercial real estate investors; · Equipment Finance , provides leases, loans and lease lines to finance equipment purchases and other capital expenditures typically for companies with annual sales of at least $25 million; and · Asset Management , provides opportunities for qualified institutions to invest in credit funds managed by the Company with strategies to co-invest in loans originated by its Leveraged Finance lending group.

Summary of Significant Accounti

Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2015
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Note 2. Summary of Significant Accounting Policies Basis of Presentation These interim condensed consolidated financial statements include the accounts of the Company and its subsidiaries (collectively, “NewStar”) and have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”). All significant intercompany transactions have been eliminated in consolidation. These interim condensed financial statements include adjustments of a normal and recurring nature considered necessary by management to fairly present NewStar’s financial position, results of operations and cash flows. These interim condensed financial statements may not be indicative of financial results for the full year. The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect certain reported amounts and disclosure of contingent assets and liabilities. Actual results could differ from those estimates. The estimates most susceptible to change in the near-term are the Company’s estimates of its (i) allowance for credit losses, (ii) recorded amounts of deferred income taxes, (iii) fair value measurements used to record fair value adjustments to certain financial instruments, (iv) valuation of investments and (v) determination of other than temporary impairments and temporary impairments. The interim condensed consolidated financial statements and notes thereto should be read in conjunction with the Company’s Annual Report on Form 10-K, as amended, for the year ended December 31, 2014. Prior Period Reclassification Certain prior period disclosure amounts have been reclassified to conform to current period presentation. Consolidation On June 26, 2014, the NewStar Arlington Senior Loan Program LLC (the “Arlington Program”) completed a $409.4 million term debt securitization comprised of all of the loans of NewStar Arlington Fund LLC (“Arlington Fund”) as well as a portion of the Company’s loans classified as held-for-sale. A portion of the proceeds from this term debt securitization were used to repay all advances under the Class A Notes and the Class B Notes. Following repayment, the Class A Notes and the Class B Notes were redeemed. The Company’s membership interests in Arlington Fund were also redeemed and new membership interests in the Arlington Program were issued to its equity investors. The Company acts as collateral manager for the Arlington Program. As a result of the repayment of the Company’s advances as the Class B lender under the warehouse facility and the redemption of its membership interests in the Arlington Fund, the Company has no ownership or financial interests in the Arlington Fund or its successors except to the extent that it receives management fees as collateral manager of the Arlington Program. Additionally, the Arlington Program employs an independent investment professional who is responsible for investment decision making on behalf of the program. As a result, the Company deconsolidated the Arlington Fund from its statement of financial position beginning on June 26, 2014. The Company is not the primary beneficiary of the Arlington Program and has not consolidated the Arlington Program’s operating results or statements of financial position as of that date. Recently Issued Accounting Standards In September 2015, the FASB issued ASU 2015-16, Simplifying the Accounting for Measurement-Period Adjustments in Business Combinations (Topic 805) In April 2015, the FASB issued ASU 2015-03, Interest - Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs In February 2015, the FASB issued ASU 2015-02, Consolidation (Topic 810): Amendments to the Consolidation Analysis In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606) 2017.

Loans Held-for-Sale, Loans, Lea

Loans Held-for-Sale, Loans, Leases and Allowance for Credit Losses	9 Months Ended
	Sep. 30, 2015
Receivables [Abstract]
Loans Held-for-Sale, Loans, Leases and Allowance for Credit Losses	Note 3. Loans Held-for-Sale, Loans, Leases and Allowance for Credit Losses Although the Company operates as a single segment, it derives revenues from asset management services and lending activities across four specialized lending groups that target market segments in which it believes it has competitive advantages: · Leveraged Finance, provides senior, secured cash flow loans and, to a lesser extent, first out, second lien and unitranche loans, which are primarily used to finance acquisitions of mid-sized companies by private equity investment funds managed by established professional alternative asset managers; · Business Credit, provides senior, secured asset-based loans primarily to fund working capital needs of mid-sized companies; · Real Estate, provides first mortgage debt primarily to finance acquisitions of commercial real estate properties; · Equipment Finance, provides leases, loans and lease lines to finance equipment purchases and other capital expenditures; and · Asset Management, provides opportunities for qualified institutions to invest in credit funds managed by the Company with strategies to co-invest in loans originated by its Leveraged Finance lending group. Loans classified as held-for-sale consist primarily of loans originated or purchased by the Company and intended to be sold to third parties (including credit funds managed by the Company). At September 30, 2015 loans held-for-sale consisted of $431.8 million of leveraged finance loans. These loans are carried at the lower of either market value or aggregate cost, net of any deferred origination costs or fees. As of September 30, 2015 and December 31, 2014, loans held-for-sale consisted of the following: September 30, 2015 December 31, 2014 ($ in thousands) Leveraged Finance $ 431,811 $ 202,369 Gross loans held-for-sale 431,811 202,369 Deferred loan fees, net (4,393 ) (1,800 ) Total loans held-for-sale, net $ 427,418 $ 200,569 The outstanding balances of certain of these loans are in excess of the Company’s target loan hold sizes. At September 30, 2015, loans held-for-sale include loans with an aggregate outstanding balance of $429.7 million that were intended to be sold to credit funds managed by the Company. As of November 2, 2015, the Company had sold approximately $17.4 million of the loans held-for-sale to credit funds managed by the Company. The Company sold loans with an aggregate outstanding balance of $37.8 million for a net gain of $0.3 million to entities other than credit funds managed by the Company during the nine months ended September 30, 2015. The Company sold loans with an outstanding balance of $17.9 million for a net loss of $0.2 million to entities other than credit funds during the nine months ended September 30, 2014. As of September 30, 2015, and December 31, 2014, loans and leases consisted of the following: September 30, 2015 December 31, 2014 ($ in thousands) Leveraged Finance $ 2,539,875 $ 1,881,277 Business Credit 274,617 286,918 Real Estate 100,590 105,394 Equipment Finance 175,208 96,666 Gross loans and leases 3,090,290 2,370,255 Deferred loan fees, net (45,808 ) (21,376 ) Allowance for loan and lease losses (53,112 ) (42,983 ) Total loans and leases, net $ 2,991,370 $ 2,305,896 The Company internally risk rates loans based on individual credit criteria on at least a quarterly basis. Borrowers provide the Company with financial information on either a quarterly or monthly basis. Loan ratings as well as identification of impaired loans are dynamically updated to reflect changes in borrower condition or profile. A loan is considered to be impaired when it is probable that the Company will be unable to collect all amounts due to it according to the contractual terms of the loan agreement. Impaired loans include all non-accrual loans, loans with partial charge-offs and loans which are troubled debt restructurings (“TDR”). The Company utilizes a number of analytical tools for the purpose of estimating probability of default and loss given default for its four specialized lending groups. The quantitative models employed by the Company in its Leveraged Finance and Equipment Finance businesses utilize Moody’s KMV RiskCalc credit risk model in combination with a proprietary qualitative model, which generates a rating that maps to a probability of default estimate. Real Estate utilizes a proprietary model that has been developed to capture risk characteristics unique to the lending activities in that line of business. The model produces an obligor risk rating which corresponds to a probability of default and also calculates a loss given default. In each case, the probability of default and the loss given default are used to calculate an expected loss for those lending groups. Due to the nature of its borrowers and the structure of its loans, Business Credit utilizes a proprietary model that produces a rating that corresponds to an expected loss, without calculating a probability of default and loss given default. For consolidated variable interest entities for which the Company is providing transitional capital, a qualitative analysis is used to determine expected loss. In each case, the expected loss is the primary component in a formulaic calculation of general reserves attributable to a given loan. Loans and leases which are rated at or better than a specified threshold are typically classified as “Pass”, and loans and leases rated worse than that threshold are typically classified as “Criticized”, a characterization that may apply to impaired loans, including TDR. As of September 30, 2015, $151.5 million of the Company’s loans were classified as “Criticized”, including $150.8 million of the Company’s impaired loans, and $2.9 billion were classified as “Pass”. As of December 31, 2014, $133.2 million of the Company’s loans were classified as “Criticized”, including $121.8 million of the Company’s impaired loans, and $2.2 billion were classified as “Pass”. When the Company rates a loan above a certain risk rating threshold and the loan is deemed to be impaired, the Company will establish a specific allowance, if appropriate, and the loan will be analyzed and may be placed on non-accrual. If the asset deteriorates further, the specific allowance may increase, and ultimately may result in a loss and charge-off. A TDR that performs in accordance with the terms of the restructuring may improve its risk profile over time. While the concessions in terms of pricing or amortization may not have been reversed and further amended to “market” levels, the financial condition of the Borrower may improve over time to the point where the rating improves from the “Criticized” classification that was appropriate immediately prior to, or at, restructuring. As of September 30, 2015, the Company had impaired loans with an aggregate outstanding balance of $201.2 million. Impaired loans with an aggregate outstanding balance of $160.4 million have been restructured and classified as TDR. As of September 30, 2015, the aggregate carrying value of equity investments in certain of the Company’s borrowers in connection with troubled debt restructurings totaled $11.5 million. Impaired loans with an aggregate outstanding balance of $107.7 million were also on non-accrual status. For impaired loans on non-accrual status, the Company’s policy is to reverse the accrued interest previously recognized as interest income subsequent to the last cash receipt in the current year. The recognition of interest income on the loan only resumes when factors indicating doubtful collection no longer exist and the non-accrual loan has been brought current. During the three and nine months ended September 30, 2015, the Company had zero net charge offs and $3.9 million in net charge offs, respectively of outstanding non-accrual loans. During the three and nine months ended September 30, 2015, the Company placed loans with an aggregate outstanding balance of $7.0 million and $29.3 million, respectively, on non-accrual status. During the three and nine months ended September 30, 2015, the Company recorded $1.6 million and $7.1 million, respectively, of net specific provisions for impaired loans. At September 30, 2015, the Company had a $23.8 million specific allowance for impaired loans with an aggregate outstanding balance of $131.3 million. At September 30, 2015, additional funding commitments for impaired loans totaled $10.3 million. The Company’s obligation to fulfill the additional funding commitments on impaired loans is generally contingent on the borrower’s compliance with the terms of the credit agreement and the borrowing base availability for asset-based loans, or if the borrower is not in compliance additional funding commitments may be made at the Company’s discretion. As of September 30, 2015, $20.1 million of loans on non-accrual status were greater than 60 days past due and classified as delinquent by the Company. Included in the $23.8 million specific allowance for impaired loans was $1.7 million related to delinquent loans. As of December 31, 2014, the Company had impaired loans with an aggregate outstanding balance of $217.2 million. Impaired loans with an aggregate outstanding balance of $175.6 million have been restructured and classified as TDR. As of December 31, 2014, the aggregate carrying value of equity investments in certain of the Company’s borrowers in connection with troubled debt restructurings totaled $16.4 million. Impaired loans with an aggregate outstanding balance of $87.8 million were also on non-accrual status. During 2014, the Company charged off $18.8 million of outstanding non-accrual loans. During 2014, the Company placed loans with an aggregate outstanding balance of $43.5 million on non-accrual status and returned loans with an aggregate outstanding balance of $1.9 million to performing status. During 2014, the Company recorded $22.2 million of net specific provisions for impaired loans. At December 31, 2014, the Company had a $20.7 million specific allowance for impaired loans with an aggregate outstanding balance of $103.2 million. At December 31, 2014, additional funding commitments for impaired loans totaled $10.9 million. As of December 31, 2014, $43.6 million of loans on non-accrual status were greater than 60 days past due and classified as delinquent by the Company. Included in the $20.7 million specific allowance for impaired loans was $8.7 million related to delinquent loans. During 2012, as part of the resolution of two impaired commercial real estate loans, the Company took control of the underlying commercial real estate properties. During 2014, the Company sold one of the commercial real estate properties for $9.5 million resulting in a gain on sale of $0.01 million. During the three months ended September 30, 2015, the Company sold the remaining commercial real estate property for $3.0 million resulting in a loss on sale of $0.01 million. A loan is considered impaired when it is probable that a creditor will be unable to collect all amounts due according to the contractual terms of the loan agreement. The measurement of impairment of a loan is based upon (i) the present value of expected future cash flows discounted at the loan’s effective interest rate, (ii) the loan’s observable market price, or (iii) the fair value of the collateral if the loan is collateral dependent, depending on the circumstances and our collection strategy. Impaired loans are identified based on the loan-by-loan risk rating process described above. It is the Company’s policy during the reporting period to record a specific provision for credit losses and/or partial or full charge off for all loans for which we have serious doubts as to the ability of the borrowers to comply with the present loan repayment terms. A summary of impaired loans is as follows: Investment, Net of Charge-offs Investment, Net of Unamortized Discount/Premium Unpaid Principal ($ in thousands) September 30, 2015 Leveraged Finance $ 165,424 $ 159,551 $ 194,871 Business Credit — — — Real Estate 34,964 34,936 38,310 Equipment Finance 847 747 847 Total $ 201,235 $ 195,234 $ 234,028 December 31, 2014 Leveraged Finance $ 164,886 $ 160,223 $ 186,002 Business Credit — — 366 Real Estate 52,309 52,230 55,661 Equipment Finance — — — Total $ 217,195 $ 212,453 $ 242,029 Recorded Investment Related Allowance for Credit Losses Recorded Investment, net, with a Related Allowance for Credit Losses Recorded Investment without a Related Allowance for Credit Losses Recorded Investment, net, without a Related Allowance for Credit Losses ($ in thousands) September 30, 2015 Leveraged Finance $ 103,588 $ 97,743 $ 61,836 $ 61,808 Business Credit — — — — Real Estate 27,704 27,676 7,260 7,260 Equipment Finance — — 847 747 Total $ 131,292 $ 125,419 $ 69,943 $ 69,815 December 31, 2014 Leveraged Finance $ 103,159 $ 98,528 $ 61,727 $ 61,695 Business Credit — — — — Real Estate — — 52,309 52,230 Equipment Finance — — — — Total $ 103,159 $ 98,528 $ 114,036 $ 113,925 During the three months ended September 30, 2015, the Company did not record any charge-offs or recoveries, and during the nine months ended September 30, 2015 the Company recorded net partial charge-offs of $3.9 million. During the three and nine months ended September 30, 2014, the Company recorded net partial charge-offs of $0.6 million and $21.2 million, respectively. The Company’s policy is to record a specific allowance for an impaired loan to cover the identified impairment of that loan. Based on the Company’s experience any potential charge-off of such loan would typically occur in a subsequent period. The Company may record the initial specific allowance related to an impaired loan in the same period as it records a partial charge-off in certain circumstances such as if the terms of a restructured loan are finalized during that period. When a loan is determined to be uncollectible, the specific allowance is charged off, which reduces the gross investment in the loan. While charge-offs typically have no net impact on the carrying value of net loans and leases, charge-offs lower the level of the allowance for loan and lease losses; and, as a result, reduce the percentage of allowance for loans and leases to total loans and leases, and the percentage of allowance for loan and leases losses to non-performing loans. Below is a summary of the Company’s evaluation of its portfolio and allowance for loan and lease losses by impairment methodology: Leveraged Finance Business Credit Real Estate Equipment Finance September 30, 2015 Investment Allowance Investment Allowance Investment Allowance Investment Allowance ($ in thousands) Collectively evaluated (1) $ 2,374,451 $ 26,594 $ 274,617 $ 1,265 $ 65,626 $ 354 $ 174,361 $ 1,101 Individually evaluated (2) 165,424 23,724 — — 34,964 74 847 — Total $ 2,539,875 $ 50,318 $ 274,617 $ 1,265 $ 100,590 $ 428 $ 175,208 $ 1,101 Leveraged Finance Business Credit Real Estate Equipment Finance December 31, 2014 Investment Allowance Investment Allowance Investment Allowance Investment Allowance ($ in thousands) Collectively evaluated (1) $ 1,716,391 $ 20,045 $ 286,918 $ 1,334 $ 53,085 $ 257 $ 96,666 $ 622 Individually evaluated (2) 164,886 20,725 — — 52,309 — — — Total $ 1,881,277 $ 40,770 $ 286,918 $ 1,334 $ 105,394 $ 257 $ 96,666 $ 622 (1) Represents loans and leases collectively evaluated for impairment in accordance with ASC 450-20, Loss Contingencies, (2) Represents loans individually evaluated for impairment in accordance with ASU 310-10, Receivables, Below is a summary of the Company’s investment in nonaccrual loans. Recorded Investment in Nonaccrual Loans September 30, 2015 December ($ in thousands) Leveraged Finance $ 107,658 $ 84,704 Business Credit — — Real Estate — 3,103 Equipment Finance — — Total $ 107,658 $ 87,807 Loans being restructured have typically developed adverse performance trends as a result of internal or external factors, the result of which is an inability to comply with the terms of the applicable credit agreement governing their obligations to the Company. In order to mitigate default risk and/or liquidation, assuming that liquidation proceeds are not viewed as a more favorable outcome to the Company and other lenders, the Company will enter into negotiations with the borrower and its shareholders on the terms of a restructuring. When restructuring a loan, the Company undertakes an extensive diligence process which typically includes (i) construction of a financial model that runs through the tenor of the restructuring term, (ii) meetings with management of the borrower, (iii) engagement of third party consultants and (iv) internal analysis. Once a restructuring proposal is developed, it is subject to approval by both the Company’s Underwriting Committee and the Company’s Investment Committee. Loans will only be removed from TDR classification after a period of performance following the refinancing of outstanding obligations on terms which are determined to be “market” in all material respects, or upon full payoff of the loan. The Company may modify loans that are not determined to be a TDR. Where a loan is modified or restructured but loan terms are considered market and no concessions were given on the loan terms, including price, principal amortization or obligation, or other restrictive covenants, a loan will not be classified as a TDR. The Company has made the following types of concessions in the context of a TDR: Group I: · extension of principal repayment term · principal holidays · interest rate adjustments Group II: · partial forgiveness · conversion of debt to equity A summary of the types of concessions that the Company made with respect to TDRs at September 30, 2015 and December 31, 2014 is provided below: Group I Group II ($ in thousands) September 30, 2015 $ 160,353 $ 123,865 December 31, 2014 $ 175,589 $ 135,748 Note: A loan may be included in both restructuring groups, but not repeatedly within each group. For the nine months ended September 30, 2015, the Company had $4.0 million of partial charge-offs related to loans previously classified as TDR. As of September 30, 2015, the Company had not removed the TDR classification from any loan previously identified as such, but had charged-off, sold and received repayments of outstanding TDRs. The Company measures TDRs similarly to how it measures all loans for impairment. The Company performs a discounted cash flow analysis on cash flow dependent loans and we assess the underlying collateral value less reasonable costs of sale for collateral dependent loans. Management analyzes the projected performance of the borrower to determine if it has the ability to service principal and interest payments based on the terms of the restructuring. Loans will typically not be returned to accrual status until at least six months of contractual payments have been made in a timely manner or the borrower shows significant ability to maintain servicing of the restructured debt. Additionally, at the time of a restructuring and quarterly thereafter, an impairment analysis is undertaken to determine the measurement of specific reserve, if any, on each impaired loan. Below is a summary of the Company’s loans which were classified as TDR. For the Nine Months Ended September 30, 2015 Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Investment in TDR Subsequently Defaulted ($ in thousands) Leveraged Finance $ 13,650 $ 13,650 $ 22,333 Business Credit — — — Real Estate — — — Equipment Finance 922 — — Total $ 14,572 $ 13,650 $ 22,333 For the Year Ended December 31, 2014 Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Investment in TDR Subsequently Defaulted ($ in thousands) Leveraged Finance $ — $ — $ 25,933 Business Credit — — — Real Estate — — — Equipment Finance — — — Total $ — $ — $ 25,933 The following sets forth a breakdown of troubled debt restructurings at September 30, 2015 and December 31, 2014: As of September 30, 2015 Accrual Status For the nine months ($ in thousands) Loan Type Accruing Nonaccrual Impaired Balance Specific Allowance Charged-off Leveraged Finance $ 57,766 $ 94,480 $ 152,246 $ 22,616 $ 4,000 Business Credit — — — — — Real Estate 7,260 — 7,260 — — Equipment Finance 847 — 847 — — Total $ 65,873 $ 94,480 $ 160,353 $ 22,616 $ 4,000 As of December 31, 2014 Accrual Status For the year ($ in thousands) Loan Type Accruing Nonaccrual Impaired Balance Specific Allowance Charged-off Leveraged Finance $ 80,182 $ 70,734 $ 150,916 $ 19,885 $ 18,709 Business Credit — — — — — Real Estate 21,570 3,103 24,673 — — Equipment Finance — — — — — Total $ 101,752 $ 73,837 $ 175,589 $ 19,885 $ 18,709 The Company classifies a loan as delinquent when it is over 60 days past due. An age analysis of the Company’s delinquent receivables is as follows: 60-89 Days Past Due Greater than 90 Days Total Past Due Current Total Loans and Leases Investment > 60 Days & Accruing ($ in thousands) September 30, 2015 Leveraged Finance $ - $ 28,587 $ 28,587 $ 2,511,288 $ 2,539,875 $ 8,530 Business Credit — — — 274,617 274,617 — Real Estate — — — 100,590 100,590 — Equipment Finance — — — 175,208 175,208 — Total $ - $ 28,587 $ 28,587 $ 3,061,703 $ 3,090,290 $ 8,530 60-89 Days Past Due Greater than 90 Days Total Past Due Current Total Loans and Leases Investment in > 60 Days & Accruing ($ in thousands) December 31, 2014 Leveraged Finance $ 25,412 $ 18,151 $ 43,563 $ 1,837,714 $ 1,881,277 $ — Business Credit — — — 286,918 286,918 — Real Estate — — — 105,394 105,394 — Equipment Finance — — — 96,666 96,666 — Total $ 25,412 $ 18,151 $ 43,563 $ 2,326,692 $ 2,370,255 $ — A general allowance is provided for loans and leases that are not impaired. The Company employs a variety of internally developed and third-party modeling and estimation tools for measuring credit risk, which are used in developing an allowance for loan and lease losses on outstanding loans and leases. The Company’s allowance framework addresses economic conditions, capital market liquidity and industry circumstances from both a top-down and bottom-up perspective. The Company considers and evaluates a number of factors, including but not limited to, changes in economic conditions, credit availability, industry, loss emergence period, and multiple obligor concentrations in assessing both probabilities of default and loss severities as part of the general component of the allowance for loan and lease losses. On at least a quarterly basis, loans and leases are internally risk-rated based on individual credit criteria, including loan and lease type, loan and lease structures (including balloon and bullet structures common in the Company’s Leveraged Finance and Real Estate cash flow loans), borrower industry, payment capacity, location and quality of collateral if any (including the Company’s Real Estate loans). Borrowers provide the Company with financial information on either a monthly or quarterly basis. Ratings, corresponding assumed default rates and assumed loss severities are dynamically updated to reflect any changes in borrower condition and/or profile. For Leveraged Finance loans and Equipment Finance loans and leases, the data set used to construct probabilities of default in its allowance for loan losses model, Moody’s CRD Private Firm Database, primarily contains middle market loans that share attributes similar to the Company’s loans. The Company also considers the quality of the loan or lease terms and lender protections in determining a loan loss in the event of default. For Business Credit loans, the Company utilizes a proprietary model to risk rate the loans on a monthly basis. This model captures the impact of changes in industry and economic conditions as well as changes in the quality of the borrower’s collateral and financial performance to assign a final risk rating. The Company has also evaluated historical net loss trends by risk rating from a comprehensive industry database covering more than twenty-five years of experience of the majority of the asset based lenders operating in the United States. Based upon the monthly risk rating from the model, the reserve is adjusted to reflect the historical average for expected loss from the industry database. For Real Estate loans, the Company employs two mechanisms to capture the impact of industry and economic conditions. First, a loan’s risk rating, and thereby its assumed default likelihood, can be adjusted to account for overall commercial real estate market conditions. Second, to the extent that economic or industry trends adversely affect a substandard rated borrower’s loan-to-value ratio enough to impact its repayment ability, the Company applies a stress multiplier to the loan’s probability of default. The multiplier is designed to account for default characteristics that are difficult to quantify when market conditions cause commercial real estate prices to decline. For consolidated VIEs to which the Company is providing transitional capital, we utilize a qualitative analysis which considers the business plans related to the entity, including expected hold periods, the terms of the agreements related to the entity, the Company’s historical credit experience, the credit migration of the entity’s loans in determining expected loss, as well as conditions in the capital markets. If the Company determines that changes in its allowance for credit losses methodology are advisable, as a result of changes in the economic environment or otherwise, the revised allowance methodology may result in higher or lower levels of allowance. Moreover, given uncertain market conditions, actual losses under the Company’s current or any revised allowance methodology may differ materially from the Company’s estimate. Additionally, when determining the amount of the general allowance, the Company supplements the base amount with an environmental reserve amount which is governed by a score card system comprised of ten individually weighted risk factors. The risk factors are designed based on those outlined in the Comptrollers of the Currency’s Allowance for Loan and Lease Losses Handbook. The Company also performs a ratio analysis of comparable money center banks, regional banks and finance companies. While the Company does not rely on this peer group comparison to set the level of allowance for credit losses, it does assist management in identifying market trends and serves as an overall reasonableness check on the allowance for credit losses computation. A summary of the activity in the allowance for credit losses is as follows: Three Months Ended September 30, 2015 Leveraged Finance Business Credit Real Estate Equipment Finance Total ($ in thousands) Balance, beginning of period $ 47,698 $ 1,097 $ 323 $ 829 $ 49,947 Provision for credit losses—general 2,443 168 42 272 2,925 Provision for credit losses—specific 1,550 — 59 — 1,609 Loans charged off, net of recoveries — — — — — Balance, end of period $ 51,691 $ 1,265 $ 424 $ 1,101 $ 54,481 Balance, end of period—specific $ 23,724 $ — $ 74 $ — $ 23,798 Balance, end of period—general $ 27,967 $ 1,265 $ 350 $ 1,101 $ 30,683 Average balance of impaired loans $ 170,933 $ — $ 35,218 $ — $ 206,151 Average net book value of impaired leases $ — $ — $ — $ 884 $ 884 Interest recognized from impaired loans and leases $ 2,672 $ — $ 400 $ 15 $ 3,087 Loans and leases Loans individually evaluated with specific allowance $ 103,588 $ — $ 27,704 $ — $ 131,292 Loans individually evaluated with no specific allowance 61,836 — 7,260 847 69,943 Loans and leases collectively evaluated without specific allowance 2,374,451 274,617 65,626 174,361 2,889,055 Total loans and leases $ 2,539,875 $ 274,617 $ 100,590 $ 175,208 $ 3,090,290 Nine Months Ended September 30, 2015 Leveraged Finance Business Credit Real Estate Equipment Finance Total ($ in thousands) Balance, beginning of period $ 41,480 $ 1,334 $ 257 $ 622 $ 43,693 Provision for credit losses—general 7,143 (69 ) 93 479 7,646 Provision for credit losses—specific 7,000 — 74 — 7,074 Loans charged off, net of recoveries (3,932 ) — — — (3,932 ) Balance, end of period $ 51,691 $ 1,265 $ 424 $ 1,101 $ 54,481 Balance, end of period—specific $ 23,724 $ — $ 74 $ — $ 23,798 Balance, end of period—general $ 27,967 $ 1,265 $ 350 $ 1,101 $ 30,683 Average balance of impaired loans $ 175,518 $ — $ 36,488 $ — $ 212,006 Average net book value of impaired leases $ — $ — $ — $ 909 $ 909 Interest recognized from impaired loans and leases $ 8,326 $ — $ 1,183 $ 30 $ 9,539 Three Months Ended September 30, 2014 Leveraged Finance Business Credit Real Estate Equipment Finance Total ($ in thousands) Balance, beginning of period $ 33,786 $ 1,060 $ 3,634 $ 619 $ 39,099 Provision for credit losses—general 1,506 197 (50 ) (67 ) 1,586 Provision for credit losses—specific 1,791 –– (8 ) — 1,783 Loans charged off, net of recoveries (558 ) –– — — (558 ) Balance, end of period $ 36,525 $ 1,257 $ 3,576 $ 552 $ 41,910 Balance, end of period—specific $ 18,305 200 $ 3,320 $ — $ 21,825 Balance, end of period—general $ 18,220 $ 1,057 $ 256 $ 552 $ 20,085 Average balance of impaired loans $ 180,581 $ 572 $ 56,759 $ — $ 237,912 Interest recognized from impaired loans $ 2,465 $ — $ 561 $ — $ 3,026 Loans and leases Loans individually evaluated with specific allowance $ 106,402 $ 236 $ 30,871 $ — $ 137,509 Loans individually evaluated with no specific allowance 64,948 — 25,673 — 90,621 Loans and leases collectively evaluated without specific allowance 1,521,849 225,414 52,739 75,726 1,875,728 Total loans and leases $ 1,693,199 $ 225,650 $ 109,283 $ 75,726 $ 2,103,858 Nine Months Ended September 30, 2014 Leveraged Finance Business Credit Real Estate Equipment Finance Total ($ in thousands) Balance, beginning of period $ 36,803 $ 973 $ 3,653 $ 425 $ 41,854 Provision for credit losses—general 1,801 284 (120 ) 127 2,092 Provision for credit losses—specific 19,693 — 43 — 19,736 Loans charged off, net of recoveries (21,772 ) — — — (21,772 ) Balance, end of period $ 36,525 $ 1,257 $ 3,576 $ 552 $ 41,910 Average balance of impaired loans $ 177,904 $ 525 $ 57,641 $ — $ 236,070 Interest recognized from impaired loans $ 8,356 $ — $ 1,611 $ — $ 9,967 Included in the allowance for credit losses at September 30, 2015 and December 31, 2014 is an allowance for unfunded commitments of $1.4 million and $0.7 million, respectively, which is recorded as a component of other liabilities on the Company’s consolidated balance sheet with changes recorded in the provision for credit losses on the Company’s consolidated statement of operations. The methodology for determining the allowance for unfunded commitments is consistent with the methodology for determining the allowance for loan and lease losses. During the nine months ended September 30, 2015, the Company recorded a total provision for credit losses of $14.7 million. The Company increased its allowance for credit losses to $54.5 million as of September 30, 2015 from $43.7 million at December 31, 2014 as a result of the increase in “Loans and leases, net” and an increase in the specific allowance for credit losses. The Company had $0.1 million of recoveries of impaired loans with a specific allowance, decreased its general allowance for credit losses ratio (allowance for credit losses divided by outstanding gross loans and leases excluding loans held for sale) by three basis points during the nine months ended September 30, 2015, this is a result of the increased mix of recently originated loans as a percentage of the overall portfolio and recorded new specific provisions for credit losses of $7.1 million. The general allowance for credit losses covers probable incurred losses in the Company’s loan and lease portfolio with respect to loans and leases for which no specific impairment has been identified. When a loan is classified as impaired, the loan is evaluated for a specific allowance and a specific provision may be recorded, thereby removing it from consideration under the general component of the allowance analysis. Loans that are deemed to be uncollectible are charged off and deducted from the allowance, and recoveries on loans previously charged off are netted against loans charged off. A specific provision for credit losses is recorded with respect to impaired loans for which it is probable that the Company will be unable to collect all amounts due in accordance with the contractual terms of the loan agreement for which there is impairment recognized. The outstanding balance of impaired loans, which include all of the outstanding balances of the Company’s delinquent loans and its troubled debt restructuri

Restricted Cash

Restricted Cash	9 Months Ended
	Sep. 30, 2015
Cash And Cash Equivalents [Abstract]
Restricted Cash	Note 4. Restricted Cash Restricted cash as of September 30, 2015 and December 31, 2014 was as follows: September 30, 2015 December 31, 2014 ($ in thousands) Collections on loans pledged to credit facilities $ 59,743 $ 34,508 Principal and interest collections on loans held in trust and prefunding amounts 80,897 60,013 Customer escrow accounts 214 890 Total $ 140,854 $ 95,411 As of September 30, 2015, the Company had the ability to use $15.5 million of restricted cash to fund new or existing loans.

Investments in Debt Securities,

Investments in Debt Securities, Available-for-Sale	9 Months Ended
	Sep. 30, 2015
Investments Debt And Equity Securities [Abstract]
Investments in Debt Securities, Available-for-Sale	Note 5. Investments in Debt Securities, Available-for-Sale Amortized cost of investments in debt securities as of September 30, 2015 and December 31, 2014 was as follows: September 30, 2015 December 31, 2014 ($ in thousands) Investments in debt securities—gross $ 108,318 $ 53,098 Unamortized discount (8,808 ) (6,228 ) Investments in debt securities—amortized cost $ 99,510 $ 46,870 The amortized cost, gross unrealized holding gains, gross unrealized holding losses, and fair value of available-for-sale securities at September 30, 2015 and December 31, 2014 were as follows: Amortized cost Gross unrealized holding gains Gross unrealized holding losses Fair value ($ in thousands) September 30, 2015 Collateralized loan obligations $ 99,510 $ 22 $ (5,204 ) $ 94,328 $ 99,510 $ 22 $ (5,204 ) $ 94,328 Amortized cost Gross unrealized holding gains Gross unrealized holding losses Fair value ($ in thousands) December 31, 2014 Collateralized loan obligations $ 46,870 $ 214 $ (203 ) $ 46,881 $ 46,870 $ 214 $ (203 ) $ 46,881 During the nine months ended September 30, 2015, the Company purchased $85.0 million of debt securities. The Company did not sell any debt securities during the nine months ended September 30, 2015 and 2014. The Company did not record any net “Other-Than-Temporary Impairment” charges during the nine months ended September 30, 2015 and 2014. The following is an analysis of the continuous periods during which the Company has held investment positions which were carried at an unrealized loss as of September 30, 2015 and December 31, 2014: September 30, 2015 Less than 12 Months Greater than or Equal to 12 Months Total ($ in thousands) Number of positions 18 2 20 Fair value $ 82,688 $ 6,558 $ 89,246 Amortized cost 87,703 6,747 94,450 Unrealized loss $ (5,015 ) $ (189 ) $ (5,204 ) December 31, 2014 Less than 12 Months Greater than or Equal to 12 Months Total ($ in thousands) Number of positions 8 — 8 Fair value $ 38,740 $ — $ 38,740 Amortized cost 38,943 — 38,943 Unrealized loss $ (203 ) $ — $ (203 ) As a result of the Company’s evaluation of the securities, management concluded that the unrealized losses at September 30, 2015 and December 31, 2014 were caused by changes in market prices driven by interest rates and credit spreads. The Company’s evaluation of impairment include quotes from third party pricing services, adjustments to prepayment speeds, delinquency, an analysis of expected cash flows, interest rates, market discount rates, other contract terms, and the timing and level of losses on the loans and leases within the underlying trusts. At September 30, 2015, the Company has determined that it is not more likely than not that it will be required to sell the securities before the Company recovers its amortized cost basis in the security. The Company has also determined that there has not been an adverse change in the cash flows expected to be collected. Based upon the Company’s impairment review process, and the Company’s ability and intent to hold these securities until maturity or a recovery of fair value, the decline in the value of these investments is not considered to be “Other Than Temporary.” Maturities of debt securities classified as available-for-sale were as follows at September 30, 2015 and December 31, 2014: September 30, 2015 December 31, 2014 Amortized cost Fair value Amortized cost Fair value ($ in thousands) Available-for-sale: Due one year or less $ — $ — $ — $ — Due after one year through five years — — — — Due after five years through ten years 11,037 10,797 46,870 46,881 Due after ten years through fifteen years 88,473 83,531 — — Total $ 99,510 $ 94,328 $ 46,870 $ 46,881

Borrowings

Borrowings	9 Months Ended
	Sep. 30, 2015
Debt Disclosure [Abstract]
Borrowings	Note 6. Borrowings Credit Facilities As of September 30, 2015 the Company had five credit facilities through certain of its wholly owned subsidiaries: (i) a $475 million credit facility with syndicated lenders agented by Wells Fargo Bank, National Association (“Wells Fargo”) to fund leveraged finance loans, (ii) a $250 million credit facility with Citibank, N.A. (“Citibank”) to fund leveraged finance loans, (iii) a $175 million credit facility with a syndicate of lenders agented by DZ Bank AG Deutsche Zentral-Genossenschaftbank Frankfurt (“DZ Bank”) to fund asset-based loans, (iv) a $165 million credit facility with a syndicate of lenders agented by Wells Fargo to fund asset-based loans, and (v) a $75 million credit facility with Wells Fargo to fund equipment leases and loans. The Company must comply with various covenants under these facilities. The breach of certain of these covenants could result in a termination event and the exercise of remedies if not cured. At September 30, 2015, the Company was in compliance with all such covenants. These covenants are customary and vary depending on the type of facility. These covenants include, but are not limited to, failure to service debt obligations, failure to meet liquidity covenants and tangible net worth covenants, and failure to remain within prescribed facility portfolio delinquency, charge-off levels, and overcollateralization tests. In addition, the Company is required to make termination or make‑whole payments in the event that certain of its existing credit facilities are prepaid. These termination or make-whole payments, if triggered, could be material to the Company individually or in the aggregate, and in the case of certain facilities, could be caused by factors outside of the Company’s control, including as a result of loan prepayment by the borrowers under the loan facilities that collateralize these credit facilities. The Company has a $475.0 million credit facility with syndicated lenders agented by Wells Fargo to fund leveraged finance loans. The credit facility had an outstanding balance of $216.1 million and unamortized deferred financing fees of $6.9 million as of September 30, 2015. On August 10, 2015, the Company entered into an amendment to this facility which, among other thing, increased the commitment amount to $475.0 million and extended the maturity date to August 10, 2020. Interest on this facility accrues at a variable rate per annum. The facility provides for a revolving reinvestment period which ends on August 10, 2018 with a two-year amortization period. The Company has a $250.0 million credit facility with Citibank to fund leveraged finance loans. The credit facility had an outstanding balance of $208.0 million and unamortized deferred financing fees of $1.7 million as of September 30, 2015. Interest on this facility accrues at a variable rate per annum. The facility provides for a revolving reinvestment period which ends on May 5, 2018, with a two-year amortization period. The Company has a $175.0 million credit facility with syndicated lenders agented by DZ Bank that had an outstanding balance of $104.0 million and unamortized deferred financing fees of $1.3 million as of September 30, 2015. On June 19, 2015, the Company entered into an amendment to this facility which, among other things, increased the commitment amount to $175.0 million and extended the maturity date to June 30, 2018. Interest on this facility accrues at a variable rate per annum. As part of the agreement, there is a minimum interest charge of $2.5 million per annum. If the facility is not utilized to cover this minimum requirement, then a make-whole fee is assessed to satisfy the minimum requirement. The Company is permitted to use the proceeds of borrowings under the credit facility to fund advances under asset-based loan commitments. The commitment amount under the credit facility provides for reinvestment until it matures on June 30, 2018 with no amortization period. The Company has a $165.0 million credit facility with syndicated lenders agented by Wells Fargo to fund asset-based loan origination. The credit facility had an outstanding balance of $97.5 million and unamortized deferred financing fees of $0.9 million as of September 30, 2015. On June 19, 2015, the Company entered into an amendment to this facility which, among other things, increased the commitment amount to $165.0 million. The credit facility may be increased to an amount up to $300.0 million subject to lender approval and other customary conditions. Interest on this facility accrues at a variable rate per annum. The credit facility provides for reinvestment until it matures on December 7, 2017 with no amortization period. The Company has a note purchase agreement with Wells Fargo under the terms of which Wells Fargo agreed to provide a $75.0 million credit facility to fund equipment leases and loans. The credit facility had no outstanding balance and unamortized deferred financing fees of $1.0 million as of September 30, 2015. Interest on this facility accrues at a variable rate per annum. On April 10, 2015, the Company entered into an amendment to this facility which, among other things, extended the reinvestment period to April 10, 2017 and the final maturity date to April 10, 2019, and modified certain concentration amounts and specified threshold amounts. Senior notes On April 22, 2015, the Company completed its offering of senior notes consisting of $300.0 million aggregate principal amount of its 7.25% Senior Notes due 2020 (the “2020 Notes”). The Company subsequently repaid in full its corporate credit facility with Fortress Credit Corp. with a portion of the net proceeds from this offering. The 2020 Notes mature on May 1, 2020, and bear interest at a rate of 7.25% per annum, which is payable semi-annually on May 1 and November 1 of each year, beginning November 1, 2015. At any time prior to May 1, 2017, the Company may redeem up to 35% of the aggregate principal amount of the 2020 Notes with the net cash proceeds of certain public equity offerings at a price equal to 107.25% of the aggregate principal amount so redeemed, plus accrued and unpaid interest thereon provided that immediately following the redemption, at least 65% of the 2020 Notes that were originally issued remain outstanding and any such redemption occurs within 180 days following the closing of any such public equity offering. Additionally, at any time prior to May 1, 2017, the Company may redeem some or all of the 2020 Notes at a price equal to 100% of the aggregate principal amount, plus accrued and unpaid interest thereon and a make-whole premium. On or after May 1, 2017, the Company may redeem the 2020 Notes, in whole or in part, at redemption prices specified in the 2020 Notes plus accrued and unpaid interest thereon. In addition, if the Company undergoes a change of control, the Company will be required to make an offer to purchase each holder’s 2020 Notes at a price equal to 101% of the principal amount of the 2020 Notes, plus accrued and unpaid interest. As of September 30, 2015 unamortized deferred financing fees were $6.2 million. Subordinated notes On December 4, 2014, the Company completed the initial closing of an investment of long-term capital from funds sponsored by Franklin Square Capital Partners ("Franklin Square") and sub-advised by GSO Capital Partners. The Franklin Square funds purchased $200.0 million of 10-year subordinated notes (the "Subordinated Notes") that rank junior to the Company's existing and future senior debt, during the three months ended September 30, 2015, the Company has drawn an additional $50 million under these subordinated notes. The Company is required to borrow the remaining $50.0 million of notes in increments $25.0 million by December 4, 2015. The Subordinated Notes were recorded at par less the initial relative fair value of the warrants issued in connection with the investment on December 4, 2014 and January 23, 2015 (see Note 8) which was $43.2 million as of December 31, 2014 and $60.1 million as of September 30, 2015. The debt discount will amortize over the life of the notes and will be recorded as non-cash interest expense as the Subordinated Notes accrete to par value. As of September 30, 2015, unamortized deferred financing fees were $5.7 million. The Subordinated Notes bear interest at 8.25% and include a Payment-in-Kind ("PIK Toggle") feature that allows the Company, at its option, to elect to have interest accrued at a rate of 8.75% added to the principal of the Subordinated Notes instead of paying it in cash. The Subordinated Notes have a ten year term and mature on December 4, 2024. They are callable during the first three years with payment of a make-whole premium. The prepayment premium decreases to 103% and 101% after the third and fourth anniversaries of the closing, respectively. They are callable at par after December 4, 2019. The Subordinated Notes require a mandatory payment at the end of each accrual period, beginning on December 5, 2019. The Company is required to make a cash payment of principal plus accrued interest in an amount required to prevent the Subordinated Notes from being treated as an "Applicable High Yield Discount Obligation" within the meaning of Section 163(i)(1) of the Internal Revenue Code of 1986, as amended. Events of default under the Subordinated Notes include failure to pay interest or principal when due subject to applicable grace periods, material uncured breaches of the terms of the Subordinated Notes, and bankruptcy/insolvency events. Term Debt Securitizations In June 2007, the Company completed a term debt securitization transaction. In conjunction with this transaction the Company established a separate single-purpose bankruptcy-remote subsidiary, NewStar Commercial Loan Trust 2007-1 (the “2007-1 CLO Trust”) and sold and contributed $600.0 million in loans and investments (including unfunded commitments), or portions thereof, to the 2007-1 CLO Trust. The Company remains the servicer of the loans. Simultaneously with the initial sale and contribution, the 2007-1 CLO Trust issued $546.0 million of notes to institutional investors. The Company retained $54.0 million, comprising 100% of the 2007-1 CLO Trust’s trust certificates. At September 30, 2015, the $185.3 million of outstanding drawn notes were collateralized by the specific loans and investments, principal collection account cash and principal payment receivables totaling $239.3 million. The 2007-1 CLO Trust permitted reinvestment of collateral principal repayments for a six-year period which ended in May 2013. During 2012, the Company purchased $0.2 million of the 2007-1 CLO Trust’s Class C notes. During 2010, the Company purchased $5.0 million of the 2007-1 CLO Trust’s Class D notes. During 2009, the Company purchased $1.0 million of the 2007-1 CLO Trust’s Class D notes. The Company receives a loan collateral management fee and excess interest spread. The Company also receives payments with respect to the classes of notes it owns in accordance with the transaction documents. The Company expects to receive a principal distribution as owner of the trust certificates when the term debt is retired. If loan collateral in the 2007-1 CLO Trust is in default under the terms of the indenture, the excess interest spread from the 2007-1 CLO Trust would not be distributed until the undistributed cash plus recoveries equals the outstanding balance of the defaulted loan or if the Company elected to remove the defaulted collateral. The following table sets forth selected information with respect to the 2007-1 CLO Trust: Notes originally issued Outstanding balance September 30, 2015 Interest rate Legal final maturity Ratings (S&P/Moody’s/ Fitch)(1) ($ in thousands) 2007-1 CLO Trust Class A-1 $ 336,500 $ 62,346 Libor+0.24% September 30, 2022 AAA/Aaa/AAA Class A-2 100,000 19,612 Libor+0.26% September 30, 2022 AAA/Aaa/AAA Class B 24,000 24,000 Libor+0.55% September 30, 2022 AA+/Aa1/AA Class C 58,500 58,293 Libor+1.30% September 30, 2022 A-/A2/A Class D 27,000 21,000 Libor+2.30% September BBB-/Baa2/BBB+ $ 546,000 $ 185,251 (1) These ratings were initially given in June 2007, are unaudited and are subject to change from time to time. On December 18, 2012, the Company completed a term debt securitization transaction. In conjunction with this transaction the Company established a separate single-purpose bankruptcy-remote subsidiary, NewStar Commercial Loan Funding 2012-2 LLC (the “2012-2 CLO”) and sold and contributed $325.9 million in loans and investments (including unfunded commitments), or portions thereof, to the 2012-2 CLO. The Company remains the servicer of the loans. Simultaneously with the initial sale and contribution, the 2012-2 CLO issued $263.3 million of notes to institutional investors. The Company retained $62.6 million, comprising 100% of the 2012-2 CLO’s membership interests, Class E notes, Class F notes, and subordinated notes. On June 12, 2015, the Company sold 100% of the 2012-2 CLO’s Class E Notes totaling $16.3 million to institutional investors. At September 30, 2015, the $279.6 million of outstanding drawn notes were collateralized by the specific loans and investments, principal collection account cash and principal payment receivables totaling $325.9 million. At September 30, 2015, deferred financing fees were $1.6 million. The 2012-2 CLO permits reinvestment of collateral principal repayments for a three-year period ending in January 2016. Should the Company determine that reinvestment of collateral principal repayments are impractical in light of market conditions or if collateral principal repayments are not reinvested within a prescribed timeframe, such funds may be used to repay the outstanding notes. The Company receives a loan collateral management fee and excess interest spread. The Company also receives payments with respect to the classes of notes it owns in accordance with the transaction documents. The Company expects to receive a principal distribution as owner of the membership interests when the term debt is retired. If loan collateral in the 2012-2 CLO is in default under the terms of the indenture, the excess interest spread from the 2012-2 CLO may not be distributed if the overcollateralization ratio, or other collateral quality tests, are not satisfied. The following table sets forth selected information with respect to the 2012-2 CLO: Notes originally issued Outstanding balance September 30, 2015 Interest rate Legal final maturity Ratings (Moody’s/ S&P)(1) ($ in thousands) 2012-2 CLO Class A $ 190,700 $ 190,700 Libor+1.90% January Aaa/AAA Class B 26,000 26,000 Libor+3.25% January 20, 2023 Aa2/N/A Class C 35,200 35,200 Libor+4.25% January 20, 2023 A2/N/A Class D 11,400 11,400 Libor+6.25% January 20, 2023 Baa2/N/A Class E 16,300 16,300 Libor+6.75% January 20, 2023 Ba1/N/A $ 279,600 $ 279,600 (1) These ratings were initially given in December 2012, are unaudited and are subject to change from time to time. On September 11, 2013, the Company completed a term debt securitization transaction through its separate single-purpose bankruptcy-remote subsidiary, NewStar Commercial Loan Funding 2013-1 LLC (the “2013-1 CLO”) and sold and contributed $247.6 million in loans and investments (including unfunded commitments), or portions thereof, to the 2013-1 CLO. The Company remains the servicer of the loans. Simultaneously with the initial sale and contribution, the 2013-1 CLO issued $338.6 million of notes to institutional investors. The Company retained $61.4 million, comprising 100% of the 2013-1 CLO’s membership interests, Class F notes, Class G notes, and subordinated notes. At September 30, 2015, the $334.6 million of outstanding drawn notes were collateralized by the specific loans and investments, principal collection account cash and principal payment receivables totaling $396.0 million. At September 30, 2015, deferred financing fees were $3.8 million. The 2013-1 CLO permits reinvestment of collateral principal repayments for a three-year period ending in September 2016. Should the Company determine that reinvestment of collateral principal repayments are impractical in light of market conditions or if collateral principal repayments are not reinvested within a prescribed timeframe, such funds may be used to repay the outstanding notes. The Company receives a loan collateral management fee and excess interest spread. The Company also receives payments with respect to the classes of notes it owns in accordance with the transaction documents. The Company expects to receive a principal distribution as owner of the membership interests when the term debt is retired. If loan collateral in the 2013-1 CLO is in default under the terms of the indenture, the excess interest spread from the 2013-1 CLO may not be distributed if the overcollateralization ratio, or other collateral quality tests, are not satisfied. The following table sets forth selected information with respect to the 2013-1 CLO: Notes originally issued Outstanding balance September 30, 2015 Interest rate Legal final maturity Ratings (S&P/ Moody’s)(2) ($ in thousands) 2013-1 CLO Class A-T $ 202,600 $ 202,600 Libor+1.65% September AAA/Aaa Class A-R 35,000 31,000 (1) September 20, 2023 AAA/Aaa Class B 38,000 38,000 Libor+2.30% September 20, 2023 AA/N/A Class C 36,000 36,000 Libor+3.80% September 20, 2023 A/N/A Class D 21,000 21,000 Libor+4.55% September 20, 2023 BBB/N/A Class E 6,000 6,000 Libor+5.30% September 20, 2023 BBB-/N/A $ 338,600 $ 334,600 (1) Class A-R Notes accrue interest at the Class A-R CP Rate so long as they are held by a CP Conduit, and otherwise will accrue interest at the Class A-R LIBOR Rate or, in certain circumstances, the Class A-R Base Rate, but in no event shall interest rate payable pari passu with the Class A-T Notes exceed the Class A-R Waterfall Rate Cap. (2) These ratings were initially given in September 2013, are unaudited and are subject to change from time to time. On April 17, 2014, the Company completed a term debt securitization transaction through its separate single-purpose bankruptcy-remote subsidiary, NewStar Commercial Loan Funding 2014-1 LLC (the “2014-1 CLO”) and sold and contributed $249.6 million in loans and investments (including unfunded commitments), or portions thereof, to the 2014-1 CLO. The Company remains the servicer of the loans. Simultaneously with the initial sale and contribution, the 2014-1 CLO issued $289.5 million of notes to institutional investors. The Company retained $58.9 million, comprising 100% of the 2014-1 CLO’s membership interests, Class E notes, Class F notes, and subordinated notes. At September 30, 2015, the $289.5 million of outstanding drawn notes were collateralized by the specific loans and investments, principal collection account cash and principal payment receivables totaling $348.4 million. At September 30, 2015, deferred financing fees were $2.7 million. The 2014-1 CLO permits reinvestment of collateral principal repayments for a four-year period ending in April 2018. Should the Company determine that reinvestment of collateral principal repayments are impractical in light of market conditions or if collateral principal repayments are not reinvested within a prescribed timeframe, such funds may be used to repay the outstanding notes. The Company receives a loan collateral management fee and excess interest spread. The Company also receives payments with respect to the classes of notes it owns in accordance with the transaction documents. The Company expects to receive a principal distribution as owner of the membership interests when the term debt is retired. If loan collateral in the 2014-1 CLO is in default under the terms of the indenture, the excess interest spread from the 2014-1 CLO may not be distributed if the overcollateralization ratio, or other collateral quality tests, are not satisfied. The following table sets forth selected information with respect to the 2014-1 CLO: Notes originally issued Outstanding balance September 30, 2015 Interest rate Legal final maturity Ratings (Moody’s)(2) ($ in thousands) 2014-1 CLO Class A $ 202,500 $ 202,500 Libor+1.80% April Aaa Class B-1 20,000 20,000 Libor+2.60% April 20, 2025 Aa2 Class B-2 13,250 13,250 (1) April 20, 2025 Aa2 Class C 30,250 30,250 Libor+3.60% April 20, 2025 A2 Class D 23,500 23,500 Libor+4.75% April 20, 2025 Baa3 $ 289,500 $ 289,500 (1) Class B-2 Notes accrue interest at a fixed rate of 4.902%. (2) These ratings were initially given in April 2014, are unaudited and are subject to change from time to time. On March 20, 2015, the Company completed a term debt securitization transaction through its separate single-purpose bankruptcy-remote subsidiary, NewStar Commercial Loan Funding 2015-1 LLC (the “2015-1 CLO”) and sold and contributed $336.3 million in loans and investments (including unfunded commitments), or portions thereof, to the 2015-1 CLO. The Company remains the servicer of the loans. Simultaneously with the initial sale and contribution, the 2015-1 CLO issued $410.3 million of notes to institutional investors. The Company retained $85.8 million, comprising 100% of the 2015-1 CLO’s membership interests and subordinated notes. At September 30, 2015, the $410.3 million of outstanding drawn notes were collateralized by the specific loans and investments, principal collection account cash and principal payment receivables totaling $496.1 million. At September 30, 2015, deferred financing fees were $4.1 million. The 2015-1 CLO permits reinvestment of collateral principal repayments for a four-year period ending in April 2019. Should the Company determine that reinvestment of collateral principal repayments are impractical in light of market conditions or if collateral principal repayments are not reinvested within a prescribed timeframe, such funds may be used to repay the outstanding notes. The Company receives a loan collateral management fee and excess interest spread. The Company also receives payments with respect to the classes of notes it owns in accordance with the transaction documents. The Company expects to receive a principal distribution as owner of the membership interests when the term debt is retired. If loan collateral in the 2015-1 CLO is in default under the terms of the indenture, the excess interest spread from the 2015-1 CLO may not be distributed if the overcollateralization ratio, or other collateral quality tests, are not satisfied. The following table sets forth selected information with respect to the 2015-1 CLO: Notes originally issued Outstanding balance September 30, 2015 Interest rate Legal final maturity Ratings (Moody’s/Fitch)(2) ($ in thousands) 2015-1 CLO Class A-1 $ 253,500 $ 253,500 Libor+1.80% January 20, 2027 Aaa/AAA Class A-2 35,000 35,000 (1) January 20, 2027 Aaa/AAA Class B 50,000 50,000 Libor+2.80% January 20, 2027 Aa2/ N/A Class C 38,500 38,500 Libor+3.85% January 20, 2027 A2/N/A Class D 33,250 33,250 Libor+5.50% January 20, 2027 Baa3/N/A $ 410,250 $ 410,250 (1) Class A-2 Notes accrue interest at a spread over Libor of 1.65% from the closing date to, but excluding March 20, 2017, and 2.00% thereafter. (2) These ratings were initially given in March 2015, are unaudited and are subject to change from time to time. On September 1, 2015, NewStar Equipment Finance I, LLC, a subsidiary of the Company, completed a static asset-backed securitization transaction through its separate single-purpose bankruptcy-remote subsidiary, NewStar Commercial Lease Funding 2015-1 LLC (the “2015-1 ABS”) and sold and contributed $100.1 million in leases and equipment loans (including unfunded commitments), or portions thereof, to the 2015-1 ABS. The Company remains the servicer of the leases and equipment loans. Simultaneously with the initial sale and contribution, the 2015-1 ABS issued $70.0 million of notes to institutional investors. The Company retained all of the 2015-1 ABS’s membership interest and the Class B notes, totaling $40.6 million. At September 30, 2015, the $64.0 million of outstanding drawn notes were secured by cash, leases and equipment loans totaling $104.6 million. At September 30, 2015, deferred financing fees were $1.3 million. The Company receives a collateral management fee and excess interest spread. The Company also receives payments with respect to the classes of notes it owns in accordance with the transaction documents. The Company expects to receive a principal distribution as owner of the membership interests when the term debt is retired. If loan collateral in the 2015-1 ABS is in default under the terms of the indenture, the excess interest spread may not be distributed if the target overcollateralization ratio, or other performance based tests, are not satisfied. The following table sets forth selected information with respect to the 2015-1 ABS: Notes originally issued Outstanding balance September 30, 2015 Interest rate Legal final maturity Ratings (DBRS)(1) ($ in thousands) 2015-1 ABS Class A $ 70,046 63,993 3.27% April 15, 2019 AA $ 70,046 $ 63,993 (1) These ratings were initially given in September 2015, are unaudited and are subject to change from time to time. On September 15, 2015, the Company completed a term debt securitization transaction through its separate single-purpose bankruptcy-remote subsidiary, NewStar Commercial Loan Funding 2015-2 LLC (the “2015-2 CLO”) and sold and contributed $298.4 million in loans and investments (including unfunded commitments), or portions thereof, to the 2015-2 CLO. The Company remains the servicer of the loans. Simultaneously with the initial sale and contribution, the 2015-2 CLO issued $327.8 million of notes to institutional investors. The Company retained $70.1 million, comprising 100% of the 2015-2 CLO’s membership interests and a portion of the Class E notes. At September 30, 2015, the $327.8 million of outstanding drawn notes were collateralized by the specific loans and investments, principal collection account cash and principal payment receivables totaling $397.8 million. At September 30, 2015, deferred financing fees were $4.1 million. The 2015-2 CLO permits reinvestment of collateral principal repayments for a four-year period ending in August 2019. Should the Company determine that reinvestment of collateral principal repayments are impractical in light of market conditions or if collateral principal repayments are not reinvested within a prescribed timeframe, such funds may be used to repay the outstanding notes. The Company receives a loan collateral management fee and excess interest spread. The Company also receives payments with respect to the classes of notes it owns in accordance with the transaction documents. The Company expects to receive a principal distribution as owner of the membership interests when the term debt is retired. If loan collateral in the 2015-2 CLO is in default under the terms of the indenture, the excess interest spread from the 2015-2 CLO may not be distributed if the overcollateralization ratio, or other collateral quality tests, are not satisfied. The following table sets forth selected information with respect to the 2015-2 CLO: Notes originally issued Outstanding balance September 30, 2015 Interest rate Legal final maturity Ratings (Moody’s/Fitch)(2) ($ in thousands) 2015-2 CLO Class A-1 $ 205,000 $ 205,000 Libor+2.00% August 25, 2027 Aaa/AAA Class A-2 23,000 23,000 (1) August 25, 2027 Aaa/AAA Class B 40,000 40,000 Libor+2.90% August 25, 2027 Aa2/ N/A Class C 26,250 26,250 Libor+3.95% August 25, 2027 A2/N/A Class D 28,500 28,500 Libor+5.25% August 25, 2027 Baa3/N/A Class E 5,000 5,000 Libor+7.50% August 25, 2027 Ba3/N/A $ 327,750 $ 327,750 (1) Class A-2 Notes accrue interest at a fixed rate of 3.461%. (2) These ratings were initially given in August 2015, are unaudited and are subject to change from time to time. Corporate Credit Facility On January 5, 2010, the Company entered into a note agreement with Fortress Credit Corp., which was subsequently amended on August 31, 2010, January 27, 2012, November 5, 2012, and December 4, 2012. The agreement was amended and restated on May 13, 2013 and further amended on June 3, 2013. The credit facility, as amended, consisted of a $238.5 million term note with Fortress Credit Corp. as agent, which consisted of the existing outstanding balance of $100.0 million (the “Existing Funding”), an initial funding of $98.5 million (the “Initial Funding”), and three subsequent borrowings, of $5.0 million (the “Delay Draw Term A”), $25.0 million (the “Delay Draw Term B”) and the $10.0 million Term C Loan. On April 22, 2015, the Company repaid in full the term note with Fortress Credit Corp.

Repurchase Agreements

Repurchase Agreements	9 Months Ended
	Sep. 30, 2015
Banking And Thrift [Abstract]
Repurchase Agreements	Note 7. Repurchase Agreements Loans sold under agreements to repurchase Three Months Ended September 30, 2015 Year Ended December 31, 2014 ($ in thousands) Outstanding at end of period $ 137,640 $ 57,227 Weighted average rate at end of period 3.56 % 5.16 % On June 7, 2011, the Company entered into a five-year, $68.0 million financing arrangement with Macquarie Bank Limited backed primarily by a portfolio of commercial mortgage loans previously originated by the Company. The financing was structured as a master repurchase agreement under which the Company sold the portfolio of commercial mortgage loans to Macquarie for an aggregate purchase price of $68.0 million. The Company also agreed to repurchase the commercial mortgage loans from time to time (including a minimum quarterly amount), and agreed to repurchase all of the commercial mortgage loans by June 7, 2016. Upon the repurchase of a commercial mortgage loan, the Company is obligated to repay the principal amount related to such mortgage loan plus accrued interest (at a rate based on LIBOR plus a margin) to the date of repurchase. The Company will continue to service the commercial mortgage loans. On October 2, 2013, the Company entered into an amendment to this financing arrangement which, among other things, extended the date it had agreed to repurchase all of the commercial mortgage loans by one year to June 7, 2017, provided for $25.5 million of additional advances for existing eligible assets owned by the Company, allowed for the advance of up to $15.0 million to fund an additional commercial mortgage loan, and released $41.1 million of principal payments to the Company as unrestricted cash. The facility accrues interest at a variable rate per annum, which was 5.21% as of September 30, 2015. As of September 30, 2015, unamortized deferred financing fees were $0.6 million and the outstanding balance was $42.4 million. During 2015, the Company made principal payments totaling $14.8 million. The Company has entered into a repurchase transaction with Deutsche Bank AG, pursuant to the terms of a Global Master Repurchase Agreement (2000 version) , dated as of February 13, 2015 between Deutsche Bank AG and NS Bond Funding I LLC (the “Deutsche Bank Repurchase Agreement”). Pursuant to the Deutsche Bank Repurchase Agreement, Deutsche Bank AG will purchase securities and simultaneously agree to sell the securities back to the Company at a specified date. Under the terms of the Deutsche Bank Repurchase Agreement, the Company is required at all times to maintain a level of overcollateralization for the obligations, which is maintained through daily margining. As of September 30, 2015, the outstanding balance was $12.2 million. The Company has made certain representations and warranties and is required to comply with various covenants and requirements customary for financing arrangements of this nature. The Company has entered into a repurchase transaction with Citigroup Global Markets, pursuant to the terms of a Global Master Repurchase Agreement (2000 version) , dated as of March 16, 2015 between Citigroup Global Markets and NS Loan Originator LLC (the “Citigroup Repurchase Agreement”). Pursuant to the Citigroup Repurchase Agreement, Citigroup Global Markets will purchase securities and simultaneously agree to sell the securities back to the Company at a specified date. Under the terms of the Citigroup Repurchase Agreement, the Company is required at all times to maintain a level of overcollateralization for the obligations, which is maintained through daily margining. As of September 30, 2015, the outstanding balance was $15.2 million. The Company has made certain representations and warranties and is required to comply with various covenants and requirements customary for financing arrangements of this nature. The Company has entered into a repurchase transaction with JP Morgan Chase Bank pursuant to the terms of a Global Master Repurchase Agreement (2000 version), dated as of April 2, 2015 between JP Morgan Chase Bank and NS Bond Funding II LLC (the “JP Morgan Repurchase Agreement”). Pursuant to the JP Morgan Repurchase Agreement, JP Morgan Chase Bank will purchase securities and simultaneously agree to sell the securities back to the Company at a specified date. Under the terms of the JP Morgan Repurchase Agreement, the Company is required at all times to maintain a level of overcollateralization for the obligations, which is maintained through daily margining. As of September 30, 2015, the outstanding balance was $67.8 million. The Company has made certain representations and warranties and is required to comply with various covenants and requirements customary for financing arrangements of this nature.

Stockholders' Equity

Stockholders' Equity	9 Months Ended
	Sep. 30, 2015
Equity [Abstract]
Stockholders' Equity	Note 8. Stockholders’ Equity Stockholders’ Equity As of September 30, 2015 and December 31, 2014, the Company’s authorized capital consists of preferred and common stock and the following was authorized and outstanding: September 30, 2015 December 31, 2014 Shares authorized Shares outstanding Shares authorized Shares outstanding (In thousands) Preferred stock 5,000 — 5,000 — Common stock 145,000 45,847 145,000 46,620 Preferred Stock Since the completion of the Company’s initial public offering on December 13, 2006, the Company’s authorized capital stock has included 5,000,000 shares of preferred stock with a par value of $0.01 per share, all of which remain undesignated. Common Stock On March 24, 2015, the Company repurchased 1,000,000 shares of its common stock in a privately negotiated transaction with an unaffiliated third party for an aggregate purchase price of $10.3 million. On December 22, 2014, the Company repurchased 1,000,000 shares of its common stock in a privately negotiated transaction with an unaffiliated third party for an aggregate purchase price of $10.2 million. On August 13, 2014, the Company’s Board of Directors authorized the repurchase of up to $10.0 million of the Company’s common stock from time to time on the open market or in privately negotiated transactions. The timing and amount of any shares purchased are determined by the Company’s management based on its evaluation of market conditions and other factors. The Company completed the repurchase program during July 2015. As of September 30, 2015, the Company had repurchased 892,911 shares of its common stock under this program at a weighted average price per share of $11.20. On May 5, 2014, the Company’s Board of Directors authorized the repurchase of up to $20.0 million of the Company’s common stock from time to time on the open market or in privately negotiated transactions. The timing and amount of any shares purchased were determined by the Company’s management based on its evaluation of market conditions and other factors. The Company completed repurchase program during July 2014. Under this stock repurchase program, the Company repurchased 1,519,615 shares of its common stock at a weighted average price per share of $13.13 in the aggregate. Warrants On December 4, 2014, the Company issued warrants to purchase 9.5 million shares of its common stock as part of the strategic relationship with Franklin Square Capital Partners ("Franklin Square"). Each warrant allows the warrant holder to purchase one share of the Company's common stock at a purchase price equal to $12.62 per share. The warrants were deemed to be freestanding and indexed to the Company's common stock. As such they were recorded at relative fair value, with no required subsequent re-measurement. The warrants expire on December 4, 2024. On January 23, 2015, the Company completed its issuance of warrants as part of the strategic relationship with Franklin Square. The Company issued the second tranche of warrants to purchase 2.5 million shares of its common stock subject to the same terms as the warrants that were issued on December 4, 2014. Restricted Stock During the nine months ended September 30, 2015, the Company issued 355,876 shares of restricted stock to certain employees of the Company pursuant to the Company’s 2006 Incentive Plan, as amended and 51,352 shares of restricted stock to non-employee members of the Board of Directors. The fair value of the shares of restricted stock is equal to the closing price of the Company’s stock on the date of issuance. The shares of restricted stock issued to employees of the Company vest in three equal installments on each of the first three anniversaries of the date of grant. The shares of restricted stock issued to non-employee members of the Board of Directors vest on the first anniversary of the date of grant. Restricted stock activity for the nine months ended September 30, 2015 was as follows: Shares Grant-date fair value ($ in thousands) Non-vested as of December 31, 2014 315,338 $ 4,091 Granted 407,228 4,322 Vested (218,999 ) (2,700 ) Forfeited (2,213 ) (27 ) Non-vested as of September 30, 2015 501,354 $ 5,686 The Company’s compensation expense related to restricted stock was $0.8 million and $2.5 million, respectively, for the three and nine months ended September 30, 2015 and $0.6 million and $1.8 million, respectively, for the three and nine months ended September 30, 2014. The unrecognized compensation cost of $3.1 million at September 30, 2015 is expected to be recognized over the next three years. Stock Options Under the Company’s 2006 Incentive Plan, the Company’s compensation committee may grant options to purchase shares of common stock. Stock options may either be incentive stock options (“ISOs”) or non-qualified stock options. ISOs may only be granted to officers and employees. The compensation committee will, with regard to each stock option, determine the number of shares subject to the stock option, the manner and time of exercise, vesting, and the exercise price, which will not be less than 100% of the fair market value of the common stock on the date of the grant. The shares of common stock issuable upon exercise of options or other awards or upon grant of any other award may be either previously authorized but unissued shares or treasury shares. Stock option activity for the nine months ended September 30, 2015 was as follows: Options Outstanding as of December 31, 2014 4,628,439 Granted — Exercised (384,332 ) Forfeited (17,815 ) Outstanding as of September 30, 2015 4,226,292 Vested as of September 30, 2015 4,226,292 Exercisable as of September 30, 2015 4,226,292 As of September 30, 2015 and December 31, 2014, the Company has recognized all compensation costs related to options granted.

Earnings Per Share

Earnings Per Share	9 Months Ended
	Sep. 30, 2015
Earnings Per Share [Abstract]
Earnings Per Share	Note 9. Earnings Per Share The Company utilizes the two-class method to calculate earnings per share. The two-class method allocates net income to each class of common stock and participating security. Unvested share-based payment awards granted to certain employees and board members entitle holders to same rights as outstanding and vested common stock. These securities are considered to be participating securities and are included in the allocation for computing earnings per share under this method. Income is allocated to common shareholders and participating securities under the two-class method based upon the proportion of each to the total weighted average shares available. The computations of basic and diluted income per share for the three and nine months ended September 30, 2015 and 2014 are as follows: Three Months Ended September 30, Nine Months Ended September 30, 2015 2014 2015 2014 (In thousands) Numerator: Net income to common shareholders $ 5,142 $ 5,020 $ 12,681 $ 9,368 Net income allocated to participating securities - basic and diluted 57 33 137 65 Net income allocated to common shareholders - basic and diluted 5,085 4,987 12,544 9,303 Denominator: Denominator for basic earnings per common share 45,745 47,900 46,139 48,501 Denominator for diluted earnings per common share: Denominator for basic earnings per common share 45,745 47,900 46,139 48,501 Potentially dilutive securities - options 2,494 2,903 2,566 3,278 Potentially dilutive securities – restricted stock — — — — Potentially dilutive securities - warrants — — — 118 Total weighted average diluted shares 48,239 50,803 48,705 51,897 Earnings per common share Basic $ 0.11 $ 0.10 $ 0.27 $ 0.19 Diluted $ 0.11 $ 0.10 $ 0.26 $ 0.18 Warrants to purchase common stock totaling 12,000,000 were not included in the computation of earnings per share for the three and nine months ended September 30, 2015 due to the fact that the results would be anti-dilutive.

Variable Interest Entities

Variable Interest Entities	9 Months Ended
	Sep. 30, 2015
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Variable Interest Entities	Note 10. Variable Interest Entities The Company sponsors the formation of various entities that are considered to be VIEs. The Company evaluates the need to consolidate these entities pursuant to Accounting Standards Codification ("ASC") Topic 810 relating to the consolidation of VIEs. These VIEs were formed to issue term debt securitizations. The assets of the VIEs are primarily comprised of senior secured loans and the liabilities are primarily comprised of debt. The Company's determination of whether it is the primary beneficiary of the VIE is based in part on an assessment of whether or not the Company is exposed to the majority of the risks and rewards of the entity. In instances where the Company retains a significant portion of the equity and remains the servicer of the loans, it was determined that the Company has the power to direct the activities that most significantly impact the economic performance of these VIEs. Additionally, the Company determined that the potential fees that they could receive directly or indirectly from these VIEs represent rights to returns that could potentially be significant to the VIEs. As a result, the Company was deemed the primary beneficiary and therefore has consolidated these entities. VIEs that have been consolidated are disclosed in Note 6. The Company’s involvement with term debt securitizations that are VIEs and unconsolidated by the Company is generally limited to that of an investment manager and its investment in the unconsolidated VIE, if any. The Company is not the primary beneficiary of these unconsolidated VIEs. The Company’s investment in any unconsolidated VIE generally represent an insignificant equity interest. The Company’s exposure to the risk in these entities is generally limited to any capital contributions it has made or is required to make and any earned but uncollected management fees. The following table sets forth the information with respect to the unconsolidated VIEs for which the Company holds a variable interest in as of September 30, 2015 and December 31, 2014: September 30, 2015 December ($ in thousands) Unconsolidated VIE assets $ 807,370 $ 400,000 Unconsolidated VIE liabilities 729,046 368,750 Equity interest included on the Consolidated Balance Sheet — — Maximum risk of loss (1) 24,566 1,047 (1) Includes equity investment the Company has made, or is required to make, and any earned but uncollected management and incentive fees. The Company does not record performance and incentive allocations until the respective measurement period has ended. In April 2013, the Company formed a new managed credit fund, NewStar Arlington Fund LLC (“Arlington Fund”) in partnership with an institutional investor to co-invest in middle market commercial loans originated by the Company’s Leveraged Finance group. As the managing member of Arlington Fund, the Company retained full discretion over Arlington Fund’s investment decisions, subject to usual and customary limitations, and earned management fees as compensation for its services. For the nine months ended September 30, 2014, the management fee was $0.5 million which was eliminated in consolidation. On April 4, 2013, Arlington Fund entered into an agreement establishing $147.0 million of Class A variable funding notes (the “Class A Notes”) and $28.0 million of Class B variable funding notes (the “Class B Notes”) to partially fund eligible middle market loan origination for Arlington Fund. Wells Fargo Bank, National Association funded the Class A Notes as the initial Class A lender and the Company funded the Class B Notes as the initial Class B lender. For the nine months ended September 30, 2014 interest expense on the Class B Notes totaled $0.7 million. For the nine months ended September 30, 2014 and for the year ended December 31, 2013 the Fund distributed excess cash to its institutional investor totaling $0.7 million and $0.6 million, respectively. From inception, the Company was deemed to be the primary beneficiary of Arlington Fund and, therefore, consolidated the financial results of Arlington Fund with the Company’s results of operations and statements of financial position since April 2013. On June 26, 2014, the NewStar Arlington Senior Loan Program LLC (the “Arlington Program”) completed a $409.4 million term debt securitization comprised of all of the Arlington Fund’s loans as well as a portion of the Company’s loans classified as held-for-sale. A portion of the proceeds from this term debt securitization were used to repay all advances under the Class A Notes and the Class B Notes. Following repayment, the Class A Notes and the Class B Notes were redeemed. As a result the amortization of $1.1 million of deferred financing fees was accelerated and recognized during the three months ended June 30, 2014. The Company’s membership interests in Arlington Fund were also redeemed and new membership interests in the Arlington Program were issued to its equity investors. The Company did not recognize a gain or a loss on the redemption of its membership interests in the Arlington Fund. The Company acts as collateral manager for the Arlington Program. As a result of the repayment of the Company’s advances as the Class B lender under the warehouse facility and the redemption of its membership interests in the Arlington Fund, the Company has no ownership or financial interests in the Arlington Fund or its successors except to the extent that it receives management fees as collateral manager of the Arlington Program. As a result, the Company deconsolidated the Arlington Fund from its statements of financial position beginning on June 26, 2014. The Company determined that it is not the primary beneficiary of the Arlington Program and will not consolidate the Arlington Program’s operating results or statements of financial position as of that date. Although the Company consolidated all of the assets and liabilities of Arlington Fund, during the period from April 4, 2013 through June 26, 2014, its maximum exposure to loss was limited to its investments in membership interests in Arlington Fund, its Class B Note receivable, as well as the management fee receivable from Arlington Fund. These items defined the Company’s economic relationship with Arlington Fund but were eliminated upon consolidation. The Company managed the assets of Arlington Fund solely for the benefit of its lenders and investors. If the Company were to have liquidated, the assets of Arlington Fund would not have been available to the Company’s general creditors. Conversely, the investors in the debt of Arlington Fund had no recourse to the Company’s general assets. Therefore, the Company did not consider this debt its obligation. During the period from April 4, 2013 through June 26, 2014 when the Company consolidated the Arlington Fund as a variable interest entity, or VIE, the membership interests representing equity ownership of Arlington Fund were characterized as debt in the Company’s consolidated statement of financial position. The Company applied an imputed interest rate to that debt and recorded the resulting interest expense in its consolidated statement of operations. In the consolidation, the Company eliminated the economic results of its related portion of the membership interests and the applied interest expense from its results of operations and statements of financial position.

Financial Instruments with Off-

Financial Instruments with Off-Balance Sheet Risk	9 Months Ended
	Sep. 30, 2015
Commitments And Contingencies Disclosure [Abstract]
Financial Instruments with Off-Balance Sheet Risk	Note 11. Financial Instruments with Off-Balance Sheet Risk The Company is party to financial instruments with off-balance sheet risk in the normal course of business to meet the financing needs of its borrowers. These financial instruments include unfunded commitments and standby letters of credit. The instruments involve, to varying degrees, elements of credit risk in excess of the amount recognized in the consolidated balance sheet. The contract or notional amounts of those instruments reflect the extent of involvement we have in particular classes of financial instruments. The Company’s exposure to credit loss in the event of nonperformance by the other party to the financial instrument for standby letters of credit is represented by the contractual amount of those instruments. The Company uses the same credit policies in making commitments and conditional obligations as it does for on-balance sheet instruments. Unused lines of credit are commitments to lend to a borrower if certain conditions have been met. These commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. Because certain commitments may expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. The Company evaluates each borrower’s creditworthiness on a case-by-case basis. The amount of collateral required is based on factors that include management’s credit evaluation of the borrower and the borrower’s compliance with financial covenants. Due to their fluctuating nature, the Company cannot know with certainty the aggregate amounts that will be required to fund its unfunded commitments. The aggregate amount of these unfunded commitments currently exceeds the Company’s available funds and will likely continue to exceed its available funds in the future. On December 4, 2014, the Company entered into a total return swap ("TRS") for senior floating rate loans with Citibank. The TRS with Citibank enables the Company, through a wholly owned financing subsidiary NewStar TRS I LLC, to obtain the economic benefits of the loans subject to the TRS, despite the fact that such loans will not be directly owned by it, in return for an interest payment to Citibank. The Company acts as the manager of the TRS and selects the specific loans to be subject to the TRS. The TRS does not qualify for hedge accounting treatment as it does not offset the risks of another investment position. As of September 30, 2015, the fair value of the underlying loan portfolio was $160.8 million and $109.2 million as of December 31, 2014. Interest accrues at one-month LIBOR+1.60% per annum. At September 30, 2015 and December 31, 2014, the Company had net interest receivable from the TRS of $1.6 million and $0.1 million, respectively, included in “Other assets”. The Company is required to cash collateralize a specified percentage of each loan included under the TRS in accordance with margin requirements. As of September 30, 2015 and December 31, 2014, the Company had cash collateral on deposit with Citibank of $51.8 million and $39.0 million, respectively. The Company's obligations under the TRS are non-recourse to it, and its exposure is limited to the value of the cash collateral which may fluctuate from time to time depending on the market value of the underlying loans. At September 30, 2015, the TRS had an unrealized loss position of $1.8 million compared to an unrealized loss position of $0.9 million at December 31, 2014 that was included in “Other assets” and the change was recorded in “Non-interest income”. This loss is based on mark-to-market valuations of the underlying loans and is subject to period over period fluctuations; as such we may be subject to material fluctuations in our consolidated results of operations due to unrealized gains or losses. In addition, unrealized losses in the TRS or other of our off-balance sheet obligations may be realized if we are in a loss position at the time of sale or other disposition. The credit risk involved in issuing letters of credit is essentially the same as that involved in extending credit to our borrowers. Standby letters of credit are conditional commitments issued by us to guarantee the performance by a borrower to a third party. Financial instruments with off-balance sheet risk are summarized as follows: September 30, 2015 December 31, 2014 ($ in thousands) Unused lines of credit $ 484,721 $ 317,583 Standby letters of credit 8,082 7,911

Fair Value

Fair Value	9 Months Ended
	Sep. 30, 2015
Fair Value Disclosures [Abstract]
Fair Value	Note 12. Fair Value ASC 820, Fair Value Measurements · Level 1 – inputs to the valuation methodology are quoted prices (unadjusted) for identical assets or liabilities in active markets. · Level 2 – inputs to the valuation methodology include quoted prices for similar assets and liabilities in active markets, and inputs that are observable for the asset or liability, either directly or indirectly, for substantially the full term of the financial instrument. · Level 3 – inputs to the valuation methodology are unobservable and significant to the fair value measurement. A financial instrument’s categorization within the valuation hierarchy is based upon the lowest level of input that is significant to the fair value measurement. The following table presents recorded amounts of assets and liabilities measured at fair value on a recurring and nonrecurring basis as of September 30, 2015, by caption in the consolidated balance sheet and by ASC 820 valuation hierarchy (as described above). Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Carrying Value in Consolidated Balance Sheet ($ in thousands) Recurring Basis: Investments in debt securities, available-for-sale $ — $ — $ 94,328 $ 94,328 TRS — (242 ) — (242 ) Total assets recorded at fair value on a recurring basis $ — $ (242 ) $ 94,328 $ 94,086 Nonrecurring Basis: Loans, net $ — $ — $ 27,698 $ 27,698 Loans, held-for-sale $ — $ 9,910 $ — $ 9,910 Total assets recorded at fair value on a nonrecurring basis $ — $ 9,910 $ 27,698 $ 37,608 At September 30, 2015, “Investments in debt securities, available-for-sale” consisted of collateralized loan obligations. The fair value measurement is obtained through a third party pricing service or by using internally developed financial models. At September 30, 2015, “Other assets” included TRS with Citibank. The TRS has a maximum notional amount of $175.0 million and is carried at an estimated fair value of $(0.2) million, comprised of $1.6 million of interest receivable and an unrealized loss of $1.8 million on the underlying loan portfolio. The fair value measurement is derived from third party pricing service. At September 30, 2015, “Loans, net” measured at fair value on a nonrecurring basis consisted of impaired collateral-dependent commercial real estate loans. The fair values of these loans are based on third party appraisals of the underlying collateral value as well as the Company’s internal analysis. During the nine months ended September 30, 2015, the Company recorded $0.1 million of specific allowance for credit losses related to “Loans, net” measured at fair value at September 30, 2015. The following table presents a summary of significant unobservable inputs and valuation techniques of the Company’s Level 3 fair value measurements at September 30, 2015. Fair Valuation Techniques Unobservable Input Range ($ in thousands) Financial assets: Investments in debt securities, available-for-sale $ 94,328 Third-party Pricing Loans and leases, net 27,698 Market comparables Valuation model Cost to sell Marketability discount 3% - Total: $ 122,026 The following table presents recorded amounts of assets and liabilities measured at fair value on a recurring and nonrecurring basis as of December 31, 2014, by caption in the consolidated balance sheet and by ASC 820 valuation hierarchy (as described above). Quoted Prices in Active Markets for Identical (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Carrying Value in Consolidated Balance Sheet ($ in thousands) Recurring Basis: Investments in debt securities, available-for-sale $ — $ — $ 46,881 $ 46,881 TRS — (740 ) — (740 ) Total assets recorded at fair value on a recurring basis $ — $ (740 ) $ 46,881 $ 46,141 Nonrecurring Basis: Loans, net $ — $ — $ 27,719 $ 27,719 Loans, held-for-sale $ — $ 3,973 $ — $ 3,973 Total assets recorded at fair value on a nonrecurring basis $ — $ 3,973 $ 27,719 $ 31,692 At December 31, 2014, “Investments in debt securities, available-for-sale” consisted of collateralized loan obligations. The fair value measurement is obtained through a third party pricing service or by using internally developed financial models. At December 31, 2014, “Other assets” included TRS with Citibank. The TRS has a maximum notional amount of $125.0 million and is carried at an estimated fair value of $(0.8) million, comprised of $0.1 million of interest receivable and an unrealized loss of $0.9 million on the underlying loan portfolio. The fair value measurement is obtained through a third party pricing service. At December 31, 2014, “Loans, net” measured at fair value on a nonrecurring basis consisted of impaired collateral-dependent commercial real estate loans. The fair values of these loans are based on third party appraisals of the underlying collateral value as well as the Company’s internal analysis. During 2014, the Company released $0.1 million of specific allowance for credit losses related to “Loans, net” measured at fair value at December 31, 2014. The following table presents a summary of significant unobservable inputs and valuation techniques of the Company’s Level 3 fair value measurements at December 31, 2014. Fair value Valuation Techniques Unobservable Input Range ($ in thousands) Financial assets: Investments in debt securities, available-for-sale $ 46,881 Third-party pricing Pricing Loans and leases, net 27,719 Market comparables Valuation model Cost to sell Marketability discount 3% - Total: $ 74,600 Changes in level 3 recurring fair value measurements The table below illustrates the change in balance sheet amounts during the three and nine months ended September 30, 2015 and 2014 (including the change in fair value), for financial instruments measured on a recurring basis and classified by the Company as level 3 in the valuation hierarchy. When a determination is made to classify a financial instrument as level 3, the determination is based upon the significance of the unobservable parameters to the overall fair value measurement. However, level 3 financial instruments typically include, in addition to the unobservable or level 3 components, observable components (that is, components that are actively quoted and can be validated to external sources); accordingly, the gains and losses in the table below include changes in fair value due in part to observable factors that are part of the valuation methodology. The Company did not transfer any financial instruments in or out of level 1, 2, or 3 during the three and nine months ended September 30, 2015 and 2014. For the three months ended September 30, 2015: Investments Debt Securities, Available-for-sale ($ Balance as of June 30, 2015 $ 108,454 Total gains or losses (realized/unrealized) Included in earnings 376 Included in other comprehensive income (4,365 ) Purchases 22,863 Issuances — Settlements (33,000 ) Balance as of September 30, 2015 $ 94,328 For the three months ended September 30, 2014: Investments Debt Securities, Available-for-sale ($ Balance as of June 30, 2014 $ 16,545 Total gains or losses (realized/unrealized) Included in earnings 55 Included in other comprehensive income (186 ) Purchases 4,609 Issuances — Settlements — Balance as of September 30, 2014 $ 21,023 For the nine months ended September 30, 2015: Investments Debt Securities, Available-for-sale ($ Balance as of December 31, 2014 $ 46,881 Total gains or losses (realized/unrealized) Included in earnings 620 Included in other comprehensive income (5,193 ) Purchases 85,020 Issuances — Settlements (33,000 ) Balance as of September 30, 2015 $ 94,328 For the nine months ended September 30, 2014: Investments Debt Securities, Available-for-sale ($ Balance as of December 31, 2013 $ 22,198 Total gains or losses (realized/unrealized) Included in earnings 349 Included in other comprehensive income (133 ) Purchases 4,609 Issuances — Settlements (6,000 ) Balance as of September 30, 2014 $ 21,023 The following table presents the carrying amounts and estimated fair values of the Company’s financial instruments at September 30, 2015 and December 31, 2014. The fair value of a financial instrument is the amount at which the instrument could be exchanged in a current transaction between willing parties. September 30, 2015 December 31, 2014 Carrying amount Fair Carrying amount Fair ($ in thousands) Financial assets: Cash and cash equivalents $ 57,472 $ 57,472 $ 33,033 $ 33,033 Restricted cash 140,854 140,854 95,411 95,411 Cash collateral on deposit with custodian 53,738 53,738 38,975 38,975 Loans held-for-sale 427,418 427,418 200,569 200,569 Loans and leases, net 2,991,370 3,016,543 2,305,896 2,314,271 Investments in debt securities available-for-sale 94,328 94,328 46,881 46,881 Other assets 11,227 11,227 15,613 15,613 Financial liabilities: Credit facilities $ 625,595 $ 625,595 $ 487,768 $ 487,768 Term debt 1,890,765 1,880,704 1,193,187 1,163,803 Repurchase agreements 137,640 142,337 57,227 63,507 Senior notes 300,000 297,930 — — Corporate debt — — 238,500 238,500 Subordinated notes 189,852 253,382 156,831 184,087 The carrying amounts shown in the table are included in the consolidated balance sheets under the indicated captions. The following table presents the carrying amounts, estimated fair values, and placement in the fair value hierarchy of the Company’s financial instruments at September 30, 2015 and December 31, 2014. The table excludes financial instruments for which the carrying amount approximates fair value such as cash and cash equivalents, restricted cash, investments in debt securities available-for-sale, and financial information disclosed above. Fair Value Measurements September 30, 2015 Carrying amount Fair Level 1 Level 2 Level 3 ($ in thousands) Financial assets: Loans and leases, net $ 2,991,370 $ 3,016,543 $ — $ — $ 3,016,543 Loans held-for-sale 427,418 427,418 — 427,418 — Other assets 11,227 11,227 — — 11,227 Financial liabilities: Credit facilities 625,595 625,595 — 625,595 — Term debt securitizations 1,890,765 1,880,704 — 1,880,704 — Repurchase agreements 137,640 142,337 — 142,337 — Senior notes 300,000 297,930 — 297,930 — Subordinated notes 189,852 253,282 — — 253,282 Fair Value Measurements December 31, 2014 Carrying amount Fair Level 1 Level 2 Level 3 ($ in thousands) Financial assets: Loans and leases, net $ 2,305,896 $ 2,314,271 $ — $ — $ 2,314,271 Loans held-for-sale 200,569 200,569 — 200,569 — Other assets 15,613 15,613 — — 15,613 Financial liabilities: Credit facilities 487,768 487,768 — 487,768 — Term debt securitizations 1,193,187 1,163,803 — 1,163,803 — Repurchase agreements 57,227 63,507 — 63,507 — Subordinated notes 156,831 184,087 — — 184,087 The following methods and assumptions were used to estimate the fair value of each class of financial instruments: Cash and cash equivalents, restricted cash and cash collateral on deposit with custodian: The carrying amounts approximate fair value because of the short maturity of these instruments. Loans held-for-sale, net: The fair values are based on quoted prices, where available, cost, or are determined by discounting estimated cash flows using model-based valuation techniques. Inputs into the model-based valuations can include changes in market indexes, selling prices of similar loans, management’s assumption related to credit rating of the loan, prepayment assumptions and other factors, such as credit loss assumptions. Loans and leases, net: The fair value was determined as the present value of expected future cash flows discounted at current market interest rates offered by similar lending institutions for loans with similar terms to companies with comparable credit risk. This method of estimating fair value does not incorporate the exit price concept of fair value and is based on significant unobservable inputs. The amount included in the above table excludes impaired collateral-dependent commercial real estate loans. Investments in debt securities: The fair values of debt securities are based on quoted market prices, when available, at the reporting date for those or similar investments. When no market data is available, we estimate fair value using various valuation tools including cash flow models that utilize financial statements and business plans, as well as qualitative factors. Credit facilities: Due to the adjustable rate nature of the borrowings, the fair values of the credit facilities are estimated to be their carrying values. Rates currently are comparable to those offered to the Company for similar debt instruments of comparable maturities by the Company’s lenders. Term debt securitizations: The fair value was determined by applying prevailing term debt securitization market interest rates to the Company’s current term debt securitization structure. Repurchase agreements: The fair value was determined by applying prevailing repurchase agreement market interest rates to the Company’s current repurchase agreement structure. Senior notes: The fair value is based on quoted market prices. Subordinated notes: The fair value was estimated as the present value of expected future cash flows discounted at market interest rates on similar debt instruments, issued by companies with comparable credit ratings. Corporate debt: The fair value was determined as the present value of future cash flows discounted at market interest rates on similar debt instruments. Other assets: Comprised of non-public investments which are initially valued at transaction price and subsequently adjusted when evidence is available to support such adjustments when appropriate. The estimated fair value was determined based on the Company’s valuation techniques, including discounting estimated cash flows and model-based valuations.

Related-Party Transactions

Related-Party Transactions	9 Months Ended
	Sep. 30, 2015
Related Party Transactions [Abstract]
Related-Party Transactions	Note 13. Related-Party Transactions On January 15, 2015, the Company announced the closing of the NewStar Clarendon Fund CLO LLC (the “Clarendon Fund”), a $400.0 million term debt securitization. The Clarendon Fund is the third credit fund established by the Company to co-invest in directly originated middle market commercial loans. To comply with EU risk retention rules, the Company holds 5% of each class of note in the securitization, totaling $20.4 million. The Clarendon Fund employs an independent investment professional who is responsible for investment decision making on behalf of the program. The Company has determined that it is not the primary beneficiary of the Clarendon Fund and will not consolidate the Clarendon Fund’s operating results or statements of financial position. Pursuant to a Collateral Management Agreement dated January 15, 2015, the Company serves as collateral manager of the Clarendon Fund. The Company is entitled to receive a fee, which will accrue quarterly based on the fee basis amount in arrears payable on each payment date. For the three and nine months ended September 30, 2015, the Clarendon Fund’s collateral management fee was $0.5 million and $1.5 million, respectively. Pursuant to a Collateral Management Agreement dated June 26, 2014, the Company serves as collateral manager of the Arlington Program. The Company is entitled to receive a fee, which will accrue quarterly based on the fee basis amount in arrears payable on each payment date. For the three and nine months ended September 30, 2015, the Arlington Program’s collateral management fee was $0.5 million and $1.5 million, respectively, and for the three months ended September 30, 2014, the Fund paid the Company $0.1 million. Pursuant to an Investment Management Agreement dated August 3, 2005, the Company serves as investment manager of the NewStar Credit Opportunities Fund, Ltd. (the “Fund”), a Cayman Islands exempted company limited by shares incorporated under the provisions of The Companies Law of the Cayman Islands. The Fund pays the Company a fee when cash is distributed to its investors. For the three and nine months ended September 30, 2015, the Fund paid the Company $0.1 million and $0.1 million, respectively and for the three and nine months ended September 30, 2014, the Fund paid the Company $0.0 and $0.1 million, respectively.

Subsequent Event

Subsequent Event	9 Months Ended
	Sep. 30, 2015
Subsequent Events [Abstract]
Subsequent Event	Note 14. Subsequent Ev ents FOC Capital Acquisition On October 7, 2015 the Company acquired 100% of the outstanding limited liability company interests of Feingold O’Keeffe Capital, L.L.C (“FOC Capital”) for a purchase price of $20.9 million in cash. FOC Capital is a private, alternative asset management firm headquartered in Boston, Massachusetts. The acquisition will be accounted for as a business combination and will be consolidated in the financial statements of the Company effective October 7, 2015. The Company has not completed the evaluation and allocation of the purchase price. Stock Repurchase Program On October 7, 2015, the Company’s Board of Directors authorized the repurchase of up to $5 million of the Company’s common stock from time to time on the open market or in privately negotiated transactions. The timing and amount of any shares purchased will be determined by the Company’s management based on its evaluation of market conditions and other factors. The repurchase program, which will expire on March 31, 2016 unless extended by the Board of Directors, may be suspended or discontinued at any time without notice. Subordinated Notes borrowing On October 26, 2015, the Company drew an additional $25 million of the Subordinated Notes, under the existing commitment from funds managed by GSO Capital and Franklin Square, bringing the outstanding to $275 million leaving $25 million remaining to be drawn by December 2015.

Summary of Significant Accoun23

Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2015
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation These interim condensed consolidated financial statements include the accounts of the Company and its subsidiaries (collectively, “NewStar”) and have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”). All significant intercompany transactions have been eliminated in consolidation. These interim condensed financial statements include adjustments of a normal and recurring nature considered necessary by management to fairly present NewStar’s financial position, results of operations and cash flows. These interim condensed financial statements may not be indicative of financial results for the full year. The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect certain reported amounts and disclosure of contingent assets and liabilities. Actual results could differ from those estimates. The estimates most susceptible to change in the near-term are the Company’s estimates of its (i) allowance for credit losses, (ii) recorded amounts of deferred income taxes, (iii) fair value measurements used to record fair value adjustments to certain financial instruments, (iv) valuation of investments and (v) determination of other than temporary impairments and temporary impairments. The interim condensed consolidated financial statements and notes thereto should be read in conjunction with the Company’s Annual Report on Form 10-K, as amended, for the year ended December 31, 2014.
Prior Period Reclassification	Prior Period Reclassification Certain prior period disclosure amounts have been reclassified to conform to current period presentation.
Consolidation	Consolidation On June 26, 2014, the NewStar Arlington Senior Loan Program LLC (the “Arlington Program”) completed a $409.4 million term debt securitization comprised of all of the loans of NewStar Arlington Fund LLC (“Arlington Fund”) as well as a portion of the Company’s loans classified as held-for-sale. A portion of the proceeds from this term debt securitization were used to repay all advances under the Class A Notes and the Class B Notes. Following repayment, the Class A Notes and the Class B Notes were redeemed. The Company’s membership interests in Arlington Fund were also redeemed and new membership interests in the Arlington Program were issued to its equity investors. The Company acts as collateral manager for the Arlington Program. As a result of the repayment of the Company’s advances as the Class B lender under the warehouse facility and the redemption of its membership interests in the Arlington Fund, the Company has no ownership or financial interests in the Arlington Fund or its successors except to the extent that it receives management fees as collateral manager of the Arlington Program. Additionally, the Arlington Program employs an independent investment professional who is responsible for investment decision making on behalf of the program. As a result, the Company deconsolidated the Arlington Fund from its statement of financial position beginning on June 26, 2014. The Company is not the primary beneficiary of the Arlington Program and has not consolidated the Arlington Program’s operating results or statements of financial position as of that date.
Recently Issued Accounting Standards	Recently Issued Accounting Standards In September 2015, the FASB issued ASU 2015-16, Simplifying the Accounting for Measurement-Period Adjustments in Business Combinations (Topic 805) In April 2015, the FASB issued ASU 2015-03, Interest - Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs In February 2015, the FASB issued ASU 2015-02, Consolidation (Topic 810): Amendments to the Consolidation Analysis In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606) 2017.

Loans Held-for-Sale, Loans, L24

Loans Held-for-Sale, Loans, Leases and Allowance for Credit Losses (Tables)	9 Months Ended
	Sep. 30, 2015
Receivables [Abstract]
Loans Held-for-Sale	As of September 30, 2015 and December 31, 2014, loans held-for-sale consisted of the following: September 30, 2015 December 31, 2014 ($ in thousands) Leveraged Finance $ 431,811 $ 202,369 Gross loans held-for-sale 431,811 202,369 Deferred loan fees, net (4,393 ) (1,800 ) Total loans held-for-sale, net $ 427,418 $ 200,569
Summary of Loans and Leases	As of September 30, 2015, and December 31, 2014, loans and leases consisted of the following: September 30, 2015 December 31, 2014 ($ in thousands) Leveraged Finance $ 2,539,875 $ 1,881,277 Business Credit 274,617 286,918 Real Estate 100,590 105,394 Equipment Finance 175,208 96,666 Gross loans and leases 3,090,290 2,370,255 Deferred loan fees, net (45,808 ) (21,376 ) Allowance for loan and lease losses (53,112 ) (42,983 ) Total loans and leases, net $ 2,991,370 $ 2,305,896
Summary of Impaired Loans	A summary of impaired loans is as follows: Investment, Net of Charge-offs Investment, Net of Unamortized Discount/Premium Unpaid Principal ($ in thousands) September 30, 2015 Leveraged Finance $ 165,424 $ 159,551 $ 194,871 Business Credit — — — Real Estate 34,964 34,936 38,310 Equipment Finance 847 747 847 Total $ 201,235 $ 195,234 $ 234,028 December 31, 2014 Leveraged Finance $ 164,886 $ 160,223 $ 186,002 Business Credit — — 366 Real Estate 52,309 52,230 55,661 Equipment Finance — — — Total $ 217,195 $ 212,453 $ 242,029 Recorded Investment Related Allowance for Credit Losses Recorded Investment, net, with a Related Allowance for Credit Losses Recorded Investment without a Related Allowance for Credit Losses Recorded Investment, net, without a Related Allowance for Credit Losses ($ in thousands) September 30, 2015 Leveraged Finance $ 103,588 $ 97,743 $ 61,836 $ 61,808 Business Credit — — — — Real Estate 27,704 27,676 7,260 7,260 Equipment Finance — — 847 747 Total $ 131,292 $ 125,419 $ 69,943 $ 69,815 December 31, 2014 Leveraged Finance $ 103,159 $ 98,528 $ 61,727 $ 61,695 Business Credit — — — — Real Estate — — 52,309 52,230 Equipment Finance — — — — Total $ 103,159 $ 98,528 $ 114,036 $ 113,925
Evaluation Summary of Portfolio and Allowance for Loan and Lease Losses by Impairment	Below is a summary of the Company’s evaluation of its portfolio and allowance for loan and lease losses by impairment methodology: Leveraged Finance Business Credit Real Estate Equipment Finance September 30, 2015 Investment Allowance Investment Allowance Investment Allowance Investment Allowance ($ in thousands) Collectively evaluated (1) $ 2,374,451 $ 26,594 $ 274,617 $ 1,265 $ 65,626 $ 354 $ 174,361 $ 1,101 Individually evaluated (2) 165,424 23,724 — — 34,964 74 847 — Total $ 2,539,875 $ 50,318 $ 274,617 $ 1,265 $ 100,590 $ 428 $ 175,208 $ 1,101 Leveraged Finance Business Credit Real Estate Equipment Finance December 31, 2014 Investment Allowance Investment Allowance Investment Allowance Investment Allowance ($ in thousands) Collectively evaluated (1) $ 1,716,391 $ 20,045 $ 286,918 $ 1,334 $ 53,085 $ 257 $ 96,666 $ 622 Individually evaluated (2) 164,886 20,725 — — 52,309 — — — Total $ 1,881,277 $ 40,770 $ 286,918 $ 1,334 $ 105,394 $ 257 $ 96,666 $ 622 (1) Represents loans and leases collectively evaluated for impairment in accordance with ASC 450-20, Loss Contingencies, (2) Represents loans individually evaluated for impairment in accordance with ASU 310-10, Receivables,
Summary of Company's Investment in Nonaccrual Loans	Below is a summary of the Company’s investment in nonaccrual loans. Recorded Investment in Nonaccrual Loans September 30, 2015 December ($ in thousands) Leveraged Finance $ 107,658 $ 84,704 Business Credit — — Real Estate — 3,103 Equipment Finance — — Total $ 107,658 $ 87,807
Summary of Types of Concessions With Respect To TDRs	A summary of the types of concessions that the Company made with respect to TDRs at September 30, 2015 and December 31, 2014 is provided below: Group I Group II ($ in thousands) September 30, 2015 $ 160,353 $ 123,865 December 31, 2014 $ 175,589 $ 135,748 Note: A loan may be included in both restructuring groups, but not repeatedly within each group.
Summary of the Company's Loans Classified as TDR	Below is a summary of the Company’s loans which were classified as TDR. For the Nine Months Ended September 30, 2015 Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Investment in TDR Subsequently Defaulted ($ in thousands) Leveraged Finance $ 13,650 $ 13,650 $ 22,333 Business Credit — — — Real Estate — — — Equipment Finance 922 — — Total $ 14,572 $ 13,650 $ 22,333 For the Year Ended December 31, 2014 Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Investment in TDR Subsequently Defaulted ($ in thousands) Leveraged Finance $ — $ — $ 25,933 Business Credit — — — Real Estate — — — Equipment Finance — — — Total $ — $ — $ 25,933
Sets Forth a Breakdown of Troubled Debt Restructurings	The following sets forth a breakdown of troubled debt restructurings at September 30, 2015 and December 31, 2014: As of September 30, 2015 Accrual Status For the nine months ($ in thousands) Loan Type Accruing Nonaccrual Impaired Balance Specific Allowance Charged-off Leveraged Finance $ 57,766 $ 94,480 $ 152,246 $ 22,616 $ 4,000 Business Credit — — — — — Real Estate 7,260 — 7,260 — — Equipment Finance 847 — 847 — — Total $ 65,873 $ 94,480 $ 160,353 $ 22,616 $ 4,000 As of December 31, 2014 Accrual Status For the year ($ in thousands) Loan Type Accruing Nonaccrual Impaired Balance Specific Allowance Charged-off Leveraged Finance $ 80,182 $ 70,734 $ 150,916 $ 19,885 $ 18,709 Business Credit — — — — — Real Estate 21,570 3,103 24,673 — — Equipment Finance — — — — — Total $ 101,752 $ 73,837 $ 175,589 $ 19,885 $ 18,709
Age Analysis of Delinquent Receivables	An age analysis of the Company’s delinquent receivables is as follows: 60-89 Days Past Due Greater than 90 Days Total Past Due Current Total Loans and Leases Investment > 60 Days & Accruing ($ in thousands) September 30, 2015 Leveraged Finance $ - $ 28,587 $ 28,587 $ 2,511,288 $ 2,539,875 $ 8,530 Business Credit — — — 274,617 274,617 — Real Estate — — — 100,590 100,590 — Equipment Finance — — — 175,208 175,208 — Total $ - $ 28,587 $ 28,587 $ 3,061,703 $ 3,090,290 $ 8,530 60-89 Days Past Due Greater than 90 Days Total Past Due Current Total Loans and Leases Investment in > 60 Days & Accruing ($ in thousands) December 31, 2014 Leveraged Finance $ 25,412 $ 18,151 $ 43,563 $ 1,837,714 $ 1,881,277 $ — Business Credit — — — 286,918 286,918 — Real Estate — — — 105,394 105,394 — Equipment Finance — — — 96,666 96,666 — Total $ 25,412 $ 18,151 $ 43,563 $ 2,326,692 $ 2,370,255 $ —
Summary Activity in the Allowance for Credit Losses	A summary of the activity in the allowance for credit losses is as follows: Three Months Ended September 30, 2015 Leveraged Finance Business Credit Real Estate Equipment Finance Total ($ in thousands) Balance, beginning of period $ 47,698 $ 1,097 $ 323 $ 829 $ 49,947 Provision for credit losses—general 2,443 168 42 272 2,925 Provision for credit losses—specific 1,550 — 59 — 1,609 Loans charged off, net of recoveries — — — — — Balance, end of period $ 51,691 $ 1,265 $ 424 $ 1,101 $ 54,481 Balance, end of period—specific $ 23,724 $ — $ 74 $ — $ 23,798 Balance, end of period—general $ 27,967 $ 1,265 $ 350 $ 1,101 $ 30,683 Average balance of impaired loans $ 170,933 $ — $ 35,218 $ — $ 206,151 Average net book value of impaired leases $ — $ — $ — $ 884 $ 884 Interest recognized from impaired loans and leases $ 2,672 $ — $ 400 $ 15 $ 3,087 Loans and leases Loans individually evaluated with specific allowance $ 103,588 $ — $ 27,704 $ — $ 131,292 Loans individually evaluated with no specific allowance 61,836 — 7,260 847 69,943 Loans and leases collectively evaluated without specific allowance 2,374,451 274,617 65,626 174,361 2,889,055 Total loans and leases $ 2,539,875 $ 274,617 $ 100,590 $ 175,208 $ 3,090,290 Nine Months Ended September 30, 2015 Leveraged Finance Business Credit Real Estate Equipment Finance Total ($ in thousands) Balance, beginning of period $ 41,480 $ 1,334 $ 257 $ 622 $ 43,693 Provision for credit losses—general 7,143 (69 ) 93 479 7,646 Provision for credit losses—specific 7,000 — 74 — 7,074 Loans charged off, net of recoveries (3,932 ) — — — (3,932 ) Balance, end of period $ 51,691 $ 1,265 $ 424 $ 1,101 $ 54,481 Balance, end of period—specific $ 23,724 $ — $ 74 $ — $ 23,798 Balance, end of period—general $ 27,967 $ 1,265 $ 350 $ 1,101 $ 30,683 Average balance of impaired loans $ 175,518 $ — $ 36,488 $ — $ 212,006 Average net book value of impaired leases $ — $ — $ — $ 909 $ 909 Interest recognized from impaired loans and leases $ 8,326 $ — $ 1,183 $ 30 $ 9,539 Three Months Ended September 30, 2014 Leveraged Finance Business Credit Real Estate Equipment Finance Total ($ in thousands) Balance, beginning of period $ 33,786 $ 1,060 $ 3,634 $ 619 $ 39,099 Provision for credit losses—general 1,506 197 (50 ) (67 ) 1,586 Provision for credit losses—specific 1,791 –– (8 ) — 1,783 Loans charged off, net of recoveries (558 ) –– — — (558 ) Balance, end of period $ 36,525 $ 1,257 $ 3,576 $ 552 $ 41,910 Balance, end of period—specific $ 18,305 200 $ 3,320 $ — $ 21,825 Balance, end of period—general $ 18,220 $ 1,057 $ 256 $ 552 $ 20,085 Average balance of impaired loans $ 180,581 $ 572 $ 56,759 $ — $ 237,912 Interest recognized from impaired loans $ 2,465 $ — $ 561 $ — $ 3,026 Loans and leases Loans individually evaluated with specific allowance $ 106,402 $ 236 $ 30,871 $ — $ 137,509 Loans individually evaluated with no specific allowance 64,948 — 25,673 — 90,621 Loans and leases collectively evaluated without specific allowance 1,521,849 225,414 52,739 75,726 1,875,728 Total loans and leases $ 1,693,199 $ 225,650 $ 109,283 $ 75,726 $ 2,103,858 Nine Months Ended September 30, 2014 Leveraged Finance Business Credit Real Estate Equipment Finance Total ($ in thousands) Balance, beginning of period $ 36,803 $ 973 $ 3,653 $ 425 $ 41,854 Provision for credit losses—general 1,801 284 (120 ) 127 2,092 Provision for credit losses—specific 19,693 — 43 — 19,736 Loans charged off, net of recoveries (21,772 ) — — — (21,772 ) Balance, end of period $ 36,525 $ 1,257 $ 3,576 $ 552 $ 41,910 Average balance of impaired loans $ 177,904 $ 525 $ 57,641 $ — $ 236,070 Interest recognized from impaired loans $ 8,356 $ — $ 1,611 $ — $ 9,967

Restricted Cash (Tables)

Restricted Cash (Tables)	9 Months Ended
	Sep. 30, 2015
Cash And Cash Equivalents [Abstract]
Summary of Restricted Cash	Restricted cash as of September 30, 2015 and December 31, 2014 was as follows: September 30, 2015 December 31, 2014 ($ in thousands) Collections on loans pledged to credit facilities $ 59,743 $ 34,508 Principal and interest collections on loans held in trust and prefunding amounts 80,897 60,013 Customer escrow accounts 214 890 Total $ 140,854 $ 95,411

Investments in Debt Securitie26

Investments in Debt Securities, Available-for-Sale (Tables)	9 Months Ended
	Sep. 30, 2015
Investments Debt And Equity Securities [Abstract]
Summary of Amortized Cost of Investments in Debt Securities	Amortized cost of investments in debt securities as of September 30, 2015 and December 31, 2014 was as follows: September 30, 2015 December 31, 2014 ($ in thousands) Investments in debt securities—gross $ 108,318 $ 53,098 Unamortized discount (8,808 ) (6,228 ) Investments in debt securities—amortized cost $ 99,510 $ 46,870
Summary of Amortized Cost, Gross Unrealized Holding Gains, Gross Unrealized Holding Losses, and Fair Value of Available-for-Sale Securities	The amortized cost, gross unrealized holding gains, gross unrealized holding losses, and fair value of available-for-sale securities at September 30, 2015 and December 31, 2014 were as follows: Amortized cost Gross unrealized holding gains Gross unrealized holding losses Fair value ($ in thousands) September 30, 2015 Collateralized loan obligations $ 99,510 $ 22 $ (5,204 ) $ 94,328 $ 99,510 $ 22 $ (5,204 ) $ 94,328 Amortized cost Gross unrealized holding gains Gross unrealized holding losses Fair value ($ in thousands) December 31, 2014 Collateralized loan obligations $ 46,870 $ 214 $ (203 ) $ 46,881 $ 46,870 $ 214 $ (203 ) $ 46,881
Summary of Unrealized Loss on Investments	The following is an analysis of the continuous periods during which the Company has held investment positions which were carried at an unrealized loss as of September 30, 2015 and December 31, 2014: September 30, 2015 Less than 12 Months Greater than or Equal to 12 Months Total ($ in thousands) Number of positions 18 2 20 Fair value $ 82,688 $ 6,558 $ 89,246 Amortized cost 87,703 6,747 94,450 Unrealized loss $ (5,015 ) $ (189 ) $ (5,204 ) December 31, 2014 Less than 12 Months Greater than or Equal to 12 Months Total ($ in thousands) Number of positions 8 — 8 Fair value $ 38,740 $ — $ 38,740 Amortized cost 38,943 — 38,943 Unrealized loss $ (203 ) $ — $ (203 )
Summary of Maturities of Debt Securities	Maturities of debt securities classified as available-for-sale were as follows at September 30, 2015 and December 31, 2014: September 30, 2015 December 31, 2014 Amortized cost Fair value Amortized cost Fair value ($ in thousands) Available-for-sale: Due one year or less $ — $ — $ — $ — Due after one year through five years — — — — Due after five years through ten years 11,037 10,797 46,870 46,881 Due after ten years through fifteen years 88,473 83,531 — — Total $ 99,510 $ 94,328 $ 46,870 $ 46,881

Borrowings (Tables)

Borrowings (Tables)	9 Months Ended
	Sep. 30, 2015
2007-1 CLO Trust [Member]
Debt Instrument [Line Items]
Summary of Borrowings	The following table sets forth selected information with respect to the 2007-1 CLO Trust: Notes originally issued Outstanding balance September 30, 2015 Interest rate Legal final maturity Ratings (S&P/Moody’s/ Fitch)(1) ($ in thousands) 2007-1 CLO Trust Class A-1 $ 336,500 $ 62,346 Libor+0.24% September 30, 2022 AAA/Aaa/AAA Class A-2 100,000 19,612 Libor+0.26% September 30, 2022 AAA/Aaa/AAA Class B 24,000 24,000 Libor+0.55% September 30, 2022 AA+/Aa1/AA Class C 58,500 58,293 Libor+1.30% September 30, 2022 A-/A2/A Class D 27,000 21,000 Libor+2.30% September BBB-/Baa2/BBB+ $ 546,000 $ 185,251 (1) These ratings were initially given in June 2007, are unaudited and are subject to change from time to time.
2012-2 CLO [Member]
Debt Instrument [Line Items]
Summary of Borrowings	The following table sets forth selected information with respect to the 2012-2 CLO: Notes originally issued Outstanding balance September 30, 2015 Interest rate Legal final maturity Ratings (Moody’s/ S&P)(1) ($ in thousands) 2012-2 CLO Class A $ 190,700 $ 190,700 Libor+1.90% January Aaa/AAA Class B 26,000 26,000 Libor+3.25% January 20, 2023 Aa2/N/A Class C 35,200 35,200 Libor+4.25% January 20, 2023 A2/N/A Class D 11,400 11,400 Libor+6.25% January 20, 2023 Baa2/N/A Class E 16,300 16,300 Libor+6.75% January 20, 2023 Ba1/N/A $ 279,600 $ 279,600 (1) These ratings were initially given in December 2012, are unaudited and are subject to change from time to time.
2013-1 CLO [Member]
Debt Instrument [Line Items]
Summary of Borrowings	The following table sets forth selected information with respect to the 2013-1 CLO: Notes originally issued Outstanding balance September 30, 2015 Interest rate Legal final maturity Ratings (S&P/ Moody’s)(2) ($ in thousands) 2013-1 CLO Class A-T $ 202,600 $ 202,600 Libor+1.65% September AAA/Aaa Class A-R 35,000 31,000 (1) September 20, 2023 AAA/Aaa Class B 38,000 38,000 Libor+2.30% September 20, 2023 AA/N/A Class C 36,000 36,000 Libor+3.80% September 20, 2023 A/N/A Class D 21,000 21,000 Libor+4.55% September 20, 2023 BBB/N/A Class E 6,000 6,000 Libor+5.30% September 20, 2023 BBB-/N/A $ 338,600 $ 334,600 (1) Class A-R Notes accrue interest at the Class A-R CP Rate so long as they are held by a CP Conduit, and otherwise will accrue interest at the Class A-R LIBOR Rate or, in certain circumstances, the Class A-R Base Rate, but in no event shall interest rate payable pari passu with the Class A-T Notes exceed the Class A-R Waterfall Rate Cap. (2) These ratings were initially given in September 2013, are unaudited and are subject to change from time to time.
2014-1 CLO [Member]
Debt Instrument [Line Items]
Summary of Borrowings	The following table sets forth selected information with respect to the 2014-1 CLO: Notes originally issued Outstanding balance September 30, 2015 Interest rate Legal final maturity Ratings (Moody’s)(2) ($ in thousands) 2014-1 CLO Class A $ 202,500 $ 202,500 Libor+1.80% April Aaa Class B-1 20,000 20,000 Libor+2.60% April 20, 2025 Aa2 Class B-2 13,250 13,250 (1) April 20, 2025 Aa2 Class C 30,250 30,250 Libor+3.60% April 20, 2025 A2 Class D 23,500 23,500 Libor+4.75% April 20, 2025 Baa3 $ 289,500 $ 289,500 (1) Class B-2 Notes accrue interest at a fixed rate of 4.902%. (2) These ratings were initially given in April 2014, are unaudited and are subject to change from time to time.
2015-1 CLO [Member]
Debt Instrument [Line Items]
Summary of Borrowings	The following table sets forth selected information with respect to the 2015-1 CLO: Notes originally issued Outstanding balance September 30, 2015 Interest rate Legal final maturity Ratings (Moody’s/Fitch)(2) ($ in thousands) 2015-1 CLO Class A-1 $ 253,500 $ 253,500 Libor+1.80% January 20, 2027 Aaa/AAA Class A-2 35,000 35,000 (1) January 20, 2027 Aaa/AAA Class B 50,000 50,000 Libor+2.80% January 20, 2027 Aa2/ N/A Class C 38,500 38,500 Libor+3.85% January 20, 2027 A2/N/A Class D 33,250 33,250 Libor+5.50% January 20, 2027 Baa3/N/A $ 410,250 $ 410,250 (1) Class A-2 Notes accrue interest at a spread over Libor of 1.65% from the closing date to, but excluding March 20, 2017, and 2.00% thereafter. (2) These ratings were initially given in March 2015, are unaudited and are subject to change from time to time.
2015-1 ABS [Member]
Debt Instrument [Line Items]
Summary of Borrowings	The following table sets forth selected information with respect to the 2015-1 ABS: Notes originally issued Outstanding balance September 30, 2015 Interest rate Legal final maturity Ratings (DBRS)(1) ($ in thousands) 2015-1 ABS Class A $ 70,046 63,993 3.27% April 15, 2019 AA $ 70,046 $ 63,993 (1) These ratings were initially given in September 2015, are unaudited and are subject to change from time to time.
2015-2 CLO [Member]
Debt Instrument [Line Items]
Summary of Borrowings	The following table sets forth selected information with respect to the 2015-2 CLO: Notes originally issued Outstanding balance September 30, 2015 Interest rate Legal final maturity Ratings (Moody’s/Fitch)(2) ($ in thousands) 2015-2 CLO Class A-1 $ 205,000 $ 205,000 Libor+2.00% August 25, 2027 Aaa/AAA Class A-2 23,000 23,000 (1) August 25, 2027 Aaa/AAA Class B 40,000 40,000 Libor+2.90% August 25, 2027 Aa2/ N/A Class C 26,250 26,250 Libor+3.95% August 25, 2027 A2/N/A Class D 28,500 28,500 Libor+5.25% August 25, 2027 Baa3/N/A Class E 5,000 5,000 Libor+7.50% August 25, 2027 Ba3/N/A $ 327,750 $ 327,750 (1) Class A-2 Notes accrue interest at a fixed rate of 3.461%. (2) These ratings were initially given in August 2015, are unaudited and are subject to change from time to time.

Repurchase Agreements (Tables)

Repurchase Agreements (Tables)	9 Months Ended
	Sep. 30, 2015
Banking And Thrift [Abstract]
Schedule of Loans Sold Under Agreements to Repurchase	Loans sold under agreements to repurchase Three Months Ended September 30, 2015 Year Ended December 31, 2014 ($ in thousands) Outstanding at end of period $ 137,640 $ 57,227 Weighted average rate at end of period 3.56 % 5.16 %

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	9 Months Ended
	Sep. 30, 2015
Equity [Abstract]
Schedule of Authorized Capital	As of September 30, 2015 and December 31, 2014, the Company’s authorized capital consists of preferred and common stock and the following was authorized and outstanding: September 30, 2015 December 31, 2014 Shares authorized Shares outstanding Shares authorized Shares outstanding (In thousands) Preferred stock 5,000 — 5,000 — Common stock 145,000 45,847 145,000 46,620
Schedule of Restricted Stock Activity	Restricted stock activity for the nine months ended September 30, 2015 was as follows: Shares Grant-date fair value ($ in thousands) Non-vested as of December 31, 2014 315,338 $ 4,091 Granted 407,228 4,322 Vested (218,999 ) (2,700 ) Forfeited (2,213 ) (27 ) Non-vested as of September 30, 2015 501,354 $ 5,686
Schedule of Stock Option Activity	Stock option activity for the nine months ended September 30, 2015 was as follows: Options Outstanding as of December 31, 2014 4,628,439 Granted — Exercised (384,332 ) Forfeited (17,815 ) Outstanding as of September 30, 2015 4,226,292 Vested as of September 30, 2015 4,226,292 Exercisable as of September 30, 2015 4,226,292

Earnings Per Share (Tables)

Earnings Per Share (Tables)	9 Months Ended
	Sep. 30, 2015
Earnings Per Share [Abstract]
Computations of Basic and Diluted Income Per Share	The Company utilizes the two-class method to calculate earnings per share. The two-class method allocates net income to each class of common stock and participating security. Unvested share-based payment awards granted to certain employees and board members entitle holders to same rights as outstanding and vested common stock. These securities are considered to be participating securities and are included in the allocation for computing earnings per share under this method. Income is allocated to common shareholders and participating securities under the two-class method based upon the proportion of each to the total weighted average shares available. The computations of basic and diluted income per share for the three and nine months ended September 30, 2015 and 2014 are as follows: Three Months Ended September 30, Nine Months Ended September 30, 2015 2014 2015 2014 (In thousands) Numerator: Net income to common shareholders $ 5,142 $ 5,020 $ 12,681 $ 9,368 Net income allocated to participating securities - basic and diluted 57 33 137 65 Net income allocated to common shareholders - basic and diluted 5,085 4,987 12,544 9,303 Denominator: Denominator for basic earnings per common share 45,745 47,900 46,139 48,501 Denominator for diluted earnings per common share: Denominator for basic earnings per common share 45,745 47,900 46,139 48,501 Potentially dilutive securities - options 2,494 2,903 2,566 3,278 Potentially dilutive securities – restricted stock — — — — Potentially dilutive securities - warrants — — — 118 Total weighted average diluted shares 48,239 50,803 48,705 51,897 Earnings per common share Basic $ 0.11 $ 0.10 $ 0.27 $ 0.19 Diluted $ 0.11 $ 0.10 $ 0.26 $ 0.18

Variable Interest Entities (Tab

Variable Interest Entities (Tables)	9 Months Ended
	Sep. 30, 2015
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Schedule of Unconsolidated Variable Interest Entities	The following table sets forth the information with respect to the unconsolidated VIEs for which the Company holds a variable interest in as of September 30, 2015 and December 31, 2014: September 30, 2015 December ($ in thousands) Unconsolidated VIE assets $ 807,370 $ 400,000 Unconsolidated VIE liabilities 729,046 368,750 Equity interest included on the Consolidated Balance Sheet — — Maximum risk of loss (1) 24,566 1,047 (1) Includes equity investment the Company has made, or is required to make, and any earned but uncollected management and incentive fees. The Company does not record performance and incentive allocations until the respective measurement period has ended.

Financial Instruments with Of32

Financial Instruments with Off-Balance Sheet Risk (Tables)	9 Months Ended
	Sep. 30, 2015
Commitments And Contingencies Disclosure [Abstract]
Financial Instruments with Off-Balance Sheet Risk	Financial instruments with off-balance sheet risk are summarized as follows: September 30, 2015 December 31, 2014 ($ in thousands) Unused lines of credit $ 484,721 $ 317,583 Standby letters of credit 8,082 7,911

Fair Value (Tables)

Fair Value (Tables)	9 Months Ended
	Sep. 30, 2015
Fair Value Disclosures [Abstract]
Assets and Liabilities Measured at Fair Value on Recurring and Nonrecurring Basis	The following table presents recorded amounts of assets and liabilities measured at fair value on a recurring and nonrecurring basis as of September 30, 2015, by caption in the consolidated balance sheet and by ASC 820 valuation hierarchy (as described above). Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Carrying Value in Consolidated Balance Sheet ($ in thousands) Recurring Basis: Investments in debt securities, available-for-sale $ — $ — $ 94,328 $ 94,328 TRS — (242 ) — (242 ) Total assets recorded at fair value on a recurring basis $ — $ (242 ) $ 94,328 $ 94,086 Nonrecurring Basis: Loans, net $ — $ — $ 27,698 $ 27,698 Loans, held-for-sale $ — $ 9,910 $ — $ 9,910 Total assets recorded at fair value on a nonrecurring basis $ — $ 9,910 $ 27,698 $ 37,608 The following table presents recorded amounts of assets and liabilities measured at fair value on a recurring and nonrecurring basis as of December 31, 2014, by caption in the consolidated balance sheet and by ASC 820 valuation hierarchy (as described above). Quoted Prices in Active Markets for Identical (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Carrying Value in Consolidated Balance Sheet ($ in thousands) Recurring Basis: Investments in debt securities, available-for-sale $ — $ — $ 46,881 $ 46,881 TRS — (740 ) — (740 ) Total assets recorded at fair value on a recurring basis $ — $ (740 ) $ 46,881 $ 46,141 Nonrecurring Basis: Loans, net $ — $ — $ 27,719 $ 27,719 Loans, held-for-sale $ — $ 3,973 $ — $ 3,973 Total assets recorded at fair value on a nonrecurring basis $ — $ 3,973 $ 27,719 $ 31,692
Summary of Significant Unobservable Inputs and Valuation Techniques	The following table presents a summary of significant unobservable inputs and valuation techniques of the Company’s Level 3 fair value measurements at September 30, 2015. Fair Valuation Techniques Unobservable Input Range ($ in thousands) Financial assets: Investments in debt securities, available-for-sale $ 94,328 Third-party Pricing Loans and leases, net 27,698 Market comparables Valuation model Cost to sell Marketability discount 3% - Total: $ 122,026 The following table presents a summary of significant unobservable inputs and valuation techniques of the Company’s Level 3 fair value measurements at December 31, 2014. Fair value Valuation Techniques Unobservable Input Range ($ in thousands) Financial assets: Investments in debt securities, available-for-sale $ 46,881 Third-party pricing Pricing Loans and leases, net 27,719 Market comparables Valuation model Cost to sell Marketability discount 3% - Total: $ 74,600
Reconciliation of Financial Instruments Measured on Recurring Basis and Classified as Level 3 Inputs	For the three months ended September 30, 2015: Investments Debt Securities, Available-for-sale ($ Balance as of June 30, 2015 $ 108,454 Total gains or losses (realized/unrealized) Included in earnings 376 Included in other comprehensive income (4,365 ) Purchases 22,863 Issuances — Settlements (33,000 ) Balance as of September 30, 2015 $ 94,328 For the three months ended September 30, 2014: Investments Debt Securities, Available-for-sale ($ Balance as of June 30, 2014 $ 16,545 Total gains or losses (realized/unrealized) Included in earnings 55 Included in other comprehensive income (186 ) Purchases 4,609 Issuances — Settlements — Balance as of September 30, 2014 $ 21,023 For the nine months ended September 30, 2015: Investments Debt Securities, Available-for-sale ($ Balance as of December 31, 2014 $ 46,881 Total gains or losses (realized/unrealized) Included in earnings 620 Included in other comprehensive income (5,193 ) Purchases 85,020 Issuances — Settlements (33,000 ) Balance as of September 30, 2015 $ 94,328 For the nine months ended September 30, 2014: Investments Debt Securities, Available-for-sale ($ Balance as of December 31, 2013 $ 22,198 Total gains or losses (realized/unrealized) Included in earnings 349 Included in other comprehensive income (133 ) Purchases 4,609 Issuances — Settlements (6,000 ) Balance as of September 30, 2014 $ 21,023
Carrying Amounts and Estimated Fair Values of Company's Financial Instruments	The following table presents the carrying amounts and estimated fair values of the Company’s financial instruments at September 30, 2015 and December 31, 2014. The fair value of a financial instrument is the amount at which the instrument could be exchanged in a current transaction between willing parties. September 30, 2015 December 31, 2014 Carrying amount Fair Carrying amount Fair ($ in thousands) Financial assets: Cash and cash equivalents $ 57,472 $ 57,472 $ 33,033 $ 33,033 Restricted cash 140,854 140,854 95,411 95,411 Cash collateral on deposit with custodian 53,738 53,738 38,975 38,975 Loans held-for-sale 427,418 427,418 200,569 200,569 Loans and leases, net 2,991,370 3,016,543 2,305,896 2,314,271 Investments in debt securities available-for-sale 94,328 94,328 46,881 46,881 Other assets 11,227 11,227 15,613 15,613 Financial liabilities: Credit facilities $ 625,595 $ 625,595 $ 487,768 $ 487,768 Term debt 1,890,765 1,880,704 1,193,187 1,163,803 Repurchase agreements 137,640 142,337 57,227 63,507 Senior notes 300,000 297,930 — — Corporate debt — — 238,500 238,500 Subordinated notes 189,852 253,382 156,831 184,087
Carrying Amounts, Estimated Fair Values and Placement in Fair Value Hierarchy of Financial Instruments	The following table presents the carrying amounts, estimated fair values, and placement in the fair value hierarchy of the Company’s financial instruments at September 30, 2015 and December 31, 2014. The table excludes financial instruments for which the carrying amount approximates fair value such as cash and cash equivalents, restricted cash, investments in debt securities available-for-sale, and financial information disclosed above. Fair Value Measurements September 30, 2015 Carrying amount Fair Level 1 Level 2 Level 3 ($ in thousands) Financial assets: Loans and leases, net $ 2,991,370 $ 3,016,543 $ — $ — $ 3,016,543 Loans held-for-sale 427,418 427,418 — 427,418 — Other assets 11,227 11,227 — — 11,227 Financial liabilities: Credit facilities 625,595 625,595 — 625,595 — Term debt securitizations 1,890,765 1,880,704 — 1,880,704 — Repurchase agreements 137,640 142,337 — 142,337 — Senior notes 300,000 297,930 — 297,930 — Subordinated notes 189,852 253,282 — — 253,282 Fair Value Measurements December 31, 2014 Carrying amount Fair Level 1 Level 2 Level 3 ($ in thousands) Financial assets: Loans and leases, net $ 2,305,896 $ 2,314,271 $ — $ — $ 2,314,271 Loans held-for-sale 200,569 200,569 — 200,569 — Other assets 15,613 15,613 — — 15,613 Financial liabilities: Credit facilities 487,768 487,768 — 487,768 — Term debt securitizations 1,193,187 1,163,803 — 1,163,803 — Repurchase agreements 57,227 63,507 — 63,507 — Subordinated notes 156,831 184,087 — — 184,087

Organization - Commitments (Det

Organization - Commitments (Details)	9 Months Ended
	Sep. 30, 2015USD ($)
Other Commitments [Line Items]
Possible balance sheet exposure to a single customer - exceed	$ 30,000,000
Minimum [Member]
Other Commitments [Line Items]
Range of commitment per borrower	10,000,000
Maximum [Member]
Other Commitments [Line Items]
Range of commitment per borrower	$ 50,000,000

Organization - Additional Infor

Organization - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2015USD ($)SegmentGroup
Net Investment Income [Line Items]
Number of operating segment | Segment	1
Number of specialized lending groups | Group	4
Minimum [Member] | Leveraged Finance [Member]
Net Investment Income [Line Items]
Annual cash flow (EBITDA) of companies financed through specialized lending groups	$ 10,000,000
Minimum [Member] | Business Credit [Member]
Net Investment Income [Line Items]
Annual sales revenue of companies whose working capital needs financed through specialized lending groups	25,000,000
Minimum [Member] | Real Estate [Member]
Net Investment Income [Line Items]
Value of commercial real estate properties of which acquisition financed through specialized lending groups	10,000,000
Minimum [Member] | Equipment Finance [Member]
Net Investment Income [Line Items]
Revenues from national specialized lending groups	25,000,000
Maximum [Member] | Leveraged Finance [Member]
Net Investment Income [Line Items]
Annual cash flow (EBITDA) of companies financed through specialized lending groups	50,000,000
Maximum [Member] | Business Credit [Member]
Net Investment Income [Line Items]
Annual sales revenue of companies whose working capital needs financed through specialized lending groups	500,000,000
Maximum [Member] | Real Estate [Member]
Net Investment Income [Line Items]
Value of commercial real estate properties of which acquisition financed through specialized lending groups	$ 50,000,000

Summary of Significant Accoun36

Summary of Significant Accounting Policies - Additional Information (Detail) $ in Millions	Jun. 26, 2014USD ($)
NewStar Arlington Senior Loan Program LLC [Member]
Debt Instrument, Redemption [Line Items]
Term debt securitization	$ 409.4
NewStar Arlington Fund LLC [Member]
Debt Instrument, Redemption [Line Items]
Ownership Interests	0.00%

Loans Held-for-Sale, Loans, L37

Loans Held-for-Sale, Loans, Leases and Allowance for Credit Losses - Additional Information (Detail)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2015USD ($)Grouprisk_factor	Sep. 30, 2014USD ($)	Sep. 30, 2015USD ($)SegmentGrouprisk_factor	Sep. 30, 2014USD ($)	Dec. 31, 2014USD ($)	Dec. 31, 2012Loans	Nov. 02, 2015USD ($)	Jun. 30, 2015USD ($)	Jun. 30, 2014USD ($)	Dec. 31, 2013USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of operating segment | Segment			1
Number of specialized lending groups | Group	4		4
Loans held-for-sale, net	$ 427,418,000		$ 427,418,000		$ 200,569,000
Loans sold, aggregate amount	37,800,000	$ 17,900,000	37,800,000	$ 17,900,000
Gain (loss) on sale of loans, net	360,000	(23,000)	314,000	(189,000)
Loans and leases, net	2,991,370,000		2,991,370,000		2,305,896,000
Impaired loans	201,235,000		201,235,000		217,195,000
Impaired loans restructured and classified as TDR	160,400,000		160,400,000		175,589,000
Aggregate carrying value of equity investments	11,500,000		11,500,000		16,400,000
Recorded Investment in Nonaccrual Loans	107,658,000		107,658,000		87,807,000
Loans charged-off, net of recoveries	0	558,000	3,932,000	21,772,000
Impaired loans, non-accrual status	7,000,000		29,300,000		43,500,000
Specific provisions for impaired loans during the year	1,600,000		7,100,000		22,200,000
Specific allowance for impaired loans	23,800,000		23,800,000
Impaired loans with specific allowance	131,300,000		131,300,000		103,200,000
Impaired loans related to delinquent loans greater than 60 days	$ 20,100,000		$ 20,100,000		$ 43,600,000
Number of days past due to classified as delinquent			60 days		60 days
Impaired loans related to delinquent loans			$ 1,700,000		$ 8,700,000
Aggregate outstanding balance of non-accrual loan returned to performing status					1,900,000
Specific allowance for impaired loans					20,700,000
Number of impaired commercial real estate loans | Loans						2
Gains (Losses) on Sales of Other Real Estate			$ (82,000)
Minimum number of years of database for risk rating analysis			25 years
Number Of Risk Factors Used To Determine Allowance For Credit Losses | risk_factor	10		10
Allowance for unfunded commitments	$ 53,112,000		$ 53,112,000		42,983,000
Allowance for credit losses	54,481,000	41,910,000	54,481,000	41,910,000	$ 43,693,000			$ 49,947,000	$ 39,099,000	$ 41,854,000
Provision for credit losses	$ 4,534,000	$ 3,369,000	$ 14,720,000	21,828,000
Financing Receivable Percentage Of Impaired And Troubled Debt Restructuring To All Loans	7.00%		7.00%		9.00%
Allowance for credit losses reduction percentage			0.05%
Commitments To Extend Credit [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for unfunded commitments	$ 1,400,000		$ 1,400,000		$ 700,000
TDRs [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired loans restructured and classified as TDR	160,353,000		160,353,000		175,589,000
Specific allowance for impaired loans	22,616,000		22,616,000		19,885,000
Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial real estate properties sold	3,000,000				9,500,000
Gains (Losses) on Sales of Other Real Estate	(10,000)				10,000
Non-accrual Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, recovered			100,000
Loans charged-off, net of recoveries	0		3,932,000		18,800,000
Non-accrual Loans [Member] | TDRs [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans charged-off, net of recoveries			4,000,000
Nonperforming Financing Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Range of commitment per borrower			10,300,000		10,900,000
Criticized [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases, net	151,500,000		151,500,000		133,200,000
Impaired loans	150,800,000		150,800,000		121,800,000
Loans Pass [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases, net	29,000,000		29,000,000		$ 2,200
Other than NCOF [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gain (loss) on sale of loans, net			300,000	$ (200,000)
Credit Funds [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held-for-sale, net	431,800,000		431,800,000
Loans held-for-sale an aggregate outstanding balance	$ 429,700,000		$ 429,700,000
Credit Funds [Member] | Subsequent Event [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans sold, aggregate amount							$ 17,400,000

Loans Held-for-Sale, Loans, L38

Loans Held-for-Sale, Loans, Leases and Allowance for Credit Losses - Loans Held-for-Sale (Detail) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014	Sep. 30, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans held-for-sale	$ 3,090,290	$ 2,370,255	$ 2,103,858
Deferred loan fees, net	(45,808)	(21,376)
Total loans held-for-sale, net	2,991,370	2,305,896
Leveraged Finance [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans held-for-sale	2,539,875	1,881,277	$ 1,693,199
Finance Receivables Loans Held For Sale
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans held-for-sale	431,811	202,369
Deferred loan fees, net	(4,393)	(1,800)
Total loans held-for-sale, net	427,418	200,569
Finance Receivables Loans Held For Sale | Leveraged Finance [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans held-for-sale	$ 431,811	$ 202,369

Loans Held-for-Sale, Loans, L39

Loans Held-for-Sale, Loans, Leases and Allowance for Credit Losses - Summary of Loans and Leases (Detail) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014	Sep. 30, 2014
Financing Receivable, Impaired [Line Items]
Gross loans held-for-sale	$ 3,090,290	$ 2,370,255	$ 2,103,858
Deferred loan fees, net	(45,808)	(21,376)
Allowance for loan and lease losses	(53,112)	(42,983)
Total loans held-for-sale, net	2,991,370	2,305,896
Leveraged Finance [Member]
Financing Receivable, Impaired [Line Items]
Gross loans held-for-sale	2,539,875	1,881,277	1,693,199
Allowance for loan and lease losses	(50,318)	(40,770)
Business Credit [Member]
Financing Receivable, Impaired [Line Items]
Gross loans held-for-sale	274,617	286,918	225,650
Allowance for loan and lease losses	(1,265)	(1,334)
Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Gross loans held-for-sale	100,590	105,394	109,283
Allowance for loan and lease losses	(428)	(257)
Equipment Finance [Member]
Financing Receivable, Impaired [Line Items]
Gross loans held-for-sale	175,208	96,666	$ 75,726
Allowance for loan and lease losses	$ (1,101)	$ (622)

Loans Held-for-Sale, Loans, L40

Loans Held-for-Sale, Loans, Leases and Allowance for Credit Losses - Summary of Impaired Loans (Detail) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Financing Receivable, Impaired [Line Items]
Investment, Net of Charge-offs	$ 201,235	$ 217,195
Investment, Net of Unamortized Discount/Premium	195,234	212,453
Unpaid Principal	234,028	242,029
Recorded Investment with a Related Allowance for Credit Losses	131,292	103,159
Recorded Investment, net, with a Related Allowance for Credit Losses	125,419	98,528
Recorded Investment without a Related Allowance for Credit Losses	69,943	114,036
Recorded Investment, net, without a Related Allowance for Credit Losses	69,815	113,925
Leveraged Finance [Member]
Financing Receivable, Impaired [Line Items]
Investment, Net of Charge-offs	165,424	164,886
Investment, Net of Unamortized Discount/Premium	159,551	160,223
Unpaid Principal	194,871	186,002
Recorded Investment with a Related Allowance for Credit Losses	103,588	103,159
Recorded Investment, net, with a Related Allowance for Credit Losses	97,743	98,528
Recorded Investment without a Related Allowance for Credit Losses	61,836	61,727
Recorded Investment, net, without a Related Allowance for Credit Losses	61,808	61,695
Business Credit [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal		366
Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Investment, Net of Charge-offs	34,964	52,309
Investment, Net of Unamortized Discount/Premium	34,936	52,230
Unpaid Principal	38,310	55,661
Recorded Investment with a Related Allowance for Credit Losses	27,704
Recorded Investment, net, with a Related Allowance for Credit Losses	27,676
Recorded Investment without a Related Allowance for Credit Losses	7,260	52,309
Recorded Investment, net, without a Related Allowance for Credit Losses	7,260	$ 52,230
Equipment Finance [Member]
Financing Receivable, Impaired [Line Items]
Investment, Net of Charge-offs	847
Investment, Net of Unamortized Discount/Premium	747
Unpaid Principal	847
Recorded Investment without a Related Allowance for Credit Losses	847
Recorded Investment, net, without a Related Allowance for Credit Losses	$ 747

Loans Held-for-Sale, Loans, L41

Loans Held-for-Sale, Loans, Leases and Allowance for Credit Losses - Evaluation Summary of Portfolio and Allowance for Loan and Lease Losses by Impairment (Detail) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014	Sep. 30, 2014
Financing Receivable, Allowance for Credit Losses [Line Items]
Investment, Collectively evaluated	$ 2,889,055		$ 1,875,728
Total Loans and Leases	3,090,290	$ 2,370,255	2,103,858
Allowance, Total	53,112	42,983
Leveraged Finance [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Investment, Collectively evaluated	2,374,451	1,716,391	1,521,849
Investment, Individually evaluated	165,424	164,886
Total Loans and Leases	2,539,875	1,881,277	1,693,199
Allowance, Collectively evaluated	26,594	20,045
Allowance, Individually evaluated	23,724	20,725
Allowance, Total	50,318	40,770
Business Credit [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Investment, Collectively evaluated	274,617	286,918	225,414
Total Loans and Leases	274,617	286,918	225,650
Allowance, Collectively evaluated	1,265	1,334
Allowance, Total	1,265	1,334
Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Investment, Collectively evaluated	65,626	53,085	52,739
Investment, Individually evaluated	34,964	52,309
Total Loans and Leases	100,590	105,394	109,283
Allowance, Collectively evaluated	354	257
Allowance, Individually evaluated	74
Allowance, Total	428	257
Equipment Finance [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Investment, Collectively evaluated	174,361	96,666	75,726
Investment, Individually evaluated	847
Total Loans and Leases	175,208	96,666	$ 75,726
Allowance, Collectively evaluated	1,101	622
Allowance, Total	$ 1,101	$ 622

Loans Held-for-Sale, Loans, L42

Loans Held-for-Sale, Loans, Leases and Allowance for Credit Losses - Evaluation Summary of Portfolio and Allowance for Loan and Lease Losses by Impairment (Parenthetical) (Detail)	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Leveraged Finance [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Weighted Average Risk Rating of Loans and Leases	5.1	5.1
Point Scale Used to Determine Weighted Average Risk Rating of Loans and Leases	12	12
Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Weighted Average Risk Rating of Loans and Leases	5.1	5.1
Point Scale Used to Determine Weighted Average Risk Rating of Loans and Leases	12	12
Equipment Finance [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Weighted Average Risk Rating of Loans and Leases	5.1	5.1
Point Scale Used to Determine Weighted Average Risk Rating of Loans and Leases	12	12
Business Credit [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Weighted Average Risk Rating of Loans and Leases	5	5
Point Scale Used to Determine Weighted Average Risk Rating of Loans and Leases	10	10

Loans Held-for-Sale, Loans, L43

Loans Held-for-Sale, Loans, Leases and Allowance for Credit Losses - Summary of Company's Investment in Nonaccrual Loans (Detail) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Financing Receivable, Impaired [Line Items]
Recorded Investment in Nonaccrual Loans	$ 107,658	$ 87,807
Leveraged Finance [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment in Nonaccrual Loans	$ 107,658	84,704
Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment in Nonaccrual Loans		$ 3,103

Loans Held-for-Sale, Loans, L44

Loans Held-for-Sale, Loans, Leases and Allowance for Credit Losses - Summary of Types of Concessions with Respect to TDRs (Detail) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Troubled Debt Restructuring, Debtor, Subsequent Periods [Line Items]
Impaired loans restructured and classified as TDR	$ 160,400	$ 175,589
Group I [Member]
Troubled Debt Restructuring, Debtor, Subsequent Periods [Line Items]
Impaired loans restructured and classified as TDR	160,353	175,589
Group II [Member]
Troubled Debt Restructuring, Debtor, Subsequent Periods [Line Items]
Impaired loans restructured and classified as TDR	$ 123,865	$ 135,748

Loans Held-for-Sale, Loans, L45

Loans Held-for-Sale, Loans, Leases and Allowance for Credit Losses - Summary of the Company's Loans Classified as TDR (Detail) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Financing Receivable, Modifications [Line Items]
Pre-Modification Outstanding Recorded Investment	$ 14,572
Post-Modification Outstanding Recorded Investment	13,650
Investment in TDR Subsequently Defaulted	22,333	$ 25,933
Leveraged Finance [Member]
Financing Receivable, Modifications [Line Items]
Pre-Modification Outstanding Recorded Investment	13,650
Post-Modification Outstanding Recorded Investment	13,650
Investment in TDR Subsequently Defaulted	22,333	$ 25,933
Equipment Finance [Member]
Financing Receivable, Modifications [Line Items]
Pre-Modification Outstanding Recorded Investment	$ 922

Loans Held-for-Sale, Loans, L46

Loans Held-for-Sale, Loans, Leases and Allowance for Credit Losses - Sets Forth a Breakdown of Troubled Debt Restructurings (Detail) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Troubled Debt Restructuring, Debtor, Subsequent Periods [Line Items]
Impaired Balance	$ 160,400	$ 175,589
Specific allowance for impaired loans	23,800
TDRs [Member]
Troubled Debt Restructuring, Debtor, Subsequent Periods [Line Items]
Accruing	65,873	101,752
Nonaccrual	94,480	73,837
Impaired Balance	160,353	175,589
Specific allowance for impaired loans	22,616	19,885
Charged- off	4,000	18,709
TDRs [Member] | Leveraged Finance [Member]
Troubled Debt Restructuring, Debtor, Subsequent Periods [Line Items]
Accruing	57,766	80,182
Nonaccrual	94,480	70,734
Impaired Balance	152,246	150,916
Specific allowance for impaired loans	22,616	19,885
Charged- off	4,000	18,709
TDRs [Member] | Real Estate [Member]
Troubled Debt Restructuring, Debtor, Subsequent Periods [Line Items]
Accruing	7,260	21,570
Nonaccrual		3,103
Impaired Balance	7,260	$ 24,673
TDRs [Member] | Equipment Finance [Member]
Troubled Debt Restructuring, Debtor, Subsequent Periods [Line Items]
Accruing	847
Impaired Balance	$ 847

Loans Held-for-Sale, Loans, L47

Loans Held-for-Sale, Loans, Leases and Allowance for Credit Losses - Age Analysis of Delinquent Receivables (Detail) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014	Sep. 30, 2014
Financing Receivable Recorded Investment Past Due [Line Items]
60-89 Days Past Due	$ 28,587	$ 43,563
Current	3,061,703	2,326,692
Total Loans and Leases	3,090,290	2,370,255	$ 2,103,858
Investment in > 60 Days & Accruing	8,530
Leveraged Finance [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
60-89 Days Past Due	28,587	43,563
Current	2,511,288	1,837,714
Total Loans and Leases	2,539,875	1,881,277	1,693,199
Investment in > 60 Days & Accruing	8,530
Business Credit [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Current	274,617	286,918
Total Loans and Leases	274,617	286,918	225,650
Real Estate [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Current	100,590	105,394
Total Loans and Leases	100,590	105,394	109,283
Equipment Finance [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Current	175,208	96,666
Total Loans and Leases	175,208	96,666	$ 75,726
Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
60-89 Days Past Due		25,412
Financing Receivables, 60 to 89 Days Past Due [Member] | Leveraged Finance [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
60-89 Days Past Due		25,412
Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
60-89 Days Past Due	28,587	18,151
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Leveraged Finance [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
60-89 Days Past Due	$ 28,587	$ 18,151

Loans Held-for-Sale, Loans, L48

Loans Held-for-Sale, Loans, Leases and Allowance for Credit Losses - Summary Activity in the Allowance for Credit Losses (Detail) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning of period	$ 49,947,000	$ 39,099,000	$ 43,693,000	$ 41,854,000	$ 41,854,000
Provision for credit losses—general	2,925,000	1,586,000	7,646,000	2,092,000
Provision for credit losses—specific	1,609,000	1,783,000	7,074,000	19,736,000
Loans charged off, net of recoveries	0	(558,000)	(3,932,000)	(21,772,000)
Balance, end of period	54,481,000	41,910,000	54,481,000	41,910,000	43,693,000
Balance, end of period—specific	23,798,000	21,825,000	23,798,000	21,825,000
Balance, end of period—general	30,683,000	20,085,000	30,683,000	20,085,000
Average balance of impaired loans and leases	206,151,000	237,912,000	212,006,000	236,070,000
Interest recognized from impaired loans and leases	3,087,000	3,026,000	9,539,000	9,967,000
Loans individually evaluated with specific allowance	131,292,000	137,509,000	131,292,000	137,509,000
Loans individually evaluated with no specific allowance	69,943,000	90,621,000	69,943,000	90,621,000
Loans and leases collectively evaluated without specific allowance	2,889,055,000	1,875,728,000	2,889,055,000	1,875,728,000
Total Loans and Leases	3,090,290,000	2,103,858,000	3,090,290,000	2,103,858,000	2,370,255,000
Leases [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Average balance of impaired loans and leases	884,000		909,000
Leveraged Finance [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning of period	47,698,000	33,786,000	41,480,000	36,803,000	36,803,000
Provision for credit losses—general	2,443,000	1,506,000	7,143,000	1,801,000
Provision for credit losses—specific	1,550,000	1,791,000	7,000,000	19,693,000
Loans charged off, net of recoveries		(558,000)	(3,932,000)	(21,772,000)
Balance, end of period	51,691,000	36,525,000	51,691,000	36,525,000	41,480,000
Balance, end of period—specific	23,724,000	18,305,000	23,724,000	18,305,000
Balance, end of period—general	27,967,000	18,220,000	27,967,000	18,220,000
Average balance of impaired loans and leases	170,933,000	180,581,000	175,518,000	177,904,000
Interest recognized from impaired loans and leases	2,672,000	2,465,000	8,326,000	8,356,000
Loans individually evaluated with specific allowance	103,588,000	106,402,000	103,588,000	106,402,000
Loans individually evaluated with no specific allowance	61,836,000	64,948,000	61,836,000	64,948,000
Loans and leases collectively evaluated without specific allowance	2,374,451,000	1,521,849,000	2,374,451,000	1,521,849,000	1,716,391,000
Total Loans and Leases	2,539,875,000	1,693,199,000	2,539,875,000	1,693,199,000	1,881,277,000
Business Credit [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning of period	1,097,000	1,060,000	1,334,000	973,000	973,000
Provision for credit losses—general	168,000	197,000	(69,000)	284,000
Balance, end of period	1,265,000	1,257,000	1,265,000	1,257,000	1,334,000
Balance, end of period—specific		200,000		200,000
Balance, end of period—general	1,265,000	1,057,000	1,265,000	1,057,000
Average balance of impaired loans and leases		572,000		525,000
Loans individually evaluated with specific allowance		236,000		236,000
Loans and leases collectively evaluated without specific allowance	274,617,000	225,414,000	274,617,000	225,414,000	286,918,000
Total Loans and Leases	274,617,000	225,650,000	274,617,000	225,650,000	286,918,000
Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning of period	323,000	3,634,000	257,000	3,653,000	3,653,000
Provision for credit losses—general	42,000	(50,000)	93,000	(120,000)
Provision for credit losses—specific	59,000	(8,000)	74,000	43,000
Balance, end of period	424,000	3,576,000	424,000	3,576,000	257,000
Balance, end of period—specific	74,000	3,320,000	74,000	3,320,000
Balance, end of period—general	350,000	256,000	350,000	256,000
Average balance of impaired loans and leases	35,218,000	56,759,000	36,488,000	57,641,000
Interest recognized from impaired loans and leases	400,000	561,000	1,183,000	1,611,000
Loans individually evaluated with specific allowance	27,704,000	30,871,000	27,704,000	30,871,000
Loans individually evaluated with no specific allowance	7,260,000	25,673,000	7,260,000	25,673,000
Loans and leases collectively evaluated without specific allowance	65,626,000	52,739,000	65,626,000	52,739,000	53,085,000
Total Loans and Leases	100,590,000	109,283,000	100,590,000	109,283,000	105,394,000
Equipment Finance [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning of period	829,000	619,000	622,000	425,000	425,000
Provision for credit losses—general	272,000	(67,000)	479,000	127,000
Balance, end of period	1,101,000	552,000	1,101,000	552,000	622,000
Balance, end of period—general	1,101,000	552,000	1,101,000	552,000
Interest recognized from impaired loans and leases	15,000		30,000
Loans individually evaluated with no specific allowance	847,000		847,000
Loans and leases collectively evaluated without specific allowance	174,361,000	75,726,000	174,361,000	75,726,000	96,666,000
Total Loans and Leases	175,208,000	$ 75,726,000	175,208,000	$ 75,726,000	$ 96,666,000
Equipment Finance [Member] | Leases [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Average balance of impaired loans and leases	$ 884,000		$ 909,000

Restricted Cash - Summary of Re

Restricted Cash - Summary of Restricted Cash (Detail) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Restricted Cash And Investments [Abstract]
Collections on loans pledged to credit facilities	$ 59,743	$ 34,508
Principal and interest collections on loans held in trust and prefunding amounts	80,897	60,013
Customer escrow accounts	214	890
Total	$ 140,854	$ 95,411

Restricted Cash - Additional In

Restricted Cash - Additional Information (Detail) $ in Millions	Sep. 30, 2015USD ($)
Restricted Cash And Investments [Abstract]
Restricted cash to fund new or existing loans	$ 15.5

Investments in Debt Securitie51

Investments in Debt Securities, Available-for-Sale - Summary of Amortized Cost of Investments in Debt Securities (Detail) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Investments Debt And Equity Securities [Abstract]
Investments in debt securities—gross	$ 108,318	$ 53,098
Unamortized discount	(8,808)	(6,228)
Investments in debt securities—amortized cost	$ 99,510	$ 46,870

Investments in Debt Securitie52

Investments in Debt Securities, Available-for-Sale - Summary of Amortized Cost, Gross Unrealized Holding Gains, Gross Unrealized Holding Losses, and Fair Value of Available-for-Sale Securities (Detail) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Guarantee Obligations [Line Items]
Investments in debt securities—amortized cost	$ 99,510	$ 46,870
Gross unrealized holding gains	22	214
Gross unrealized holding losses	(5,204)	(203)
Fair value	94,328	46,881
Collateralized Loan Obligations [Member]
Guarantee Obligations [Line Items]
Investments in debt securities—amortized cost	99,510	46,870
Gross unrealized holding gains	22	214
Gross unrealized holding losses	(5,204)	(203)
Fair value	$ 94,328	$ 46,881

Investments in Debt Securitie53

Investments in Debt Securities, Available-for-Sale - Additional Information (Detail) - USD ($)	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Investments Debt And Equity Securities [Abstract]
Purchased debt securities	$ 85,020,000	$ 5,000,000
Other than temporary impairment charges	$ 0	$ 0

Investments in Debt Securitie54

Investments in Debt Securities, Available-for-Sale - Summary of Unrealized Loss on Investments (Detail) $ in Thousands	Sep. 30, 2015USD ($)Positions	Dec. 31, 2014USD ($)Positions
Investments Debt And Equity Securities [Abstract]
Number of positions, Less than 12 Months | Positions	18	8
Fair value, Less than 12 Months	$ 82,688	$ 38,740
Amortized cost, Less than 12 Months	87,703	38,943
Unrealized loss, Less than 12 Months	$ (5,015)	$ (203)
Number of positions, Greater than or Equal to 12 Months | Positions	2
Fair value, Greater than or Equal to 12 Months	$ 6,558
Amortized cost, Greater than or Equal to 12 Months	6,747
Unrealized loss, Greater than or Equal to 12 Months	$ (189)
Number of positions | Positions	20	8
Fair value	$ 89,246	$ 38,740
Amortized cost	94,450	38,943
Unrealized loss	$ (5,204)	$ (203)

Investments in Debt Securitie55

Investments in Debt Securities, Available-for-Sale - Summary of Maturities of Debt Securities (Detail) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Investments Debt And Equity Securities [Abstract]
Amortized cost, Available-for-sale, Due after five years through ten years	$ 11,037	$ 46,870
Amortized cost, Available-for-sale, Due after ten years through fifteen years	88,473
Investments in debt securities—amortized cost	99,510	46,870
Fair value, Available-for-sale, Due after five years through ten years	10,797	46,881
Fair value, Available-for-sale, Due after ten years through fifteen years	83,531
Fair value	$ 94,328	$ 46,881

Borrowings - Credit Facilities

Borrowings - Credit Facilities - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2015USD ($)CreditFacility	Dec. 31, 2014USD ($)
Line of Credit Facility [Line Items]
Number of credit facility | CreditFacility	5
Outstanding balance of credit facility	$ 625,595,000	$ 487,768,000
Unamortized deferred financing fees	$ 41,606,000	$ 26,514,000
Maturity date of facility	Aug. 10, 2020
Wells Fargo Bank, National Association [Member] | Revolving Credit Facility, Leveraged Finance Loans [Member]
Line of Credit Facility [Line Items]
Current borrowing capacity of credit facility	$ 475,000,000
Outstanding balance of credit facility	216,100,000
Unamortized deferred financing fees	$ 6,900,000
Amortization period of credit facility	2 years
Wells Fargo Bank, National Association [Member] | Revolving Credit Facility, Asset Based Loans [Member]
Line of Credit Facility [Line Items]
Current borrowing capacity of credit facility	$ 165,000,000
Outstanding balance of credit facility	97,500,000
Unamortized deferred financing fees	$ 900,000
Amortization period of credit facility	0 years
Maturity date of facility	Dec. 7, 2017
Amount of credit facility	$ 300,000,000
Wells Fargo Bank, National Association [Member] | Revolving Credit Facility, New Equipment Lease Origination [Member]
Line of Credit Facility [Line Items]
Outstanding balance of credit facility	0
Unamortized deferred financing fees	$ 1,000,000
Maturity date of facility	Apr. 10, 2019
Amount of credit facility	$ 75,000,000
Citibank, N.A. [Member] | Revolving Credit Facility, Leveraged Finance Loans [Member]
Line of Credit Facility [Line Items]
Outstanding balance of credit facility	208,000,000
Unamortized deferred financing fees	$ 1,700,000
Amortization period of credit facility	2 years
Amount of credit facility	$ 250,000,000
DZ Bank [Member] | Revolving Credit Facility, Asset Based Loans [Member]
Line of Credit Facility [Line Items]
Outstanding balance of credit facility	104,000,000
Unamortized deferred financing fees	$ 1,300,000
Amortization period of credit facility	0 years
Maturity date of facility	Jun. 30, 2018
Amount of credit facility	$ 175,000,000
Minimum payment of credit facility	$ 2,500,000

Borrowings - Senior Notes - Add

Borrowings - Senior Notes - Additional Information (Detail) - USD ($)	Apr. 22, 2015	Sep. 30, 2015	Dec. 31, 2014
Line of Credit Facility [Line Items]
Unamortized deferred financing fees		$ 41,606,000	$ 26,514,000
7.25% Senior Notes Due 2020 [Member]
Line of Credit Facility [Line Items]
Debt instrument face amount	$ 300,000,000
Debt instrument, interest rate (percent)	7.25%
Debt instrument maturity date		May 1, 2020
Debt instrument, frequency of periodic payment		payable semi-annually on May 1 and November 1 of each year, beginning November 1, 2015.
Debt instrument redemption description		At any time prior to May 1, 2017, the Company may redeem up to 35% of the aggregate principal amount of the 2020 Notes with the net cash proceeds of certain public equity offerings at a price equal to 107.25% of the aggregate principal amount so redeemed, plus accrued and unpaid interest thereon provided that immediately following the redemption, at least 65% of the 2020 Notes that were originally issued remain outstanding and any such redemption occurs within 180 days following the closing of any such public equity offering. Additionally, at any time prior to May 1, 2017, the Company may redeem some or all of the 2020 Notes at a price equal to 100% of the aggregate principal amount, plus accrued and unpaid interest thereon and a make-whole premium. On or after May 1, 2017, the Company may redeem the 2020 Notes, in whole or in part, at redemption prices specified in the 2020 Notes plus accrued and unpaid interest thereon. In addition, if the Company undergoes a change of control, the Company will be required to make an offer to purchase each holder’s 2020 Notes at a price equal to 101% of the principal amount of the 2020 Notes, plus accrued and unpaid interest.
Percentage of principal amount, redemption price	101.00%
Percentage of principal amount to remain outstanding after redemption requirement	65.00%
Debt instrument, redemption period	180 days
Unamortized deferred financing fees		$ 6,200,000
7.25% Senior Notes Due 2020 [Member] | Debt Instrument, Redemption, Period One [Member]
Line of Credit Facility [Line Items]
Percentage of principal amount, redeemable	35.00%
Percentage of principal amount, redemption price	107.25%
7.25% Senior Notes Due 2020 [Member] | Debt Instrument, Redemption, Period Two [Member]
Line of Credit Facility [Line Items]
Percentage of principal amount, redemption price	100.00%

Borrowings - Subordinated Notes

Borrowings - Subordinated Notes (Details) - USD ($)	Dec. 04, 2014	Sep. 30, 2015	Sep. 30, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Unamortized deferred financing fees		$ 41,606,000	$ 41,606,000	$ 26,514,000
Franklin Square | Subordinated Debt [Member]
Debt Instrument [Line Items]
Debt instrument face amount	$ 200,000,000
Debt Instrument, Term (in years)	10 years
Debt Instrument, Additional amount borrowed		50,000,000
Debt instrument, remaining borrowings	$ 50,000,000
Debt instrument, increments of required borrowings	$ 25,000,000
Warrants and Rights Outstanding				$ 43,200,000
Unamortized discount		60,100,000	60,100,000
Unamortized deferred financing fees		$ 5,700,000	$ 5,700,000
Debt instrument, interest rate (percent)	8.25%
Debt Instrument, Paid-In-Kind Stated Interest Rate (percent)	8.75%
Debt instrument maturity date			Dec. 4, 2024
Franklin Square | Subordinated Debt [Member] | Debt Instrument, Redemption, Period One [Member]
Debt Instrument [Line Items]
Debt Instrument, Redemption Period With Make-Whole Premium (in years)	3 years
Franklin Square | Subordinated Debt [Member] | Debt Instrument, Redemption, Period Two [Member]
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage	103.00%
Franklin Square | Subordinated Debt [Member] | Debt Instrument, Redemption, Period Three [Member]
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage	101.00%

Borrowings - Term Debt Securiti

Borrowings - Term Debt Securitizations - Additional Information (Detail) - USD ($)

Sep. 15, 2015

Sep. 01, 2015

Mar. 20, 2015

Apr. 17, 2014

Sep. 11, 2013

Dec. 18, 2012

Jun. 30, 2007

Sep. 30, 2015

Dec. 31, 2012

Dec. 31, 2010

Dec. 31, 2009

Jun. 12, 2015

Dec. 31, 2014

Debt Instrument [Line Items]

Outstanding balance on drawn notes

$ 1,890,765,000

$ 1,193,187,000

Deferred financing costs, net

41,606,000

$ 26,514,000

2007-1 CLO Trust [Member]

Debt Instrument [Line Items]

Loans and investments provided to bankruptcy remote subsidiary

$ 600,000,000

Notes issued or additional notes to institutional investors

$ 546,000,000

546,000,000

Notes issued and retained as trust certificate percentage

100.00%

Outstanding balance on drawn notes

185,251,000

Principal collection and payments receivable of secured debt

$ 239,300,000

Collateral principal repayments maturity period

6 years

2007-1 CLO Trust [Member] | Trust Certificates [Member]

Debt Instrument [Line Items]

Notes issued or additional notes to institutional investors

$ 54,000,000

2007-1 CLO Trust [Member] | Class C [Member]

Debt Instrument [Line Items]

Notes issued or additional notes to institutional investors

$ 58,500,000

Outstanding balance on drawn notes

58,293,000

Purchase of Long Term Debt

$ 200,000

2007-1 CLO Trust [Member] | Class D [Member]

Debt Instrument [Line Items]

Notes issued or additional notes to institutional investors

27,000,000

Outstanding balance on drawn notes

21,000,000

Purchase of Long Term Debt

$ 5,000,000

$ 1,000,000

2012-2 CLO [Member]

Debt Instrument [Line Items]

Loans and investments provided to bankruptcy remote subsidiary

$ 325,900,000

Notes issued or additional notes to institutional investors

$ 263,300,000

279,600,000

Notes issued and retained as trust certificate percentage

100.00%

Outstanding balance on drawn notes

279,600,000

Principal collection and payments receivable of secured debt

$ 325,900,000

Collateral principal repayments maturity period

3 years

Deferred financing costs, net

$ 1,600,000

Collateral principal repayments expiration

2016-01

2012-2 CLO [Member] | Trust Certificates [Member]

Debt Instrument [Line Items]

Notes issued or additional notes to institutional investors

$ 62,600,000

2012-2 CLO [Member] | Class C [Member]

Debt Instrument [Line Items]

Notes issued or additional notes to institutional investors

$ 35,200,000

Outstanding balance on drawn notes

35,200,000

2012-2 CLO [Member] | Class D [Member]

Debt Instrument [Line Items]

Notes issued or additional notes to institutional investors

11,400,000

Outstanding balance on drawn notes

11,400,000

2012-2 CLO [Member] | Class E [Member]

Debt Instrument [Line Items]

Notes issued or additional notes to institutional investors

16,300,000

$ 16,300,000

Outstanding balance on drawn notes

16,300,000

2013-1 CLO [Member]

Debt Instrument [Line Items]

Loans and investments provided to bankruptcy remote subsidiary

$ 247,600,000

Notes issued or additional notes to institutional investors

$ 338,600,000

338,600,000

Notes issued and retained as trust certificate percentage

100.00%

Outstanding balance on drawn notes

334,600,000

Principal collection and payments receivable of secured debt

$ 396,000,000

Collateral principal repayments maturity period

3 years

Deferred financing costs, net

$ 3,800,000

Collateral principal repayments expiration

2016-09

2013-1 CLO [Member] | Trust Certificates [Member]

Debt Instrument [Line Items]

Notes issued or additional notes to institutional investors

$ 61,400,000

2013-1 CLO [Member] | Class C [Member]

Debt Instrument [Line Items]

Notes issued or additional notes to institutional investors

$ 36,000,000

Outstanding balance on drawn notes

36,000,000

2013-1 CLO [Member] | Class D [Member]

Debt Instrument [Line Items]

Notes issued or additional notes to institutional investors

21,000,000

Outstanding balance on drawn notes

21,000,000

2013-1 CLO [Member] | Class E [Member]

Debt Instrument [Line Items]

Notes issued or additional notes to institutional investors

6,000,000

Outstanding balance on drawn notes

6,000,000

2014-1 CLO [Member]

Debt Instrument [Line Items]

Loans and investments provided to bankruptcy remote subsidiary

$ 249,600,000

Notes issued or additional notes to institutional investors

$ 289,500,000

289,500,000

Notes issued and retained as trust certificate percentage

100.00%

Outstanding balance on drawn notes

289,500,000

Principal collection and payments receivable of secured debt

$ 348,400,000

Collateral principal repayments maturity period

4 years

Deferred financing costs, net

$ 2,700,000

Collateral principal repayments expiration

2018-04

2014-1 CLO [Member] | Trust Certificates [Member]

Debt Instrument [Line Items]

Notes issued or additional notes to institutional investors

$ 58,900,000

2014-1 CLO [Member] | Class C [Member]

Debt Instrument [Line Items]

Notes issued or additional notes to institutional investors

$ 30,250,000

Outstanding balance on drawn notes

30,250,000

2014-1 CLO [Member] | Class D [Member]

Debt Instrument [Line Items]

Notes issued or additional notes to institutional investors

23,500,000

Outstanding balance on drawn notes

23,500,000

2015-1 CLO [Member]

Debt Instrument [Line Items]

Loans and investments provided to bankruptcy remote subsidiary

$ 336,300,000

Notes issued or additional notes to institutional investors

$ 410,300,000

410,250,000

Notes issued and retained as trust certificate percentage

100.00%

Outstanding balance on drawn notes

410,250,000

Principal collection and payments receivable of secured debt

$ 496,100,000

Collateral principal repayments maturity period

4 years

Deferred financing costs, net

$ 4,100,000

Collateral principal repayments expiration

2019-04

2015-1 CLO [Member] | Trust Certificates [Member]

Debt Instrument [Line Items]

Notes issued or additional notes to institutional investors

$ 85,800,000

2015-1 CLO [Member] | Class C [Member]

Debt Instrument [Line Items]

Notes issued or additional notes to institutional investors

$ 38,500,000

Outstanding balance on drawn notes

38,500,000

2015-1 CLO [Member] | Class D [Member]

Debt Instrument [Line Items]

Notes issued or additional notes to institutional investors

33,250,000

Outstanding balance on drawn notes

33,250,000

2015-1 ABS [Member]

Debt Instrument [Line Items]

Loans and investments provided to bankruptcy remote subsidiary

$ 100,100,000

Notes issued or additional notes to institutional investors

70,000,000

70,046,000

Outstanding balance on drawn notes

63,993,000

Deferred financing costs, net

1,300,000

Amount of cash, leases and equipment loans pledged to secure notes

104,600,000

2015-1 ABS [Member] | Trust Certificates [Member]

Debt Instrument [Line Items]

Notes issued or additional notes to institutional investors

$ 40,600,000

2015-2 CLO [Member]

Debt Instrument [Line Items]

Loans and investments provided to bankruptcy remote subsidiary

$ 298,400,000

Notes issued or additional notes to institutional investors

$ 327,800,000

327,750,000

Notes issued and retained as trust certificate percentage

100.00%

Outstanding balance on drawn notes

327,750,000

Principal collection and payments receivable of secured debt

$ 397,800,000

Collateral principal repayments maturity period

4 years

Deferred financing costs, net

$ 4,100,000

Collateral principal repayments expiration

2019-08

2015-2 CLO [Member] | Trust Certificates [Member]

Debt Instrument [Line Items]

Notes issued or additional notes to institutional investors

$ 70,100,000

2015-2 CLO [Member] | Class C [Member]

Debt Instrument [Line Items]

Notes issued or additional notes to institutional investors

$ 26,250,000

Outstanding balance on drawn notes

26,250,000

2015-2 CLO [Member] | Class D [Member]

Debt Instrument [Line Items]

Notes issued or additional notes to institutional investors

28,500,000

Outstanding balance on drawn notes

28,500,000

2015-2 CLO [Member] | Class E [Member]

Debt Instrument [Line Items]

Notes issued or additional notes to institutional investors

5,000,000

Outstanding balance on drawn notes

$ 5,000,000

Borrowings - Summary of Borrowi

Borrowings - Summary of Borrowings (Detail) - USD ($)	9 Months Ended
	Sep. 30, 2015	Sep. 15, 2015	Sep. 01, 2015	Jun. 12, 2015	Mar. 20, 2015	Dec. 31, 2014	Apr. 17, 2014	Sep. 11, 2013	Dec. 18, 2012	Jun. 30, 2007
Financial Instruments Owned and Pledged as Collateral [Line Items]
Term debt securitizations	$ 1,890,765,000					$ 1,193,187,000
2007-1 CLO Trust [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued	546,000,000									$ 546,000,000
Term debt securitizations	185,251,000
2007-1 CLO Trust [Member] | Class A-1 [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued	336,500,000
Term debt securitizations	$ 62,346,000
Interest rate	Libor+0.24%
Legal final maturity	Sep. 30, 2022
Ratings (S&P/Moody's/ Fitch/DBRS)	AAA/Aaa/AAA
2007-1 CLO Trust [Member] | Class A-1 [Member] | London Interbank Offered Rate (LIBOR) [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Basis Spread on Variable Rate	0.24%
2007-1 CLO Trust [Member] | Class A-2 [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued	$ 100,000,000
Term debt securitizations	$ 19,612,000
Interest rate	Libor+0.26%
Legal final maturity	Sep. 30, 2022
Ratings (S&P/Moody's/ Fitch/DBRS)	AAA/Aaa/AAA
2007-1 CLO Trust [Member] | Class A-2 [Member] | London Interbank Offered Rate (LIBOR) [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Basis Spread on Variable Rate	0.26%
2007-1 CLO Trust [Member] | Class B [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued	$ 24,000,000
Term debt securitizations	$ 24,000,000
Interest rate	Libor+0.55%
Legal final maturity	Sep. 30, 2022
Ratings (S&P/Moody's/ Fitch/DBRS)	AA+/Aa1/AA
2007-1 CLO Trust [Member] | Class B [Member] | London Interbank Offered Rate (LIBOR) [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Basis Spread on Variable Rate	0.55%
2007-1 CLO Trust [Member] | Class C [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued	$ 58,500,000
Term debt securitizations	$ 58,293,000
Interest rate	Libor+1.30%
Legal final maturity	Sep. 30, 2022
Ratings (S&P/Moody's/ Fitch/DBRS)	A-/A2/A
2007-1 CLO Trust [Member] | Class C [Member] | London Interbank Offered Rate (LIBOR) [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Basis Spread on Variable Rate	1.30%
2007-1 CLO Trust [Member] | Class D [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued	$ 27,000,000
Term debt securitizations	$ 21,000,000
Interest rate	Libor+2.30%
Legal final maturity	Sep. 30, 2022
Ratings (S&P/Moody's/ Fitch/DBRS)	BBB-/Baa2/BBB+
2007-1 CLO Trust [Member] | Class D [Member] | London Interbank Offered Rate (LIBOR) [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Basis Spread on Variable Rate	2.30%
2012-2 CLO [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued	$ 279,600,000								$ 263,300,000
Term debt securitizations	279,600,000
2012-2 CLO [Member] | Class B [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued	26,000,000
Term debt securitizations	$ 26,000,000
Interest rate	Libor+3.25%
Legal final maturity	Jan. 20, 2023
Ratings (S&P/Moody's/ Fitch/DBRS)	Aa2/N/A
2012-2 CLO [Member] | Class C [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued	$ 35,200,000
Term debt securitizations	$ 35,200,000
Interest rate	Libor+4.25%
Legal final maturity	Jan. 20, 2023
Ratings (S&P/Moody's/ Fitch/DBRS)	A2/N/A
2012-2 CLO [Member] | Class D [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued	$ 11,400,000
Term debt securitizations	$ 11,400,000
Interest rate	Libor+6.25%
Legal final maturity	Jan. 20, 2023
Ratings (S&P/Moody's/ Fitch/DBRS)	Baa2/N/A
2012-2 CLO [Member] | Class A [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued	$ 190,700,000
Term debt securitizations	$ 190,700,000
Interest rate	Libor+1.90%
Legal final maturity	Jan. 20, 2023
Ratings (S&P/Moody's/ Fitch/DBRS)	Aaa/AAA
2012-2 CLO [Member] | Class E [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued	$ 16,300,000			$ 16,300,000
Term debt securitizations	$ 16,300,000
Interest rate	Libor+6.75%
Legal final maturity	Jan. 20, 2023
Ratings (S&P/Moody's/ Fitch/DBRS)	Ba1/N/A
Two Thousand And Twelve Two Commercial Loan Trust [Member] | Class B [Member] | London Interbank Offered Rate (LIBOR) [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Basis Spread on Variable Rate	3.25%
Two Thousand And Twelve Two Commercial Loan Trust [Member] | Class C [Member] | London Interbank Offered Rate (LIBOR) [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Basis Spread on Variable Rate	4.25%
Two Thousand And Twelve Two Commercial Loan Trust [Member] | Class D [Member] | London Interbank Offered Rate (LIBOR) [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Basis Spread on Variable Rate	6.25%
Two Thousand And Twelve Two Commercial Loan Trust [Member] | Class A [Member] | London Interbank Offered Rate (LIBOR) [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Basis Spread on Variable Rate	1.90%
Two Thousand And Twelve Two Commercial Loan Trust [Member] | Class E [Member] | London Interbank Offered Rate (LIBOR) [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Basis Spread on Variable Rate	6.75%
2013-1 CLO [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued	$ 338,600,000							$ 338,600,000
Term debt securitizations	334,600,000
2013-1 CLO [Member] | Class B [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued	38,000,000
Term debt securitizations	$ 38,000,000
Interest rate	Libor+2.30%
Legal final maturity	Sep. 20, 2023
Ratings (S&P/Moody's/ Fitch/DBRS)	AA/N/A
2013-1 CLO [Member] | Class C [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued	$ 36,000,000
Term debt securitizations	$ 36,000,000
Interest rate	Libor+3.80%
Legal final maturity	Sep. 20, 2023
Ratings (S&P/Moody's/ Fitch/DBRS)	A/N/A
2013-1 CLO [Member] | Class D [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued	$ 21,000,000
Term debt securitizations	$ 21,000,000
Interest rate	Libor+4.55%
Legal final maturity	Sep. 20, 2023
Ratings (S&P/Moody's/ Fitch/DBRS)	BBB/N/A
2013-1 CLO [Member] | Class E [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued	$ 6,000,000
Term debt securitizations	$ 6,000,000
Interest rate	Libor+5.30%
Legal final maturity	Sep. 20, 2023
Ratings (S&P/Moody's/ Fitch/DBRS)	BBB-/N/A
2013-1 CLO [Member] | Class A-T [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued	$ 202,600,000
Term debt securitizations	$ 202,600,000
Interest rate	Libor+1.65%
Legal final maturity	Sep. 20, 2023
Ratings (S&P/Moody's/ Fitch/DBRS)	AAA/Aaa
2013-1 CLO [Member] | Class A-R [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued	$ 35,000,000
Term debt securitizations	$ 31,000,000
Legal final maturity	Sep. 20, 2023
Ratings (S&P/Moody's/ Fitch/DBRS)	AAA/Aaa
Two Thousand And Thirteen One Commercial Loan Trust [Member] | Class B [Member] | London Interbank Offered Rate (LIBOR) [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Basis Spread on Variable Rate	2.30%
Two Thousand And Thirteen One Commercial Loan Trust [Member] | Class C [Member] | London Interbank Offered Rate (LIBOR) [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Basis Spread on Variable Rate	3.80%
Two Thousand And Thirteen One Commercial Loan Trust [Member] | Class D [Member] | London Interbank Offered Rate (LIBOR) [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Basis Spread on Variable Rate	4.55%
Two Thousand And Thirteen One Commercial Loan Trust [Member] | Class E [Member] | London Interbank Offered Rate (LIBOR) [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Basis Spread on Variable Rate	5.30%
Two Thousand And Thirteen One Commercial Loan Trust [Member] | Class A-T [Member] | London Interbank Offered Rate (LIBOR) [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Basis Spread on Variable Rate	1.65%
2014-1 CLO [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued	$ 289,500,000						$ 289,500,000
Term debt securitizations	289,500,000
2014-1 CLO [Member] | Class C [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued	30,250,000
Term debt securitizations	$ 30,250,000
Interest rate	Libor+3.60%
Legal final maturity	Apr. 20, 2025
Ratings (S&P/Moody's/ Fitch/DBRS)	A2
2014-1 CLO [Member] | Class C [Member] | London Interbank Offered Rate (LIBOR) [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Basis Spread on Variable Rate	3.60%
2014-1 CLO [Member] | Class D [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued	$ 23,500,000
Term debt securitizations	$ 23,500,000
Interest rate	Libor+4.75%
Legal final maturity	Apr. 20, 2025
Ratings (S&P/Moody's/ Fitch/DBRS)	Baa3
2014-1 CLO [Member] | Class D [Member] | London Interbank Offered Rate (LIBOR) [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Basis Spread on Variable Rate	4.75%
2014-1 CLO [Member] | Class A [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued	$ 202,500,000
Term debt securitizations	$ 202,500,000
Interest rate	Libor+1.80%
Legal final maturity	Apr. 20, 2025
Ratings (S&P/Moody's/ Fitch/DBRS)	Aaa
2014-1 CLO [Member] | Class A [Member] | London Interbank Offered Rate (LIBOR) [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Basis Spread on Variable Rate	1.80%
2014-1 CLO [Member] | Class B-1 [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued	$ 20,000,000
Term debt securitizations	$ 20,000,000
Interest rate	Libor+2.60%
Legal final maturity	Apr. 20, 2025
Ratings (S&P/Moody's/ Fitch/DBRS)	Aa2
2014-1 CLO [Member] | Class B-2 [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued	$ 13,250,000
Term debt securitizations	$ 13,250,000
Legal final maturity	Apr. 20, 2025
Ratings (S&P/Moody's/ Fitch/DBRS)	Aa2
Accrue interest at fixed rate	4.902%
2014-1 CLO [Member] | CLO Class B-1 [Member] | London Interbank Offered Rate (LIBOR) [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Basis Spread on Variable Rate	2.60%
2015-1 CLO [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued	$ 410,250,000				$ 410,300,000
Term debt securitizations	410,250,000
2015-1 CLO [Member] | Class A-1 [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued	253,500,000
Term debt securitizations	$ 253,500,000
Interest rate	Libor+1.80%
Basis Spread on Variable Rate	1.80%
Legal final maturity	Jan. 20, 2027
Ratings (S&P/Moody's/ Fitch/DBRS)	Aaa/AAA
2015-1 CLO [Member] | Class A-2 [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued	$ 35,000,000
Term debt securitizations	$ 35,000,000
Legal final maturity	Jan. 20, 2027
Ratings (S&P/Moody's/ Fitch/DBRS)	Aaa/AAA
2015-1 CLO [Member] | Class A-2 [Member] | London Interbank Offered Rate (LIBOR) [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Basis Spread on Variable Rate	1.65%
2015-1 CLO [Member] | Class A-2 [Member] | London Interbank Offered Rate (LIBOR) [Member] | After March 20, 2017
Financial Instruments Owned and Pledged as Collateral [Line Items]
Basis Spread on Variable Rate	2.00%
2015-1 CLO [Member] | Class B [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued	$ 50,000,000
Term debt securitizations	$ 50,000,000
Interest rate	Libor+2.80%
Basis Spread on Variable Rate	2.80%
Legal final maturity	Jan. 20, 2027
Ratings (S&P/Moody's/ Fitch/DBRS)	Aa2/ N/A
2015-1 CLO [Member] | Class C [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued	$ 38,500,000
Term debt securitizations	$ 38,500,000
Interest rate	Libor+3.85%
Basis Spread on Variable Rate	3.85%
Legal final maturity	Jan. 20, 2027
Ratings (S&P/Moody's/ Fitch/DBRS)	A2/N/A
2015-1 CLO [Member] | Class D [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued	$ 33,250,000
Term debt securitizations	$ 33,250,000
Interest rate	Libor+5.50%
Basis Spread on Variable Rate	5.50%
Legal final maturity	Jan. 20, 2027
Ratings (S&P/Moody's/ Fitch/DBRS)	Baa3/N/A
2015-1 ABS [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued	$ 70,046,000		$ 70,000,000
Term debt securitizations	63,993,000
2015-1 ABS [Member] | Class A [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued	70,046,000
Term debt securitizations	$ 63,993,000
Basis Spread on Variable Rate	3.27%
Legal final maturity	Apr. 15, 2019
Ratings (S&P/Moody's/ Fitch/DBRS)	AA
2015-2 CLO [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued	$ 327,750,000	$ 327,800,000
Term debt securitizations	327,750,000
2015-2 CLO [Member] | Class A-1 [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued	205,000,000
Term debt securitizations	$ 205,000,000
Interest rate	Libor+2.00%
Legal final maturity	Aug. 25, 2027
Ratings (S&P/Moody's/ Fitch/DBRS)	Aaa/AAA
2015-2 CLO [Member] | Class A-1 [Member] | London Interbank Offered Rate (LIBOR) [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Basis Spread on Variable Rate	2.80%
2015-2 CLO [Member] | Class A-2 [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued	$ 23,000,000
Term debt securitizations	$ 23,000,000
Legal final maturity	Aug. 25, 2027
Ratings (S&P/Moody's/ Fitch/DBRS)	Aaa/AAA
Accrue interest at fixed rate	3.461%
2015-2 CLO [Member] | Class B [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued	$ 40,000,000
Term debt securitizations	$ 40,000,000
Interest rate	Libor+2.90%
Legal final maturity	Aug. 25, 2027
Ratings (S&P/Moody's/ Fitch/DBRS)	Aa2/ N/A
2015-2 CLO [Member] | Class B [Member] | London Interbank Offered Rate (LIBOR) [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Basis Spread on Variable Rate	2.90%
2015-2 CLO [Member] | Class C [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued	$ 26,250,000
Term debt securitizations	$ 26,250,000
Interest rate	Libor+3.95%
Legal final maturity	Aug. 25, 2027
Ratings (S&P/Moody's/ Fitch/DBRS)	A2/N/A
2015-2 CLO [Member] | Class C [Member] | London Interbank Offered Rate (LIBOR) [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Basis Spread on Variable Rate	3.95%
2015-2 CLO [Member] | Class D [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued	$ 28,500,000
Term debt securitizations	$ 28,500,000
Interest rate	Libor+5.25%
Legal final maturity	Aug. 25, 2027
Ratings (S&P/Moody's/ Fitch/DBRS)	Baa3/N/A
2015-2 CLO [Member] | Class D [Member] | London Interbank Offered Rate (LIBOR) [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Basis Spread on Variable Rate	5.25%
2015-2 CLO [Member] | Class E [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued	$ 5,000,000
Term debt securitizations	$ 5,000,000
Interest rate	Libor+7.50%
Legal final maturity	Aug. 25, 2027
Ratings (S&P/Moody's/ Fitch/DBRS)	Ba3/N/A
2015-2 CLO [Member] | Class E [Member] | London Interbank Offered Rate (LIBOR) [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Basis Spread on Variable Rate	7.50%

Borrowings - Corporate Credit F

Borrowings - Corporate Credit Facility - Additional Information 1 (Detail)	Jun. 03, 2013USD ($)borrowing	Sep. 30, 2015USD ($)	Dec. 31, 2014USD ($)
Line of Credit Facility [Line Items]
Outstanding balance of credit facility		$ 625,595,000	$ 487,768,000
Fortress Credit Corp [Member] | Corporate Credit Facility
Line of Credit Facility [Line Items]
Amount of credit facility	$ 238,500,000
Number of subsequent borrowings | borrowing	3
Fortress Credit Corp [Member] | Existing Notes
Line of Credit Facility [Line Items]
Outstanding balance of credit facility	$ 100,000,000
Fortress Credit Corp [Member] | Initial Notes
Line of Credit Facility [Line Items]
Outstanding balance of credit facility	98,500,000
Fortress Credit Corp [Member] | Delay Draw Term A [Member]
Line of Credit Facility [Line Items]
Outstanding balance of credit facility	5,000,000
Fortress Credit Corp [Member] | Delay Draw Term B [Member]
Line of Credit Facility [Line Items]
Outstanding balance of credit facility	25,000,000
Fortress Credit Corp [Member] | Term C Loan [Member]
Line of Credit Facility [Line Items]
Outstanding balance of credit facility	$ 10,000,000

Repurchase Agreements - Schedul

Repurchase Agreements - Schedule of Loans Sold Under Agreements to Repurchase (Detail) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Assets Sold under Agreements to Repurchase [Line Items]
Outstanding at end of period	$ 137,640	$ 57,227
Loans [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Outstanding at end of period	$ 137,640	$ 57,227
Weighted average rate at end of period (percent)	3.56%	5.16%

Repurchase Agreements - Additio

Repurchase Agreements - Additional Information (Detail) - USD ($)	Oct. 02, 2013	Jun. 07, 2011	Sep. 30, 2015	Dec. 31, 2014
Assets Sold under Agreements to Repurchase [Line Items]
Unamortized deferred financing fees			$ 41,606,000	$ 26,514,000
Outstanding at end of period			$ 137,640,000	$ 57,227,000
Loans [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Weighted average rate at end of period (percent)			3.56%	5.16%
Outstanding at end of period			$ 137,640,000	$ 57,227,000
Macquarie Bank Limited [Member] | Loans [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Debt Instrument, Term (in years)		5 years
Financing arrangement, commercial mortgage loans sold to Macquarie		$ 68,000,000
Commercial mortgage loans repurchase extension period (in years)	1 year
Additional advances for repurchase of loans	$ 25,500,000
Additional advances for existing eligible assets (up to)	15,000,000
Unrestricted cash received from principal payment released	$ 41,100,000
Weighted average rate at end of period (percent)			5.21%
Unamortized deferred financing fees			$ 600,000
Outstanding at end of period			42,400,000
Principal payments			14,800,000
Deutsche Bank AG [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Outstanding at end of period			12,200,000
Citigroup Global Markets [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Outstanding at end of period			15,200,000
JP Morgan Chase Bank [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Outstanding at end of period			$ 67,800,000

Stockholders' Equity - Schedule

Stockholders' Equity - Schedule of Authorized Capital (Detail) - shares	Sep. 30, 2015	Dec. 31, 2014
Equity [Abstract]
Preferred stock, shares authorized	5,000,000	5,000,000
Common stock, shares authorized	145,000,000	145,000,000
Preferred stock, shares outstanding	0	0
Common stock, shares outstanding	45,846,553	46,620,474

Stockholders' Equity - Addition

Stockholders' Equity - Additional Information (Detail) - USD ($)

Mar. 24, 2015

Dec. 22, 2014

Jul. 31, 2014

Sep. 30, 2015

Sep. 30, 2014

Sep. 30, 2015

Sep. 30, 2014

Jan. 23, 2015

Dec. 31, 2014

Dec. 04, 2014

Aug. 13, 2014

May. 05, 2014

Dec. 13, 2006

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Preferred stock, shares authorized

5,000,000

5,000,000

5,000,000

Preferred stock, par value (in dollars per share)

$ 0.01

$ 0.01

$ 0.01

Repurchase of stock, shares

1,000,000

1,000,000

1,519,615

892,911

Repurchase of stock, value

$ 10,300,000

$ 10,200,000

Common stock authorized to repurchase (up to)

$ 10,000,000

$ 20,000,000

Franklin Square Capital Partners [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Number of common shares called by the issued warrants

2,500,000

9,500,000

Number of shares called by each warrant

1

Purchase price of common stock called by warrants (in dollars per share)

$ 12.62

Weighted Average [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Common stock weighted average price per share (in dollars per share)

$ 13.13

$ 11.20

Options [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Preferred stock, shares authorized

5,000,000

Preferred stock, par value (in dollars per share)

$ 0.01

Shares subject to stock option, description

not be less than 100% of the fair market value of the common stock on the date of the grant

Options [Member] | Minimum [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Purchase price of common stock as a percentage of fair market value

100.00%

Restricted Stock [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Stock-based compensation expense

$ 800,000

$ 600,000

$ 2,500,000

$ 1,800,000

Unrecognized compensation cost

$ 3,100,000

$ 3,100,000

Weighted average recognition period for unrecognized compensation cost

3 years

Restricted Stock [Member] | 2006 Incentive Plan [Member] | Certain Employees [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Shares of restricted stock issued

355,876

Restricted Stock [Member] | 2006 Incentive Plan [Member] | Non-Employee Members of the Board of Directors [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Shares of restricted stock issued

51,352

Stockholders' Equity - Schedu66

Stockholders' Equity - Schedule of Restricted Stock Activity (Detail) - Restricted Stock [Member] $ in Thousands	9 Months Ended
	Sep. 30, 2015USD ($)shares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Shares, Non-vested, Beginning balance | shares	315,338
Shares, Granted | shares	407,228
Shares, Vested | shares	(218,999)
Shares, Forfeited | shares	(2,213)
Shares, Non-vested, Ending balance | shares	501,354
Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Grant Date Fair Value [Roll Forward]
Weighted average grant-date fair value, Non-vested, Beginning balance	$ 4,091
Weighted average grant-date fair value, Granted	4,322
Weighted average grant-date fair value, Vested	(2,700)
Weighted average grant-date fair value, Forfeited	(27)
Weighted average grant-date fair value, Non-vested, Ending balance	$ 5,686

Stockholders' Equity - Schedu67

Stockholders' Equity - Schedule of Stock Option Activity (Detail) - Stock Options [Member]	9 Months Ended
	Sep. 30, 2015shares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Options Outstanding as of December 31, 2014	4,628,439
Exercised	(384,332)
Forfeited	(17,815)
Outstanding as of September 30, 2015	4,226,292
Vested as of September 30, 2015	4,226,292
Exercisable as of September 30, 2015	4,226,292

Earnings Per Share - Computatio

Earnings Per Share - Computations of Basic and Diluted Income Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Dilutive and Antidilutive Securities Associated with Computation of Earnings Per Share [Line Items]
Net income	$ 5,142	$ 5,020	$ 12,681	$ 9,368
Net income allocated to participating securities - basic and diluted	57	33	137	65
Net income allocated to common shareholders - basic and diluted	$ 5,085	$ 4,987	$ 12,544	$ 9,303
Denominator for basic earnings per common share	45,745	47,900	46,139	48,501
Total weighted average diluted shares	48,239	50,803	48,705	51,897
Basic	$ 0.11	$ 0.10	$ 0.27	$ 0.19
Diluted	$ 0.11	$ 0.10	$ 0.26	$ 0.18
Options [Member]
Dilutive and Antidilutive Securities Associated with Computation of Earnings Per Share [Line Items]
Potentially dilutive securities-options (in shares)	2,494	2,903	2,566	3,278
Warrants [Member]
Dilutive and Antidilutive Securities Associated with Computation of Earnings Per Share [Line Items]
Potentially dilutive securities-options (in shares)				118

Earnings Per Share - Additional

Earnings Per Share - Additional Information (Detail) - shares	3 Months Ended	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2015
Warrants [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Warrants excluded from earnings per share calculation due to anti-dilutive effect	12,000,000	12,000,000

Variable Interest Entities - Un

Variable Interest Entities - Unconsolidated Variable Interest Entities (Details) - USD ($)	Sep. 30, 2015	Dec. 31, 2014
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Unconsolidated VIE assets	$ 807,370,000	$ 400,000,000
Unconsolidated VIE liabilities	729,046,000	368,750,000
Maximum risk of loss	$ 24,566,000	$ 1,047,000

Variable Interest Entities - Ad

Variable Interest Entities - Additional Information (Detail) - USD ($)	Jun. 26, 2014	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2013	Dec. 31, 2014	Jun. 30, 2014	Apr. 04, 2013
Variable Interest Entity [Line Items]
Interest expense		$ 31,345,000	$ 14,304,000	$ 84,764,000	$ 40,673,000
Fund excess cash distributed to institutional investor				700,000		$ 600,000
Deferred financing costs, net		$ 41,606,000		$ 41,606,000			$ 26,514,000
Class B Notes [Member]
Variable Interest Entity [Line Items]
Interest expense					700,000
NewStar Arlington Senior Loan Program LLC [Member]
Variable Interest Entity [Line Items]
Term debt securitization	$ 409,400,000
Deferred financing costs, net								$ 1,100,000
NewStar Arlington Senior Loan Program LLC [Member] | Class B Notes [Member]
Variable Interest Entity [Line Items]
Variable funding notes									$ 28,000,000
Wells Fargo [Member] | Class A Notes [Member]
Variable Interest Entity [Line Items]
Variable funding notes									$ 147,000,000
Consolidated Variable Interest Entity [Member]
Variable Interest Entity [Line Items]
Management fee					500,000
Interest expense					$ 2,865,000

Financial Instruments with Of72

Financial Instruments with Off-Balance Sheet Risk - Additional Information (Detail) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Concentration Risk [Line Items]
Interest receivable, net	$ 9,668,000	$ 7,477,000
Cash collateral on deposit with custodian	53,738,000	38,975,000
Total Return Swap [Member]
Concentration Risk [Line Items]
Fair value disclosure, underlying loan portfolio	160,800	109,200
Interest receivable, net	1,600,000	100,000
Cash collateral on deposit with custodian	51,800,000	39,000,000
Unrealized Gain (Loss) on Derivatives	$ (1,800,000)	$ (900,000)
Interest rate description	Interest accrues at one-month LIBOR+1.60% per annum.
Total Return Swap [Member] | London Interbank Offered Rate (LIBOR) [Member]
Concentration Risk [Line Items]
Basis spread on variable rate (percent)	1.60%

Financial Instruments with Of73

Financial Instruments with Off-Balance Sheet Risk - Financial Instruments with Off-Balance Sheet Risk (Detail) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Unused Lines of Credit [Member]
Concentration Risk [Line Items]
Financial instruments with off-balance sheet risk	$ 484,721	$ 317,583
Standby Letters of Credit [Member]
Concentration Risk [Line Items]
Financial instruments with off-balance sheet risk	$ 8,082	$ 7,911

Fair Value - Assets and Liabili

Fair Value - Assets and Liabilities Measured at Fair Value on Recurring and Nonrecurring Basis (Detail) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments in debt securities, available-for-sale	$ 94,328	$ 46,881
Loans, held-for-sale	427,418	200,569
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, held-for-sale	427,418	200,569
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments in debt securities, available-for-sale	94,328	46,881
TRS	(242)	(740)
Total assets recorded at fair value on a recurring basis	94,086	46,141
Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
TRS	(242)	(740)
Total assets recorded at fair value on a recurring basis	(242)	(740)
Fair Value, Measurements, Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments in debt securities, available-for-sale	94,328	46,881
Total assets recorded at fair value on a recurring basis	94,328	46,881
Nonrecurring Basis [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net	27,698	27,719
Loans, held-for-sale	9,910	3,973
Total assets recorded at fair value on a nonrecurring basis	37,608	31,692
Nonrecurring Basis [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, held-for-sale	9,910	3,973
Total assets recorded at fair value on a nonrecurring basis	9,910	3,973
Nonrecurring Basis [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, net	27,698	27,719
Total assets recorded at fair value on a nonrecurring basis	$ 27,698	$ 27,719

Fair Value - Additional Informa

Fair Value - Additional Information (Detail) - USD ($)	3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest receivable	$ 9,668,000	$ 9,668,000	$ 7,477,000
Provision for credit losses related to loans, net	1,600,000	7,100,000	22,200,000
Collateral-Dependent Commercial Real Estate Loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Provision for credit losses related to loans, net		100,000	100,000
Total Return Swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
TRS	(200,000)	(200,000)	(800,000)
Interest receivable	1,600,000	1,600,000	100,000
Unrealized Gain (Loss) on Derivatives		(1,800,000)	(900,000)
Maximum [Member] | Total Return Swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notional amount	$ 175,000,000	$ 175,000,000	$ 125,000,000

Fair Value - Summary of Signifi

Fair Value - Summary of Significant Unobservable Inputs and Valuation Techniques (Detail) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value	$ 122,026	$ 74,600
Investments in Debt Securities, Available-for-Sale [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value	$ 94,328	$ 46,881
Valuation Techniques	Third-party pricing	Third-party pricing
Unobservable Input	Pricing assumptions such as prepayment rates, interest rates, loss assumptions, cash flow projections, and comparisons to similar financial instruments	Pricing assumptions such as prepayment rates, interest rates, loss assumptions, cash flow projections, and comparisons to similar financial instruments
Loans Receivable [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value	$ 27,698	$ 27,719
Valuation Techniques	Market comparables Valuation model	Market comparables Valuation model
Unobservable Input	Cost to sell Marketability discount	Cost to sell Marketability discount
Loans Receivable [Member] | Minimum [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value discount rate range - cost to sell (percent)	3.00%	3.00%
Fair value discount rate range - marketability discount (as a percent)	5.00%	5.00%
Loans Receivable [Member] | Maximum [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value discount rate range - cost to sell (percent)	7.00%	7.00%
Fair value discount rate range - marketability discount (as a percent)	30.00%	30.00%

Fair Value - Reconciliation of

Fair Value - Reconciliation of Financial Instruments Measured on Recurring Basis and Classified as Level 3 Inputs (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance			$ 74,600
Ending Balance	$ 122,026		122,026
Investments in Debt Securities, Available-for-Sale [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	108,454	$ 16,545	46,881	$ 22,198
Included in earnings	376	55	620	349
Included in other comprehensive income	(4,365)	(186)	(5,193)	(133)
Purchases	22,863	4,609	85,020	4,609
Settlements	(33,000)		(33,000)	(6,000)
Ending Balance	$ 94,328	$ 21,023	$ 94,328	$ 21,023

Fair Value - Carrying Amounts a

Fair Value - Carrying Amounts and Estimated Fair Values of Company's Financial Instruments (Detail) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014	Sep. 30, 2014	Dec. 31, 2013
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents, Carrying amount	$ 57,472	$ 33,033	$ 111,611	$ 43,401
Restricted cash, Carrying amount	140,854	95,411
Cash collateral on deposit with custodian, Carrying amount	53,738	38,975
Loans held-for-sale, Carrying amount	427,418	200,569
Loans and leases, net, Carrying amount	2,991,370	2,305,896
Investments in debt securities, available-for-sale	94,328	46,881
Other assets, Carrying amount	11,227	15,613
Credit facilities, Carrying amount	625,595	487,768
Term debt securitizations	1,890,765	1,193,187
Repurchase agreements	137,640	57,227
Senior notes	300,000
Corporate debt, Carrying amount		238,500
Subordinated notes, Carrying amount	189,852	156,831
Loans held-for-sale, Fair value	427,418	200,569
Loans and leases, net, Fair value	3,016,543	2,314,271
Other assets, Fair value	11,227	15,613
Credit facilities, Fair value	625,595	487,768
Term debt, Fair value	1,880,704	1,163,803
Repurchase agreements, Fair value	142,337	63,507
Senior notes, Fair value	297,930
Subordinated notes, Fair value	253,282	184,087
Consolidated Entities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents, Carrying amount	57,472	33,033
Restricted cash, Carrying amount	140,854	95,411
Cash collateral on deposit with custodian, Carrying amount	53,738	38,975
Loans held-for-sale, Carrying amount	427,418	200,569
Loans and leases, net, Carrying amount	2,991,370	2,305,896
Investments in debt securities, available-for-sale	94,328	46,881
Other assets, Carrying amount	11,227	15,613
Credit facilities, Carrying amount	625,595	487,768
Term debt securitizations	1,890,765	1,193,187
Repurchase agreements	137,640	57,227
Senior notes	300,000
Corporate debt, Carrying amount		238,500
Subordinated notes, Carrying amount	189,852	156,831
Cash and cash equivalents, Fair value	57,472	33,033
Restricted cash, Fair value	140,854	95,411
Cash collateral on deposit with custodian, Fair value	53,738	38,975
Loans held-for-sale, Fair value	427,418	200,569
Loans and leases, net, Fair value	3,016,543	2,314,271
Other assets, Fair value	11,227	15,613
Credit facilities, Fair value	625,595	487,768
Term debt, Fair value	1,880,704	1,163,803
Repurchase agreements, Fair value	142,337	63,507
Senior notes, Fair value	297,930
Corporate debt, Fair value		238,500
Subordinated notes, Fair value	$ 253,382	$ 184,087

Fair Value - Carrying Amounts,

Fair Value - Carrying Amounts, Estimated Fair Values and Placement in Fair Value Hierarchy of Financial Instruments (Detail) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans and leases, net, Carrying amount	$ 2,991,370	$ 2,305,896
Loans held-for-sale, Carrying amount	427,418	200,569
Other assets, Carrying amount	11,227	15,613
Credit facilities, Carrying amount	625,595	487,768
Term debt securitizations	1,890,765	1,193,187
Repurchase agreements	137,640	57,227
Senior notes	300,000
Subordinated notes, Carrying amount	189,852	156,831
Loans and leases, net, Fair value	3,016,543	2,314,271
Loans held-for-sale, Fair value	427,418	200,569
Other assets, Fair value	11,227	15,613
Credit facilities, Fair value	625,595	487,768
Term debt, Fair value	1,880,704	1,163,803
Repurchase agreements, Fair value	142,337	63,507
Senior notes, Fair value	297,930
Subordinated notes, Fair value	253,282	184,087
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held-for-sale, Fair value	427,418	200,569
Credit facilities, Fair value	625,595	487,768
Term debt, Fair value	1,880,704	1,163,803
Repurchase agreements, Fair value	142,337	63,507
Senior notes, Fair value	297,930
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans and leases, net, Fair value	3,016,543	2,314,271
Other assets, Fair value	11,227	15,613
Subordinated notes, Fair value	253,282	$ 184,087
Loans Receivable Excluding Real Estate Loans With Negative Credit Mark [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans and leases, net, Carrying amount	$ 2,991,370

Related-Party Transactions - Ad

Related-Party Transactions - Additional Information (Detail) - USD ($)	Jan. 15, 2015	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Related Party Transaction [Line Items]
Asset management income		$ 1,019,000	$ 488,000	$ 2,954,000	$ 543,000
NewStar Clarendon Fund CLO LLC [Member] | Term Debt Securitization [Member]
Related Party Transaction [Line Items]
Debt instrument face amount	$ 400,000,000
Related party transaction, investment held, percentage	5.00%
Related party transaction, investment held, amount	$ 20,400,000
NewStar Clarendon Fund CLO LLC [Member] | Collateral Management Agreement [Member]
Related Party Transaction [Line Items]
Expenses from transactions with related party		500,000		1,500,000
Arlington Program [Member] | Collateral Management Agreement [Member]
Related Party Transaction [Line Items]
Expenses from transactions with related party		500,000		1,500,000
Asset management income			100,000
NewStar Credit Opportunities Fund, Ltd. [Member] | Investment Management Agreement [Member]
Related Party Transaction [Line Items]
Asset management income		$ 100,000	$ 0	$ 100,000	$ 100,000

Subsequent Event - Additional I

Subsequent Event - Additional Information (Detail) - USD ($)	Oct. 26, 2015	Oct. 07, 2015	Sep. 30, 2015	Dec. 31, 2014	Aug. 13, 2014	May. 05, 2014
Subsequent Event [Line Items]
Company effective date			Oct. 7, 2015
Common stock authorized to repurchase (up to)					$ 10,000,000	$ 20,000,000
Subordinated notes			$ 189,852,000	$ 156,831,000
Subsequent Event [Member]
Subsequent Event [Line Items]
Common stock authorized to repurchase (up to)		$ 5,000,000
Expiration of repurchase program		Mar. 31, 2016
Subordinated notes	$ 275,000,000
Subsequent Event [Member] | Subordinated Debt [Member]
Subsequent Event [Line Items]
Debt Instrument, Additional amount borrowed	25,000,000
Debt instrument, remaining borrowings	$ 25,000,000
Subsequent Event [Member] | Feingold O' Keeffe Capital LLC [Member]
Subsequent Event [Line Items]
Percentage of outstanding limited liability interests acquired		100.00%
Purchase price in cash		$ 20,900,000