First Eagle Private Credit (NEWS) 10-K 2 Mar 17 2016 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2016	Feb. 27, 2017	Jun. 30, 2016
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2016
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	FY
Trading Symbol	NEWS
Entity Registrant Name	NewStar Financial, Inc.
Entity Central Index Key	1,373,561
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Accelerated Filer
Entity Common Stock, Share Outstanding		42,675,647
Entity Public Float			$ 194,956,040

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Assets:
Cash and cash equivalents	$ 154,480	$ 35,933
Restricted cash	262,643	153,992
Cash collateral on deposit with custodians	7,564	61,081
Investments in debt securities, available-for-sale	119,307	94,177
Loans held-for-sale, net	144,060	478,785
Loans and leases, net (including loans at fair value of $403,745 and $0, respectively)	3,239,191	3,134,072
Interest receivable	14,622	13,932
Property and equipment, net	274	638
Deferred income taxes, net	40,807	33,133
Income tax receivable		5,342
Goodwill	17,884	17,884
Identified intangible assets, net	572	910
Other assets	39,188	21,504
Total assets	4,040,592	4,051,383
Liabilities:
Credit facilities, net	445,493	832,686
Term debt securitizations, net	2,195,064	1,821,519
Senior notes, net	373,919	372,153
Subordinated notes, net	241,390	209,509
Repurchase agreements, net	55,046	96,224
Accrued interest payable	21,319	18,073
Income tax payable	12,562
Other liabilities	48,377	41,741
Total liabilities	3,393,170	3,391,905
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 2016 and 2015; Shares outstanding 42,820,198 in 2016 and 46,527,288 in 2015	428	465
Additional paid-in capital	743,783	742,970
Retained earnings	59,577	31,353
Common stock held in treasury, at cost $0.01 par value; 14,352,904 in 2016 and 9,154,548 in 2015	(152,720)	(109,245)
Accumulated other comprehensive loss, net	(3,646)	(6,065)
Total stockholders’ equity	647,422	659,478
Total liabilities and stockholders’ equity	$ 4,040,592	$ 4,051,383

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Statement Of Financial Position [Abstract]
Loans at fair value	$ 403,745	$ 0
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	42,820,198	46,527,288
Treasury stock, par value (in dollars per share)	$ 0.01	$ 0.01
Treasury stock, shares	14,352,904	9,154,548

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Net interest income:
Interest income	$ 250,716	$ 201,785	$ 136,171
Interest expense	161,345	120,986	57,775
Net interest income	89,371	80,799	78,396
Provision for credit losses	27,541	18,387	27,108
Net interest income after provision for credit losses	61,830	62,412	51,288
Non-interest income:
Asset management income	13,399	6,661	1,054
Fee income	7,278	13,508	2,467
Realized loss on derivatives, net	(184)	(29)	(39)
Realized (loss) gain on sale of loans, net	(2,095)	467	(230)
Other miscellaneous income, net	10,352	5,271	8,801
Loss on total return swap	(6,062)	(4,953)	(863)
Gain (loss) on loans held-for-sale, net	2,406	(2,568)	26
Gain on sale of divested business and assets	29,166
Total non-interest income	54,260	18,357	11,216
Operating expenses:
Compensation and benefits	43,344	35,909	30,383
General and administrative expenses	24,095	16,019	15,133
Total operating expenses	67,439	51,928	45,516
Operating income before income taxes	48,651	28,841	16,988
Results of Consolidated Variable Interest Entity:
Interest income	250,716	201,785	136,171
Interest expense	161,345	120,986	57,775
Operating expenses	67,439	51,928	45,516
Income before income taxes	48,651	28,841	18,079
Income tax expense	20,427	11,951	7,485
Net income	$ 28,224	$ 16,890	$ 10,594
Basic Earnings per share	$ 0.61	$ 0.37	$ 0.22
Diluted Earnings per share	$ 0.61	$ 0.35	$ 0.21
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

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 28,224	$ 16,890	$ 10,594
Other comprehensive income (loss), net of tax:
Net unrealized securities gains (losses), net of tax expense (benefit) of $1,613, $(4,112) and $(401), respectively	2,329	(5,985)	(583)
Net unrealized derivative gains (losses), net of tax expense (benefit) of $62, $(33) and $(10), respectively	90	(47)	(19)
Other comprehensive income (loss)	2,419	(6,032)	(602)
Comprehensive income	$ 30,643	$ 10,858	$ 9,992

Consolidated Statements of Com6

Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Statement Of Income And Comprehensive Income [Abstract]
Tax expense (benefit) on unrealized securities gains (losses)	$ 1,613	$ (4,112)	$ (401)
Tax expense (benefit) on unrealized derivative gains (losses)	$ 62	$ (33)	$ (10)

Consolidated Statement of Chang

Consolidated Statement 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	$ 10,594			9,952			642	10,594
Other comprehensive income (loss)	(602)					(602)		(602)
Issuance of restricted stock		1	(1)
Net shares reacquired from employee transactions					(533)			(533)
Tax benefit (expense) from vesting of restricted common stock awards			1,819					1,819
Repurchase of common stock		(29)	29		(34,672)			(34,672)
Issuance of warrants			41,785					41,785
Exercise of warrants		3	15,244		(14,248)			999
Exercise of common stock options, net		4	300					304
Tax benefit (expense) from exercise of common stock awards			1,920					1,920
Reclassification of VIE dividend							587	587
Deconsolidation of VIE				1,887			$ (1,887)
Amortization of restricted common stock awards			2,532					2,532
Amortization of stock option awards			54					54
Ending Balance at Dec. 31, 2014		466	718,825	14,463	(92,724)	(33)		640,997
Net income	16,890			16,890				16,890
Other comprehensive income (loss)	(6,032)					(6,032)		(6,032)
Issuance of restricted stock		4	(4)
Net shares reacquired from employee transactions		(1)	1		(603)			(603)
Tax benefit (expense) from vesting of restricted common stock awards			(164)					(164)
Repurchase of common stock		(15)	15		(15,918)			(15,918)
Issuance of warrants			21,766					21,766
Exercise of common stock options, net		11	(2,843)					(2,832)
Tax benefit (expense) from exercise of common stock awards			2,101					2,101
Amortization of restricted common stock awards			3,273					3,273
Ending Balance at Dec. 31, 2015	659,478	465	742,970	31,353	(109,245)	(6,065)		659,478
Net income	28,224			28,224				28,224
Other comprehensive income (loss)	2,419					2,419		2,419
Issuance of restricted stock		6	(6)
Net shares reacquired from employee transactions		(1)	1		(445)			(445)
Tax benefit (expense) from vesting of restricted common stock awards			(473)					(473)
Repurchase of common stock		(51)	51		(43,030)			(43,030)
Exercise of common stock options, net		9	(1,003)					(994)
Tax benefit (expense) from exercise of common stock awards			(1,499)					(1,499)
Amortization of restricted common stock awards			3,742					3,742
Ending Balance at Dec. 31, 2016	$ 647,422	$ 428	$ 743,783	$ 59,577	$ (152,720)	$ (3,646)		$ 647,422

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Cash flows from operating activities:
Net income	$ 28,224	$ 16,890	$ 10,594
Adjustments to reconcile net income to net cash used for operations:
Provision for credit losses	27,541	18,387	27,108
Depreciation and amortization and accretion, net	(14,550)	(9,431)	(9,381)
Amortization of debt issuance costs	19,201	19,330	6,938
Equity compensation expense	3,742	3,273	2,586
Gain on sale of Business Credit	(22,511)
Gain on sale of Equipment Finance assets	(6,655)
Loss (gain) on sale of loans, net	2,095	(467)	230
Losses (gains) on other real estate owned		82	(15)
Gains on lease equipment	(798)	(601)
Gains from equity method investments, net			(1,625)
Loss from total return swap	6,062	4,953	863
Net change in deferred income taxes	(9,348)	(905)	2,573
Loans held-for-sale originated	(437,252)	(677,445)	(328,157)
Proceeds from sale and repayment of loans held-for-sale	826,815	396,661	174,985
Unrealized (gain) loss on loans held-for-sale	(2,406)	2,568
Net change in interest receivable	(2,133)	(6,455)	(62)
Net change in other assets	(12,477)	(6,970)	(10,462)
Net change in accrued interest payable	3,246	11,497	243
Net change in other liabilities	3,065	11,258	9,867
Net cash provided by (used in) operating activities	411,861	(217,375)	(110,777)
Cash flows from investing activities:
Payment for acquisition, net of cash acquired		(19,183)
Net change in restricted cash	(108,651)	(58,581)	72,509
Net change in loans and leases	(125,658)	(836,347)	(261,756)
Purchase of equity investments	(3,637)
Proceeds from sale of other real estate owned		3,211	10,276
Purchase of debt securities available-for-sale	(26,313)	(89,602)	(38,255)
Proceeds from repayments of debt securities available-for-sale	6,000	33,000	14,000
Acquisition of property and equipment	(19)	(218)	(80)
Net cash used in investing activities	(258,278)	(967,720)	(30,600)
Cash flows from financing activities:
Proceeds from exercise of stock options, net	(994)	(2,843)	300
Proceeds from exercise of warrants			999
Tax (expense) benefit from exercise of stock options	(1,499)	2,101	1,920
Tax (expense) benefit from vesting of restricted stock	(473)	(164)	1,819
Advances on credit facilities	1,574,022	2,701,016	1,557,162
Repayment of borrowings on credit facilities	(1,963,618)	(2,344,888)	(1,401,552)
Issuance of term debt	43,447	824,163	289,500
Borrowings on term debt	600,250	61,500	77,900
Repayment of borrowings on term debt	(268,684)	(241,010)	(386,587)
Borrowings on corporate debt			38,500
Repayment of corporate debt		(238,500)
Issuance of senior notes		379,208
Issuance of subordinated notes	24,500	73,500	200,000
Borrowings on repurchase agreements	19,998	139,744
Repayment of borrowings on repurchase agreements	(61,741)	(100,182)	(10,727)
Release (posting) of cash collateral	53,517	(22,106)	(38,975)
Payment of deferred financing costs	(10,286)	(27,023)	(13,451)
Purchase of treasury stock	(43,475)	(16,521)	(35,205)
Net cash (used in) provided by financing activities	(35,036)	1,187,995	131,009
Net increase (decrease) in cash during the period	118,547	2,900	(10,368)
Cash and cash equivalents at beginning of period	35,933	33,033	43,401
Cash and cash equivalents at end of period	154,480	35,933	33,033
Supplemental cash flows information:
Interest paid	158,099	109,489	57,532
Taxes paid, net of refund	13,841	12,631	2,554
Transfers of loans held-for-sale to loans, net		7,740
Transfers of loans, net to loans held-for-sale, at fair value	72,091	34,387	32,567
Transfers of LHFS, net to other real estate owned, at fair value	15,272	250
Unsettled trades payable	$ 14,000
Issuance of warrants		21,766	41,785
Fair value of assets acquired, net of cash acquired		3,464
Fair value of liabilities assumed		$ 2,165
Consolidated Variable Interest Entity [Member]
Adjustments to reconcile net income to net cash used for operations:
Depreciation and amortization and accretion, net			(315)
Amortization of debt issuance costs			1,247
Net change in interest receivable			1,079
Net change in other assets			946
Net change in accrued interest payable			(606)
Net change in accounts payable			587
Cash flows from investing activities:
Net change in restricted cash			1,950
Net change in loans and leases			171,427
VIE cash dividends			(671)
Cash flows from financing activities:
Advances on credit facilities			17,156
Repayment of borrowings on credit facilities			(137,500)
Payment of deferred financing costs			(250)
Repayment of borrowings on subordinated debt			(30,000)
Supplemental cash flows information:
Interest paid			$ 4,763

Organization

Organization	12 Months Ended
	Dec. 31, 2016
Accounting Policies [Abstract]
Organization	Note 1. Organization NewStar Financial, Inc. is an internally-managed, commercial finance company with $6.7 billion of assets managed across two complementary business lines- middle market direct lending and asset management. The Company’s direct lending activities are focused on meeting the complex financing needs of companies and private investors in the middle market through by offering a range of flexible debt financing options. Through its asset management platforms, NewStar offers a range of investment products employing credit-oriented strategies focused on middle market loans and liquid, tradeable credit. The Company manages approximately $1.3 billion of assets in a series of private credit funds that co-invest in middle market loans originated through its established leveraged finance lending platform and its strategic relationship with GSO Capital, the credit division of The Blackstone Group. Through its wholly-owned subsidiary, NewStar Capital, the Company also has more than $2 billion of assets managed across a series of CLOs that invest primarily in broadly syndicated, non-investment grade loans, as well as other sponsored funds and managed accounts that invest across various asset classes, including non-investment grade loans and bonds. 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 organized around key industry and market segments. These teams are supported by centralized credit management and operating platforms. This structure enables us to leverage common standards, systems, and industry and professional expertise across multiple businesses. The Company targets its marketing and origination efforts at private equity firms, mid-sized companies, corporate executives, banks 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 it targets companies with business operations across a broad range of industry sectors. The Company employs highly experienced bankers 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. The Company's national network is designed around specialized origination channels intended to generate a large set of potential lending opportunities. That allows the Company 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 $15 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 exceeds $35 million. Beginning in January 2016, the Company’s operations were divided into two reportable segments that represent its core businesses, Commercial Lending and Asset Management. The Commercial Lending segment represents our direct lending activities which are focused on providing a range of flexible senior secured debt options to mid-sized companies with annual cash flow (EBITDA) typically between $15 million and $50 million owned by private equity investment funds and managed by established professional alternative asset managers. The Asset Management segment represents our investment advisory activities which are focused on providing opportunities for qualified investors to invest in a range of credit funds managed by the Company. The Asset Management segment manages a series of private credit funds that co-invest in middle market loans originated through its established direct lending platform. Additionally, through its wholly-owned subsidiary, NewStar Capital, the Company also manages assets across a series of CLOs that invest primarily in broadly syndicated loans, as well as other sponsored funds and managed accounts that invest across various liquid, non-investment grade asset classes, including broadly syndicated loans and bonds.

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2016
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Note 2. Summary of Significant Accounting Policies Consolidation The accompanying consolidated financial statements include the accounts of the Company and its subsidiaries (collectively, “NewStar”) have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”). All material intercompany transactions have been eliminated in consolidation. Use of Estimates The preparation of the consolidated 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. Estimates most susceptible to change in the near-term are the Company’s estimates of the allowance for credit losses, impairment of loans, recorded amounts of deferred income taxes, contingent liability and impairment of goodwill and identifiable intangible assets. Prior Period Reclassifications Certain prior period disclosure amounts have been reclassified to conform to current period presentation. Cash and Cash Equivalents Cash and cash equivalents include all demand deposits held in banks and certain highly liquid instruments with original maturities of 90 days or less. Investments in Debt Securities Management determines the classification of securities at the time of purchase. If management has the intent and the Company has the ability at the time of purchase to hold securities until maturity, they are classified as held-to-maturity. Investment securities held-to-maturity are stated at amortized cost. Securities to be held for indefinite periods of time, but not necessarily to be held-to-maturity or on a long-term basis, are classified as available-for-sale and carried at fair value with unrealized gains or losses reported in other comprehensive income (loss), net of applicable income taxes. The fair value of debt securities are based on quoted market prices, when available, at the reporting date. When no market is available, the Company estimates fair value using various valuation tools, including cash flow analyses that utilize financial statements, business plans, as well as qualitative factors. The carrying values of all securities are adjusted for amortization of premiums and accretion of discounts over the shorter of the period to call or maturity of the related security using a method that approximates the interest method. Realized gains or losses on the sale of securities, if any, are determined using the amortized cost of the specific securities sold. Management evaluates securities for other-than-temporary impairment (“OTTI") on a periodic basis. Factors considered in determining whether an impairment is OTTI include: (1) the length of time and the extent to which the fair value has been less than amortized cost, (2) projected future cash flows, (3) the financial condition and near-term prospects of the issuers and (4) the intent and ability of the Company to hold the investment for a period of time sufficient to allow for recovery in fair value which may be until maturity. The Company records an OTTI loss in an amount equal to the entire difference between the fair value and amortized cost if (1) the Company intends to sell an impaired investment security, (2) it is more likely than not that the Company will be required to sell the investment security before its amortized costs are recovered or (3) for debt securities, the present value of expected future cash flows is not sufficient to recover the entire amortized cost basis. If an investment security is determined to be OTTI but the Company does not intend to sell the investment security, only the credit portion of the estimated loss is recognized in earnings, with the non-credit portion of the loss recognized in other comprehensive income. Loans Held-for-Sale Loans classified as held-for-sale consist of loans originated by the Company, intended to be sold or syndicated to third parties (including credit funds managed by the Company) or impaired loans for which a sale of the loan is expected as a result of a workout strategy. These loans are carried at the lower of aggregate cost, net of any deferred origination costs or fees, or fair value. Loans Loans are stated at the principal amount outstanding or fair value when fair value option accounting has been elected. The Company has elected to apply fair value option accounting to loans designated to the credit funds managed by NewStar Capital. Interest income is recorded on the accrual basis in accordance with the terms of the respective loan. Loans on which the accrual of interest has been discontinued are designated as nonaccrual loans. The accrual of interest on loans is typically discontinued when principal or interest payments are past due 90 days or when, in the opinion of management, it is probable it will be unable to collect contractual principal and interest in the normal course of business. When loans are placed on nonaccrual status, all interest previously accrued but not collected is reversed against current period interest income. Income on nonaccrual loans is subsequently recognized only to the extent that cash is received and the loan’s principal balance is deemed collectible. Nonrefundable loan fees and related direct costs associated with the origination of loans are deferred and included in loans, net in the consolidated balance sheet. The net deferred fees or costs are recognized as an adjustment to interest income over the contractual life of the loans using a method which approximates the interest method or taken into income when the related loans are paid off or sold. The Company accretes any discount from purchased loans into loan fee income as a yield adjustment over the contractual life of the loan. The amortization of loan fees is discontinued on non-accrual loans. Provision and Allowance for Credit Losses Our general allowance for credit losses covers probable losses incurred in our loan and lease amortized cost portfolio with respect to loans and leases that are not impaired and for which no specific impairment has been identified. A specific provision for credit losses is recorded with respect to loans for which it is probable that we will be unable to collect all amounts due in accordance with the contractual terms of the loan agreement. 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 within our amortized cost portfolio. 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. The Company periodically reviews its allowance for credit loss methodology to assess any necessary adjustments based upon changing economic and capital market conditions. 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. In 2015, the Company enhanced its approach for determining the expected exposure at default to more precisely reflect loan and lease exposures at December 31, 2015. 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 seven risk factors. In 2015, the scoring system of the environmental reserve risk factors was recalibrated to align with the enhancement made to the approach for determining the exposure at default. 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 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. 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. Impaired loans include all non-accrual loans, loans with partial charge-offs and loans which are Troubled Debt Restructurings (see Note 4). It is the Company’s policy during the reporting period to record a specific provision for credit losses to cover the identified impairment on a loan. Impaired loans at December 31, 2016 were in Leveraged Finance over a range of industries impacted by the current economic environment including the following: Media and Communications, Healthcare, Energy, Industrial, Other Business Services, Consumer/Retail and Building Materials. For impaired Leveraged Finance loans, the Company measured impairment based on expected cash flows utilizing relevant information provided by the borrower and consideration of other market conditions or specific factors impacting recoverability. Such amounts are discounted based on original loan terms. Loans deemed to be uncollectible are charged off and the allowance is reduced by the charged off balance of the loan. The provision for credit losses and recoveries on loans previously charged off are added to the allowance. Deferred Financing Costs Deferred financing costs represent fees and other direct incremental costs incurred in connection with borrowings and term debt securitizations. These amounts are amortized using the straight-line method into earnings as interest expense ratably over the contractual term of the facility or the estimated life of the term debt securitization. Debt and equity linked instruments We account for the subordinated notes and associated warrants issued to Franklin Square as debt and equity-linked instruments. The warrants are freestanding, indexed to the Company's common stock and are classified as equity. They were initially recorded at relative fair value, with no subsequent re-measurement. The allocation of the proceeds from the issuance of debt and warrants to Franklin Square was determined using the relative fair value method. The allocation of proceeds to the warrants created a debt discount to the subordinated debt and will be amortized over the life of the subordinated notes. The subordinated debt is presented net of the debt discount. Property and Equipment Property and equipment are carried at cost and depreciated or amortized on a straight-line basis over the following useful lives: Leasehold improvements Shorter of estimated life or remaining lease term Furniture, fixtures and equipment 3-5 years Goodwill and Identified Intangible Assets Goodwill represents the excess of the consideration paid of an acquisition over the fair value of the net assets acquired. Goodwill is not subject to amortization but tested for impairment at least annually utilizing a qualitative or quantitative approach or more frequently if events or circumstances occur that indicate that impairment may have occurred. Factors that could trigger an impairment review include significant underperformance relative to historical or projected operating results, significant changes in the use of acquired assets or significant negative industry or economic trends. The Company performs its assessment for impairment of goodwill annually. As part of this evaluation, the Company makes a qualitative assessment of whether it is more likely than not that the fair value of an acquired asset is greater than its carrying amount. If the Company qualitatively concludes that it is more likely than not that the fair value of an acquired asset is greater than its carrying amount, no further testing is necessary. If, however, the Company qualitatively concludes that it is more likely than not that the fair value of an acquired asset is less than its carrying value, the Company performs a two-step quantitative impairment test to determine whether the asset is impaired. If impairment is deemed to have occurred, then an impairment loss would be recognized for the amount by which the carrying amount exceeds its fair value. Identified intangible assets are assets resulting from acquisitions that are being amortized over their estimated useful lives. The recoverability of identified intangible assets is evaluated for impairment at least annually. If impairment is deemed to have occurred, then an impairment loss would be recognized for the amount by which the carrying amount exceeds fair value. Earnings Per Share (“EPS”) The Company utilizes the two-class method to calculate earnings per share, which requires that unvested share-based awards be treated as participating securities in the computation of EPS. Under the two-class method, earnings are allocated to common shareholders and participating securities based upon the proportion of each to the total weighted average shares available. Basic earnings per common share is computed by dividing net earnings allocated to common shareholders by the weighted-average number of common shares outstanding. Diluted earnings reflect the potential dilution that would occur if securities or other contracts to issue common stock were exercised or converted into common stock or resulted in the issuance of common stock that then shared in our earnings. Fair Value Measurements Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. A fair value measurement assumes that the transaction to sell the asset or transfer the liability occurs in the principal market for the asset or liability or, in the absence of a principal market, the most advantageous market for the asset or liability. The price in the principal (or most advantageous) market used to measure the fair value of the asset or liability is not adjusted for transaction costs. An orderly transaction is a transaction that assumes exposure to the market for a period prior to the measurement date to allow for marketing activities that are usual and customary for transactions involving such assets and liabilities. Market participants are buyers and sellers in the principal market that are independent, knowledgeable, able to transact and willing to transact. ASC 820, Fair Value Measurement Income Taxes Income taxes are accounted for under the asset and liability method. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases, and operating loss and tax credit carryforwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. The Company classifies all interest and penalties on recognized tax benefits as a part of income tax expense. Fee Income Recognition Origination fees and costs are deferred and amortized as yield adjustments over the contractual life of the loans and investments. In connection with the prepayment of a loan or other debt product, any remaining unamortized net deferred fees for that loan are accelerated and, depending on the terms of the loan, there may be an additional fee charged based upon the prepayment and recognized in the period of the prepayment. Syndication and structuring fees are recognized in the period the service is completed and funds received as fee income. Asset Management Income NewStar Financial, Inc. earns asset management income for investment management services performed for managed credit funds that co-invest in middle market loans originated through its established direct lending platform and managed assets across a series of CLOs that investment primarily in broadly syndicated loans, as well as other sponsored funds and managed accounts. NewStar accrues this income when earned, on a monthly basis, and classifies it as asset management income in the consolidated statements of operations. Stock Based Compensation The Company follows ASC 718, Share-Based Payment For awards granted, modified, repurchased or cancelled after January 1, 2006, the Company estimates the fair value of stock-based awards using the Black-Scholes valuation model, which requires the input of subjective assumptions, including expected term and expected price volatility. Changes in these assumptions can materially affect the calculated fair value of stock-based compensation and the related expense to be recognized. Further, for awards that contain performance measures and conditions, the Company makes an assessment, based on management’s judgment, of the probability of these conditions being satisfied, which affects the timing and the amount of expense to be recognized. If the Company’s judgment as to whether these conditions are probable of occurrence are not appropriate, the financial statements could be materially affected. Gain (loss) on sale of loans All loans sold to date have been sold without recourse. When loans are sold, a gain or loss is recognized to the extent that the sales proceeds net of deferred fees and costs exceed or are less than the carrying value of the loans. Gains and losses are determined using the specific identification method. Equity and Cost Method Investments The Company may acquire a portion of the equity in borrowers. In cases where the Company has the ability to exercise significant influence over the borrower, it accounts for its equity interest under the equity method of accounting. Under the equity method of accounting, the Company recognizes its proportional share of the borrower’s GAAP net income in its results of operations. In cases where the equity of the underlying company has no value, and the borrower incurs losses, the Company will apply its proportional share of the GAAP loss against the principal of the outstanding loan to the borrower. In circumstances where we do not have substantial influence over the company, we account for the equity interest under the cost method of accounting. The equity interest is recorded at its historical cost within other assets on our consolidated balance sheet. The Company evaluates its equity and cost method investments for impairment by assessing whether the fair value of the equity interest has declined below its carrying value for a period we consider other-than-temporary. If it determines that a decline in fair value below our carrying value is other-than-temporary, an impairment is recognized to reduce the carrying value of the investment to its fair value. Derivative Instruments and Hedging Activities The Company accounts for derivatives and hedging activities on the consolidated balance sheet in either other assets or other liabilities at their respective fair values. On the date a derivative contract is entered into, the Company designates the derivative as either (1) a hedge of a forecasted transaction or the variability of cash flows to be received or paid related to a recognized asset or liability (cash flow hedge) or as (2) a derivative trading instrument. For all hedging relationships the Company formally documents the hedging relationship and its risk-management objective and strategy for undertaking the hedge, the hedging instrument, the item, the nature of the risk being hedged, how the hedging instrument’s effectiveness in offsetting the hedged risk will be assessed, and a description of the method of measuring ineffectiveness. This process includes linking all derivatives that are designated as hedges to specific assets and liabilities on the balance sheet or to forecasted transactions. The Company also formally assesses, both at the hedge’s inception and on an ongoing basis, whether the derivatives that are used in hedging transactions are highly effective in offsetting changes in cash flows of hedged items. Changes in the fair value of a derivative that is highly effective and that is designated and qualifies as a cash-flow hedge are recorded in other comprehensive income to the extent that the derivative is effective as a hedge, until earnings are affected by the variability in cash flows of the designated hedged item. The ineffective portion of the change in fair value of a derivative instrument that qualifies as a cash-flow hedge is reported in earnings. The Company discontinues hedge accounting prospectively when it is determined that the derivative is no longer effective in offsetting changes in the cash flows of the hedged item, the derivative expires or is sold, terminated, or exercised, the derivative is de-designated as a hedging instrument because it is unlikely that a forecasted transaction will occur, or management determines that designation of the derivative as a hedging instrument is no longer appropriate. In all situations in which hedge accounting is discontinued or was never applied, the Company continues to carry the derivative at its fair value on the balance sheet and recognizes any subsequent changes in its fair value in earnings. When hedge accounting is discontinued because it is probable that a forecasted transaction will not occur by the date (or within the time period) originally specified or within an additional two-month period of time thereafter, the Company recognizes immediately in earnings, gains and losses that were accumulated in other comprehensive income. Gains and losses on derivatives not designated as hedges, including any cash payments made or received, are reported as gain (loss) on derivatives in the accompanying consolidated statements of operations. Total Return Swap The Company was party to a total return swap (“TRS”) through March 31, 2016. A TRS is a contract in which one party agrees to make periodic payments to another party based on the change in the market value of the assets underlying the TRS, in return for periodic payments based on a fixed or variable interest rate. The TRS effectively added leverage to our portfolio by providing investment exposure to underlying loans without owning or taking physical custody, in return for an interest-type payment to Citi. The TRS was recorded at fair value as an asset or liability with changes in fair value recorded as unrealized appreciation or depreciation. Realized gains or losses are recognized at the maturity of the contract. Comprehensive Income (Loss), net of tax The Company records the change in fair value of cash flow hedge derivatives and unrealized gains and losses on available-for-sale securities in other comprehensive income (loss), net of tax. Gains and losses on available-for-sale securities are reclassified to net income as the gains and losses are realized upon sale of the securities. Other than temporary impairment charges are reclassified to earnings at the time of the charge. Recently Adopted 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 thousands) December 31, 2015 As previously reported under GAAP applicable at the time Deferred financing costs, net 40,733 Credit facilities 843,896 Term debt securitizations, net 1,837,889 Senior notes, net 379,232 Subordinated notes, net 215,018 Repurchase agreements 96,789 As currently reported under ASU 2015-03 Deferred financing costs, net — Credit facilities, net 832,686 Term debt securitizations, net 1,821,519 Senior notes, net 372,153 Subordinated notes, net 209,509 Repurchase agreements, net 96,224 In August 2014, the FASB issued ASU 2014-15, Presentation of Financial Statements- Going Concern (Subtopic 205-40) Recently Issued Accounting Standards not yet required to be adopted as of December 31, 2016 In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606). Revenue from Contracts with Customers (Topic 606): Deferral of the Effective Date Revenue from Contracts with Customers (Topic 606): Principal versus Agent Considerations (Reporting Revenue Gross versus Net), 2016-08 ASU 2014-09 . In November 2015, the FASB issued ASU 2015-17, Income Taxes (Topic 740). ASU 2015-17 is effective for annual periods and interim periods within that reporting period beginning after December 15, 2016. In January 2016, the FASB issued ASU 2016-01, Financial Instruments – Recognition and Measurement of Financial Assets and Financial Liabilities (Topic 825-10) In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) . ASU 2016-02 amends existing guidance related to the accounting for leases. These amendments, among other things, require lessees to account for most leases on the balance sheet while recognizing expense on the income statement in a manner similar to existing guidance. For lessors the guidance modifies the classification criteria and the accounting for sales-type and direct finance leases. ASU 2016-02 is effective for annual periods and interim periods within that reporting period beginning after December 15, 2018, with early adoption permitted. ASU 2016-02 mandates a modified retrospective transition method for all entities. The Company has performed a preliminary analysis of ASU 2016-02. The Company typically categorizes its leases as either office space leases or as other leases. The adoption of ASU 2016-02 is expected to have an impact on the balance sheet of the Company, as both the value of the leased office space as well as the current value of future lease liabilities will be recorded. The Company does not expect there to be a material impact to financial position for all other leases due to the limited volume and size of transactions; however the evaluation has yet to be performed. The Company plans to adopt this standard effective January 1, 2019. In March 2016, the FASB issued ASU 2016-07, Simplifying the Transition to the Equity Method of Accounting (Topic 323) In March 2016, the FASB issued ASU 2016-09, Improvements to Employee Share-Based Payment Accounting (Topic 718). In June 2016, the FASB issued ASU 2016-13, Financial Instruments-Credit Losses (Topic 326) ASU 2016-13 requires enhanced disclosures, including qualitative and quantitative requirements, to help understand significant estimates and judgments used in estimating credit losses, as well as provide additional information about the amounts recorded in the financial statements. In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows (Topic 230). In October 2016, the FASB issued ASU 2016-17, Consolidation (Topic 810), Interest Held Through Related Parties That Are Under Common Control In November 2016, the FASB issued ASU 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash. is effective for annual periods and interim periods within that reporting period beginning after D In January 2017, the FASB issued ASU 2017-04 Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment. 2017-04 is effective for annual periods and interim periods within that reporting period beginning after December 15, 2019, with early adoption permitted.

Acquisitions and Disposition Ac

Acquisitions and Disposition Activities	12 Months Ended
	Dec. 31, 2016
Business Combinations [Abstract]
Acquisitions and Disposition Activities	Note 3. Acquisitions and Disposition Activities Sale of NewStar Equipment Finance assets and related platform On December 1, 2016, the Company sold the assets of NewStar Equipment Finance (“Equipment Finance”) and related platform to a third party and exited the business. The sale of Equipment Finance assets was the result of the Company’s decision to exit businesses with economic models increasingly challenged by competition from banks and other lenders with access to lower cost funding. The sale resulted in a gain of $6.7 million, before transaction related costs of $4.3 million. The net gain is recorded in non-interest income on the accompanying consolidated statement of operations. In connection with the sale of the assets of Equipment Finance, the Company established a contingent liability to cover any potential credit indemnification costs resulting from actual credit losses incurred on the assets sold. As of December 31, 2016 a $1.4 million liability was recorded to cover any potential credit losses. This liability reflects management’s best estimate of losses, taking into consideration the individual credit quality and borrower activity since origination and the anticipated residual value of the assets sold. The initial indemnification is capped at $10.0 million of actual credit losses and is reduced to $8.0 million at December 31, 2017, further reduced to $5.0 million at December 31, 2018, $3.0 million at December 31, 2019 and zero as of December 31, 2020. Sale of NewStar Business Credit LLC On March 31, 2016, the Company sold its asset based lending business, NewStar Business Credit LLC (“Business Credit”) to a third party. The Company opted to sell Business Credit because it was faced with challenges from increasing competition with access to lower cost of funding. The sale resulted in a gain of $22.5 million, before transaction related costs of $2.5 million. The net gain is recorded in non-interest income on the accompanying consolidated statement of operations. Acquisition On October 7, 2015 (the “Acquisition Date”), the Company acquired 100% of the outstanding limited liability company interests of Boston-based Feingold O’Keeffe Capital, LLC (“FOC Partners”), a boutique credit manager. The Company operates FOC Partners as NewStar Capital, a wholly owned subsidiary of the Company. The primary reason for the acquisition was to expand the Company’s existing asset management capabilities. Total consideration paid in the FOC Partners acquisition consisted of $20.8 million in cash. The assets acquired and the liabilities assumed in the acquisition were recorded by the company at their estimated fair values as of the Acquisition Date. The excess of consideration paid over the fair value of identifiable net assets was recorded as goodwill in the consolidated financial statements. As of the Acquisition Date, the Company recorded $17.9 million of goodwill and $1.4 million of identified intangible assets in connection with the acquisition of FOC Partners.

Loans Held-for-Sale, Loans and

Loans Held-for-Sale, Loans and Leases, and Allowance for Credit Losses	12 Months Ended
	Dec. 31, 2016
Receivables [Abstract]
Loans Held-for-Sale, Loans and Leases, and Allowance for Credit Losses	Note 4. Loans Held-for-Sale, Loans and Leases, and Allowance for Credit Losses As of December 31, 2016 and 2015, loans held-for-sale consisted of the following: December 31, 2016 December 31, 2015 ($ in thousands) Leveraged Finance $ 145,966 $ 485,874 Gross loans held-for-sale 145,966 485,874 Deferred loan fees, net (1,906 ) (7,089 ) Total loans, net $ 144,060 $ 478,785 These loans are carried at the lower of aggregate cost, net of any deferred origination costs or fees, or fair value. At December 31, 2016, loans held-for-sale consisted of loans with an aggregate outstanding balance of $146.0 million that were intended to be sold to credit funds managed by the Company. The Company sold loans with an outstanding balance totaling $638.3 million for an aggregate loss of $0.9 million to credit funds managed by the Company during 2016. The Company sold loans with an outstanding balance totaling $188.2 million for an aggregate loss of $1.5 million to entities other than credit funds during 2016. The Company sold loans with an aggregate outstanding balance of $105.3 million for a gain of $0.5 million to entities other than credit funds during 2015. The Company sold loans with an aggregate outstanding balance of $59.0 million for a gain of $0.2 million to entities other than credit funds during 2014. As of December 31, 2016 and 2015, loans and leases consisted of the following: December 31, 2016 2015 ($ in thousands) Leveraged Finance (1) $ 3,308,926 $ 2,627,314 Business Credit — 342,281 Real Estate 10,624 100,732 Equipment Finance — 173,253 Gross loans and leases 3,319,550 3,243,580 Deferred loan fees, net (29,423 ) (51,249 ) Allowance for loan and lease losses (50,936 ) (58,259 ) Total loans and leases, net $ 3,239,191 $ 3,134,072 (1) Includes loans at fair value of $403.7 and $0, respectively. The Company provides commercial loans and commercial real estate loans to customers throughout the United States. The Company’s borrowers may be susceptible to economic slowdowns or recessions and, as a result, may have a lower capacity to make scheduled payments of interest or principal on their borrowings during these periods. Adverse economic conditions also may decrease the estimated value of the collateral, particularly real estate, securing some of the Company’s loans. Although the Company has a diversified loan portfolio, certain events may occur, including, but not limited to, adverse economic conditions and adverse events affecting specific clients, industries or markets, that could adversely affect the ability of borrowers to make timely scheduled principal and interest payments on their loans. 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 lending groups. The quantitative models employed by the Company in its Leveraged Finance business 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. The Real Estate lending group 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 produces 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. P rior to the sale of the Equipment Finance assets, management used similar models for its Equipment Finance portfolio as its Leveraged Finance group. Prior to the sale of Loans and leases which are rated at or below a specified threshold are typically classified as “Pass”, and loans and leases rated above that threshold are typically classified as “Criticized”, a characterization that may apply to impaired loans, including TDR. As of December 31, 2016, $118.7 million of the Company’s loans were classified as “Criticized”, all of which were impaired loans, and $3.2 billion were classified as “Pass”. As of December 31, 2015, $152.1 million of the Company’s loans were classified as “Criticized”, including $143.6 million of the Company’s impaired loans, and $3.1 billion were classified as “Pass”. When the Company determines a loan is impaired, the Company will evaluate the loan individually and if necessary establish a specific allowance. The loan will be analyzed and may be placed on non-accrual status. 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. 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 for all loans for which we have serious doubts as to the ability of the borrowers to comply with the present loan repayment terms. As of December 31, 2016, the Company had impaired loans with an aggregate outstanding balance of $133.4 million. Impaired loans with an aggregate outstanding balance of $114.8 million have been restructured and classified as TDR. As of December 31, 2016, the aggregate carrying value of equity investments in certain of the Company’s borrowers in connection with TDRs totaled $9.9 million. Impaired loans with an aggregate outstanding balance of $99.2 million were also on non-accrual status. These non-accrual loans had a carrying value of $92.9 million before specific reserves. 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 2016, the Company charged off $25.7 million of outstanding non-accrual loans. During 2016, the Company placed loans with an aggregate outstanding balance of $27.1 million on non-accrual status and no loans were returned to performing status. During 2016, the Company recorded $24.8 million of net specific provisions for impaired loans. At December 31, 2016, the Company had a $19.8 million specific allowance for impaired loans with an aggregate outstanding balance of $73.5 million. At December 31, 2016, additional funding commitments for impaired loans totaled $11.9 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 December 31, 2016, loans to two borrowers totaling approximately $21.1 million were on non-accrual status and were greater than 60 days past due and classified as delinquent by the Company. Included in the $19.8 million specific allowance for impaired loans was $7.9 million related to delinquent loans. During 2016, the Company foreclosed on a held-for-sale impaired real estate loan. Simultaneous with the foreclosure, the Company sold a portion of the property for $8.5 million and applied the proceeds to the principal loan balance. The remaining $15.8 million was transferred to Other Real Estate Owned (“OREO”). During 2015, the Company sold one commercial real estate OREO property for $3.0 million resulting in a loss on sale of $0.01 million. During 2014, the Company sold one commercial real estate OREO property for $9.5 million resulting in a gain on sale of $0.01 million. As of December 31, 2015, the Company had impaired loans with an aggregate outstanding balance of $193.2 million. Impaired loans with an aggregate outstanding balance of $183.6 million had been restructured and classified as TDR. As of December 31, 2015, the aggregate carrying value of equity investments in certain of the Company’s borrowers in connection with TDRs totaled $11.4 million. Impaired loans with an aggregate outstanding balance of $111.3 million were also on non-accrual status. These non-accrual loans had a carrying value of $104.7 million before specific reserves. During 2015, the Company charged off $4.0 million of outstanding non-accrual loans. During 2015, the Company placed loans with an aggregate outstanding balance of $38.2 million on non-accrual status and returned loans with an aggregate outstanding balance of $0.9 million to performing status. During 2015, the Company recorded $9.5 million of net specific provisions for impaired loans. At December 31, 2015, the Company had a $26.8 million specific allowance for impaired loans with an aggregate outstanding balance of $121.1 million. At December 31, 2015, additional funding commitments for impaired loans totaled $10.9 million. As of December 31, 2015, $18.6 million of loans on non-accrual status were greater than 60 days past due and classified as delinquent by the Company. Included in the $26.8 million specific allowance for impaired loans was $2.8 million related to delinquent loans. A summary of impaired loans is as follows: Investment, Net of Charge-offs Investment, Net of Unamortized Discount/Premium Unpaid Principal ($ in thousands) December 31, 2016 Leveraged Finance $ 133,413 $ 126,839 $ 154,879 Real Estate — — — Total $ 133,413 $ 126,839 $ 154,879 December 31, 2015 Leveraged Finance $ 157,446 $ 150,692 $ 188,453 Business Credit — — — Real Estate 34,941 34,915 38,286 Equipment Finance 772 709 772 Total $ 193,159 $ 186,316 $ 227,511 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) December 31, 2016 Leveraged Finance $ 73,499 $ 68,924 $ 59,914 $ 57,915 Total $ 73,499 $ 68,924 $ 59,914 $ 57,915 December 31, 2015 Leveraged Finance $ 113,397 $ 106,762 $ 44,049 $ 43,930 Real Estate 7,705 7,705 27,236 27,210 Equipment Finance — — 772 709 Total $ 121,102 $ 114,467 $ 72,057 $ 71,849 During 2016, 2015 and 2014 the Company recorded net charge-offs of $33.0 million, $3.4 million and $25.3 million, respectively. During 2016, 2015 and 2014 the Company recorded recoveries of previously charged-off loans of $0.4 million, $0.8 million and $0.1 million, respectively. When a loan is determined to be uncollectible, the specific allowance is charged off, which reduces the gross investment in the loan. The Company may record the initial specific allowance related to an impaired loan in the same period as it records a partial charge-off in certain circumstances such as if the terms of a restructured loan are finalized during that period. While charge-offs typically have no net impact on the carrying value of net loans and leases, charge-offs lower the level of the allowance for loan and lease losses; and, as a result, reduce the percentage of allowance for loans and leases to total loans and leases, and the percentage of allowance for loan and leases losses to non-performing loans. Below is a summary of the Company’s evaluation of its amortized cost portfolio and allowance for loan and lease losses by impairment methodology: Leveraged Finance Real Estate December 31, 2016 Investment Allowance Investment Allowance ($ in thousands) Collectively evaluated (1)(2) $ 2,771,768 $ 31,073 $ 10,624 $ 92 Individually evaluated (3) 133,413 19,771 — — Total $ 2,905,181 $ 50,844 $ 10,624 $ 92 Leveraged Finance Business Credit Real Estate Equipment Finance December 31, 2015 Investment Allowance Investment Allowance Investment Allowance Investment Allowance ($ in thousands) Collectively evaluated (1) $ 2,469,868 $ 27,874 $ 342,281 $ 1,991 $ 65,791 $ 350 $ 172,481 $ 1,291 Individually evaluated (3) 157,446 26,447 — — 34,941 306 772 — Total $ 2,627,314 $ 54,321 $ 342,281 $ 1,991 $ 100,732 $ 656 $ 173,253 $ 1,291 (1) Represents loans and leases collectively evaluated for impairment in accordance with ASC 450-20, Loss Contingencies, and pursuant to amendments by ASU 2010-20 regarding allowance for unimpaired loans and leases. (2) Excludes $403.7 million Leveraged Finance loans which the Company elected to record at fair value. (3) Represents loans individually evaluated for impairment in accordance with ASU 310-10, Receivables, Below is a summary of the Company’s net investment in nonaccrual loans: Recorded Investment in Nonaccrual Loans December 31, 2016 December 31, 2015 ($ in thousands) Leveraged Finance $ 99,233 $ 103,563 Real Estate — 7,705 Total $ 99,233 $ 111,268 Less: Deferred fees (6,485 ) (6,616 ) Add back: Interest Receivable 116 34 Total $ 92,864 $ 104,686 Loans being restructured typically develop 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 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 December 31, 2016 and 2015 is provided below: ($ in thousands) Group I Group II December 31, 2016 $ 114,803 $ 77,061 December 31, 2015 $ 183,573 $ 162,986 Note: A loan may be included in both restructuring groups, but not repeated within each group. For 2016 and 2015, the Company had net charge-offs totaling $26.7 million and $4.0 million, respectively, related to loans previously classified as a TDR. As of December 31, 2016, the Company had not removed the TDR classification from any loan previously identified as such, but had charged-off, sold and received repayments of outstanding TDRs. The Company measures TDRs similarly to how it measures all loans for impairment. The Company performs a discounted cash flow analysis on cash flow dependent loans and assesses the underlying collateral value less reasonable costs of sale for collateral dependent loans. Management analyzes the projected performance of the borrower to determine if it has the ability to service principal and interest payments based on the terms of the restructuring. Loans will typically not be returned to accrual status until at least six months of contractual payments have been made in a timely manner or the borrower shows significant ability to maintain servicing of the restructured debt. Additionally, at the time of a restructuring and quarterly thereafter, an impairment analysis is undertaken to determine the measurement of specific reserve, if any, on each impaired loan. Below is a summary of the Company’s loans which were classified as TDR: For the Year Ended December 31, 2016 Pre- Modification Outstanding Recorded Investment Post- Modification Outstanding Recorded Investment Investment in TDR Subsequently Defaulted ($ in thousands) Leveraged Finance $ 49,536 $ 27,216 $ 18,916 Real Estate (1) — — 4,483 Total $ 49,536 $ 27,216 $ 23,399 (1) Amount reflects charge-off on an impaired Real Estate TDR that was taken prior to transfer to held-for-sale. For the Year Ended December 31, 2015 Pre- Modification Outstanding Recorded Investment Post- Modification Outstanding Recorded Investment Investment in TDR Subsequently Defaulted ($ in thousands) Leveraged Finance $ 13,650 $ 13,650 $ 29,339 Business Credit — — — Real Estate 27,704 27,704 — Equipment Finance 922 922 — Total $ 42,276 $ 42,276 $ 29,339 The following sets forth a breakdown of TDRs at December 31, 2016 and 2015: As of December 31, 2016 ($ in thousands) Accrual Status Impaired Specific For the year Loan Type Accruing Nonaccrual Balance Allowance Charged-off Leveraged Finance $ 24,367 $ 90,436 $ 114,803 $ 15,939 $ 26,684 Total $ 24,367 $ 90,436 $ 114,803 $ 15,939 $ 26,684 As of December 31, 2015 ($ in thousands) Accrual Status Impaired Specific For the year Loan Type Accruing Nonaccrual Balance Allowance Charged-off Leveraged Finance $ 53,883 $ 93,977 $ 147,860 $ 24,958 $ 4,000 Real Estate 27,236 7,705 34,941 — — Equipment Finance 772 — 772 — — Total $ 81,891 $ 101,682 $ 183,573 $ 24,958 $ 4,000 The Company classifies a loan as Past Due when it is over 60 days delinquent. An aged analysis of the Company’s past due receivables is as follows: 60-89 Days Past Due Greater than 90 Days Total Past Due Current Total Loans and Leases Investment in > 60 Days & Accruing December 31, 2016 ($ in thousands) Leveraged Finance $ — $ 21,135 $ 21,135 $ 3,287,791 $ 3,308,926 $ — Real Estate — — $ — 10,624 10,624 — Total $ — $ 21,135 $ 21,135 $ 3,298,415 $ 3,319,550 $ — December 31, 2015 Leveraged Finance $ — $ 27,165 $ 27,165 $ 2,600,149 $ 2,627,314 $ 8,530 Business Credit — — — 342,281 342,281 — Real Estate — — — 100,732 100,732 — Equipment Finance — — — 173,253 173,253 — Total $ — $ 27,165 $ 27,165 $ 3,216,415 $ 3,243,580 $ 8,530 A general allowance is provided for loans and leases within the amortized portfolio 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 held at amortized cost. 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. The Company continually evaluates the appropriateness of its allowance for credit losses methodology. Based on the Company’s evaluation process to determine the level of the allowance for loan and lease losses, management believes the allowance to be adequate as of December 31, 2016 in light of the estimated known and inherent risks identified through its analysis. The Company closely monitors the credit quality of its loans and leases which is partly reflected in its credit metrics such as loan delinquencies, non-accruals and charge-offs. Changes in these credit metrics are largely due to changes in economic conditions and seasoning of the loan and lease portfolio. 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 (prior to the latter being sold), 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 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. Prior to the sale of Business Credit, the Company utilized a proprietary model to risk rate the loans on a monthly basis. This model captured 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 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 was adjusted to reflect the historical average for expected loss from the industry database. For consolidated VIEs to which the Company had provided transitional capital, we utilized a qualitative analysis which considered 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 to determine expected loss, as well as conditions in the capital markets. The Company provided capital on a transitional basis to the Arlington Fund, prior to the completion of its term debt securitization on June 26, 2014. During the transitional hold period, the expected and actual loss on the Arlington Fund was zero and no allowance was recorded. The Company deconsolidated the Arlington Fund on June 26, 2014. The Company did not recognize any losses on loans on the date of deconsolidation. 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. A summary of the activity in the allowance for credit losses is as follows: Year Ended December 31, 2016 Leveraged Finance Business Credit Real Estate Equipment Finance Total ($ in thousands) Balance, beginning of period $ 54,788 $ 1,991 $ 656 $ 1,291 $ 58,726 Provision for credit losses—general 3,204 (172 ) 1,010 (1,291 ) 2,751 Provision for credit losses—specific 20,483 — 4,307 — 24,790 Reversal due to sale of Business Credit — (1,819 ) — — (1,819 ) Loans charged off, net of recoveries (27,159 ) — (5,881 ) — (33,040 ) Balance, end of period $ 51,316 $ — $ 92 $ — $ 51,408 Balance, end of period—specific $ 19,771 $ — $ — $ — $ 19,771 Balance, end of period—general $ 31,545 $ — $ 92 $ — $ 31,637 Average balance of impaired loans $ 176,286 $ — $ 24,595 $ — $ 200,881 Average net book value of impaired leases — — — 542 542 Interest recognized from impaired loans and leases $ 9,679 $ — $ 1,220 $ 12 $ 10,911 Loans and leases (1) Loans individually evaluated with specific allowance $ 73,499 $ — $ — $ — $ 73,499 Loans individually evaluated with no specific allowance 59,914 — — — 59,914 Loans and leases collectively evaluated without specific allowance 2,771,768 — 10,624 — 2,782,392 Total loans and leases $ 2,905,181 $ — $ 10,624 $ — $ 2,915,805 (1) Excludes $403.7 million of Leveraged Finance loans which the Company elected to record at fair value. Year Ended December 31, 2015 Leveraged Finance Business Credit Real Estate Equipment Finance Total ($ in thousands) Balance, beginning of period $ 41,480 $ 1,334 $ 257 $ 622 $ 43,693 Provision for credit losses—general 7,473 657 93 669 8,892 Provision for credit losses—specific 9,043 — 306 146 9,495 Loans charged off, net of recoveries (3,208 ) — — (146 ) (3,354 ) Balance, end of period $ 54,788 $ 1,991 $ 656 $ 1,291 $ 58,726 Balance, end of period—specific $ 26,447 $ — $ 306 $ — $ 26,753 Balance, end of period—general $ 28,341 $ 1,991 $ 350 $ 1,291 $ 31,973 Average balance of impaired loans $ 172,578 $ — $ 36,106 $ — $ 208,684 Average net book value of impaired leases — — — 863 863 Interest recognized from impaired loans and leases $ 11,370 $ — $ 1,584 $ 36 $ 12,990 Loans and leases Loans individually evaluated with specific allowance $ 113,397 $ — $ 7,705 $ — $ 121,102 Loans individually evaluated with no specific allowance 44,049 — 27,236 772 72,057 Loans and leases collectively evaluated without specific allowance 2,469,868 342,281 65,791 172,481 3,050,421 Total loans and leases $ 2,627,314 $ 342,281 $ 100,732 $ 173,253 $ 3,243,580 Included in the allowance for credit losses at December 31, 2016 and 2015 is an allowance for unfunded commitments of $0.5 million, 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 2016, the Company recorded a total provision for credit losses of $27.5 million. The Company decreased its allowance for credit losses to $51.4 million as of December 31, 2016 from $58.7 million at December 31, 2015. The Company had $33.0 million of net charge-offs and increased its general allowance for credit losses by 10 basis points during 2016, and recorded new specific provisions for credit losses of $24.8 million. The general allowance for credit losses covers probable losses incurred in the Company’s loan and lease amortized cost 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 TDRs, as a percentage of “Loans and leases, net” was 4% as of December 31, 2016 and 6% as of December 31, 2015.

Restricted Cash

Restricted Cash	12 Months Ended
	Dec. 31, 2016
Cash And Cash Equivalents [Abstract]
Restricted Cash	Note 5. Restricted Cash Restricted cash as of December 31, 2016 and 2015 was as follows: December 31, 2016 2015 ($ in thousands) Collections on loans pledged to credit facilities $ 43,822 $ 67,892 Principal and interest collections on loans held in trust and prefunding amounts 216,501 85,823 Customer escrow accounts 2,320 277 Total $ 262,643 $ 153,992 As of December 31, 2016, the Company had the ability to use $183.6 million of restricted cash to fund new or existing loans.

Investments in Debt Securities,

Investments in Debt Securities, Available-for-Sale	12 Months Ended
	Dec. 31, 2016
Investments Debt And Equity Securities [Abstract]
Investments in Debt Securities, Available-for-Sale	Note 6. Investments in Debt Securities, Available-for-Sale Amortized cost of investments in debt securities as of December 31, 2016 and 2015 was as follows: December 31, 2016 2015 ($ in thousands) Investments in debt securities—gross $ 132,180 $ 111,020 Unamortized discount (6,743 ) (6,765 ) Investments in debt securities—amortized cost $ 125,437 $ 104,255 The amortized cost, gross unrealized holding gains, gross unrealized holding losses, and fair value of available-for-sale securities at December 31, 2016 and 2015 were as follows: Amortized cost Gross unrealized holding gains Gross unrealized holding losses Fair value ($ in thousands) December 31, 2016 Collateralized loan obligations $ 125,437 $ 286 $ (6,416 ) $ 119,307 $ 125,437 $ 286 $ (6,416 ) $ 119,307 Amortized cost Gross unrealized holding gains Gross unrealized holding losses Fair value ($ in thousands) December 31, 2015 Collateralized loan obligations $ 104,255 $ — $ (10,078 ) $ 94,177 $ 104,255 $ — $ (10,078 ) $ 94,177 During 2016, the Company purchased $26.3 million of debt securities and a $6.0 million investment in debt securities was redeemed at par. The Company did not sell any debt securities during 2016, 2015 or 2014. The following is an analysis of the continuous periods during which the Company has held investment positions which were carried at an unrealized loss as of December 31, 2016 and 2015: December 31, 2016 Less than 12 Months Greater than or Equal to 12 Months Total ($ in thousands) Number of positions 3 17 20 Fair value $ 4,811 $ 68,737 $ 73,548 Amortized cost 4,885 75,079 79,964 Unrealized loss $ (74 ) $ (6,342 ) $ (6,416 ) December 31, 2015 Less than 12 Months Greater than or Equal to 12 Months Total ($ in thousands) Number of positions 20 3 23 Fair value $ 86,245 $ 7,932 $ 94,177 Amortized cost 95,624 8,631 104,255 Unrealized loss $ (9,379 ) $ (699 ) $ (10,078 ) As a result of the Company’s evaluation of the securities, management concluded that the unrealized losses at December 31, 2016 and 2015 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 December 31, 2016, 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. The Company did not record any net OTTI during 2016, 2015 or 2014. Maturities of debt securities classified as available-for-sale were as follows at December 31, 2016 and 2015: December 31, 2016 December 31, 2015 Amortized cost Fair value Amortized cost Fair value ($ in thousands) Available-for-sale: Due one year or less $ 91 $ 20 $ — $ — Due after one year through five years — — — — Due after five years through ten years 53,177 48,404 34,017 30,470 Due after ten years through fifteen years 72,169 70,883 70,238 63,707 Total $ 125,437 $ 119,307 $ 104,255 $ 94,177 Actual maturities of debt securities may differ from those presented above since certain obligations amortize and provide the issuer of the individual debt securities the right to call or prepay the obligation prior to the scheduled final stated maturity without penalty.

Fixed Assets

Fixed Assets	12 Months Ended
	Dec. 31, 2016
Property Plant And Equipment [Abstract]
Fixed Assets	Note 7. Fixed Assets December 31, 2016 2015 ($ in thousands) Leasehold improvements $ 1,954 $ 2,271 Non-depreciable assets 20 20 Furniture and equipment 651 941 Software 390 492 3,015 3,724 Less: Accumulated depreciation and amortization 2,741 3,086 $ 274 $ 638 Depreciation expense for 2016, 2015, and 2014 was $0.2 million, $0.2 million and $0.3 million, respectively.

Goodwill and Identified Intangi

Goodwill and Identified Intangibles Assets	12 Months Ended
	Dec. 31, 2016
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill and Identified Intangibles Assets	Note 8. Goodwill and Identified Intangibles Assets The following table presents the carrying value of goodwill at the reporting unit level: December 31, 2016 2015 ($ in thousands) Goodwill $ 17,884 $ 17,884 Total $ 17,884 $ 17,884 The balance of goodwill at December 31, 2016 and 2015 is a result of the October 7, 2015 FOC Partners acquisition (Note 3). Identified intangible assets consist of customer contracts resulting from the FOC Partners acquisition. The gross carrying amount of the identified intangible assets at December 31, 2016 was $0.6 million. The identified intangible assets are being amortized over their expected economic useful life we estimate to be approximately 33 months. Amortization expense for the years ended December 31, 2016 and 2015, amounted to $0.3 million and $0.5 million, respectively. There was no amortization expense for the same period in .

Borrowings

Borrowings	12 Months Ended
	Dec. 31, 2016
Debt Disclosure [Abstract]
Borrowings	Note 9. Borrowings Credit Facilities As of December 31, 2016 the Company had two credit facilities through certain of its wholly owned subsidiaries: (i) a $615.0 million credit facility with syndicated lenders agented by Wells Fargo Bank, National Association (“Wells Fargo”) to fund leveraged finance loans and (ii) a $250.0 million credit facility with Citibank, N.A. (“Citibank”) to fund leveraged finance 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 December 31, 2016, 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. The Company has a $615.0 million credit facility with syndicated lenders agented by Wells Fargo to fund leveraged finance loans. The credit facility had an outstanding balance of $401.1 million and unamortized deferred financing fees of $6.4 million as of December 31, 2016. In February 2016 and June 2016, the Company upsized this facility, which increased the commitment amount from $475.0 million to $615.0 million. Interest on this facility accrues at a variable rate per annum. The facility matures on August 10, 2020. 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 $53.2 million and unamortized deferred financing fees of $2.4 million as of December 31, 2016. Interest on this facility accrues at a variable rate per annum. The facility provides for a revolving reinvestment period that ends on May 5, 2018, with a two-year amortization period. On December 1, 2016, the Company sold the assets of Equipment Finance and the related platform. In connection with the sale, the company repaid all outstanding indebtedness of Equipment Finance, including amounts outstanding under its $75.0 million note purchase agreement with Wells Fargo, with an outstanding balance of $16.9 million. In September 15, 2016, the Company repaid the $350.0 million note purchase agreement with Credit Suisse that provided the financing to fund the purchase of broadly syndicated bank loans during the warehouse phase of the Arch Street CLO. The supplemental junior note commitment by NewStar Capital was also repaid in full. The notes were repaid from proceeds of the Arch Street CLO bond issuance. On March 31, 2016, the Company sold its membership interest in Business Credit. In connection with the sale, the Company repaid all outstanding indebtedness of Business Credit, including amounts outstanding under the $175.0 million credit facility with a syndicate of lenders agented by DZ Bank AG Deutsche Zentral-Genossenschaftbank Frankfurt (“DZ Bank”) with an outstanding balance of $102.0 million and the $165.0 million credit facility with a syndicate of lenders agented by Wells Fargo with an outstanding balance of $135.4 million, each of which was terminated. The Company accelerated and recognized deferred financing fees of $1.1 million and $0.7 million, respectively, related to the warehouse facilities during the first quarter of 2016. Senior notes On April 22, 2015, the Company issued $300.0 million in aggregate principal amount of 7.25% Senior Notes due 2020 (the “2020 Notes”). On November 9, 2015, the Company issued an additional $80.0 million in aggregate principal amount of 2020 Notes. The 2020 Notes issued on November 9, 2015, were issued at a debt discount of $0.8 million which will amortize over the life of the 2020 Notes. The Company used a portion of the net proceeds from the April notes offering to repay in full its corporate credit facility with Fortress Credit Corp. 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 at which the Franklin Square funds purchased $200.0 million of 10-year subordinated notes (the "Subordinated Notes"), which rank junior to the Company's existing and future senior debt. During 2015, the Company drew an additional $75 million of these Subordinated Notes. The Company drew the remaining $25 million in January 2016. 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 which was $53.7 million as of December 31, 2016 and $60.0 million as of December 31, 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 December 31, 2016, unamortized deferred financing fees were $4.9 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 2012-2 CLO. 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 December 31, 2016, the $233.0 million of outstanding drawn notes were collateralized by the specific loans and investments, principal collection account cash and principal payment receivables totaling $279.2 million. At December 31, 2016, deferred financing fees were $0.7 million. The 2012-2 CLO permitted reinvestment of collateral principal repayments for a three-year period which ended January 2016. The Company receives a loan collateral management fee and excess interest spread. The Company also receives payments with respect to the classes of notes it owns in accordance with the transaction documents. The Company expects to receive a principal distribution as owner of the membership interests when the term debt is retired. If loan collateral in the 2012-2 CLO is in default under the terms of the indenture, the excess interest spread from the 2012-2 CLO may not be distributed if the overcollateralization ratio, or other collateral quality tests, are not satisfied. The following table sets forth selected information with respect to the 2012-2 CLO: Notes originally issued Outstanding balance December 31, 2016 Interest rate Legal final maturity ($ in thousands) 2012-2 CLO Class A $ 190,700 $ 144,053 Libor+1.90% January Class B 26,000 26,000 Libor+3.25% January 20, 2023 Class C 35,200 35,200 Libor+4.25% January 20, 2023 Class D 11,400 11,400 Libor+6.25% January 20, 2023 Class E 16,300 16,300 Libor+6.75% January 20, 2023 $ 279,600 $ 232,953 2013-1 CLO . 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 December 31, 2016, the $321.9 million of outstanding drawn notes were collateralized by the specific loans and investments, principal collection account cash and principal payment receivables totaling $383.3 million. At December 31, 2016, deferred financing fees were $2.6 million. The 2013-1 CLO permitted reinvestment of collateral principal repayments for a three-year period which ended in September 2016. The Company receives a loan collateral management fee and excess interest spread. The Company also receives payments with respect to the classes of notes it owns in accordance with the transaction documents. The Company expects to receive a principal distribution as owner of the membership interests when the term debt is retired. If loan collateral in the 2013-1 CLO is in default under the terms of the indenture, the excess interest spread from the 2013-1 CLO may not be distributed if the overcollateralization ratio, or other collateral quality tests, are not satisfied. The following table sets forth selected information with respect to the 2013-1 CLO: Notes originally issued Outstanding balance December 31, 2016 Interest rate Legal final maturity ($ in thousands) 2013-1 CLO Class A-T $ 202,600 $ 188,349 Libor+1.65% September Class A-R 35,000 32,538 (1) September 20, 2023 Class B 38,000 38,000 Libor+2.30% September 20, 2023 Class C 36,000 36,000 Libor+3.80% September 20, 2023 Class D 21,000 21,000 Libor+4.55% September 20, 2023 Class E 6,000 6,000 Libor+5.30% September 20, 2023 $ 338,600 $ 321,887 (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 the interest rate payable pari passu with the Class A-T Notes exceed the Class A-R Waterfall Rate Cap. 2014-1 CLO . 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 December 31, 2016, 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 December 31, 2016, deferred financing fees were $2.0 million. The 2014-1 CLO permits reinvestment of collateral principal repayments for a four-year period ending in April 2018. Should the Company determine that reinvestment of collateral principal repayments are impractical in light of market conditions or if collateral principal repayments are not reinvested within a prescribed timeframe, such funds may be used to repay the outstanding notes. The Company receives a loan collateral management fee and excess interest spread. The Company also receives payments with respect to the classes of notes it owns in accordance with the transaction documents. The Company expects to receive a principal distribution as owner of the membership interests when the term debt is retired. If loan collateral in the 2014-1 CLO is in default under the terms of the indenture, the excess interest spread from the 2014-1 CLO may not be distributed if the overcollateralization ratio, or other collateral quality tests, are not satisfied. The following table sets forth selected information with respect to the 2014-1 CLO: Notes originally issued Outstanding balance December 31, 2016 Interest rate Legal final maturity ($ in thousands) 2014-1 CLO Class A $ 202,500 $ 202,500 Libor+1.80% April Class B-1 20,000 20,000 Libor+2.60% April 20, 2025 Class B-2 13,250 13,250 (1) April 20, 2025 Class C 30,250 30,250 Libor+3.60% April 20, 2025 Class D 23,500 23,500 Libor+4.75% April 20, 2025 $ 289,500 $ 289,500 (1) Class B-2 Notes accrue interest at a fixed rate of 4.902%. 2015-1 CLO . 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 December 31, 2016, 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 December 31, 2016, deferred financing fees were $3.2 million. The 2015-1 CLO permits reinvestment of collateral principal repayments for a four-year period ending in April 2019. Should the Company determine that reinvestment of collateral principal repayments are impractical in light of market conditions or if collateral principal repayments are not reinvested within a prescribed timeframe, such funds may be used to repay the outstanding notes. The Company receives a loan collateral management fee and excess interest spread. The Company also receives payments with respect to the classes of notes it owns in accordance with the transaction documents. The Company expects to receive a principal distribution as owner of the membership interests when the term debt is retired. If loan collateral in the 2015-1 CLO is in default under the terms of the indenture, the excess interest spread from the 2015-1 CLO may not be distributed if the overcollateralization ratio, or other collateral quality tests, are not satisfied. The following table sets forth selected information with respect to the 2015-1 CLO: Notes originally issued Outstanding balance December 31, 2016 Interest rate Legal final maturity ($ in thousands) 2015-1 CLO Class A-1 $ 253,500 $ 253,500 Libor+1.80% January 20, 2027 Class A-2 35,000 35,000 (1) January 20, 2027 Class B 50,000 50,000 Libor+2.80% January 20, 2027 Class C 38,500 38,500 Libor+3.85% January 20, 2027 Class D 33,250 33,250 Libor+5.50% January 20, 2027 $ 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. 2015-2 CLO. 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 December 31, 2016, 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 December 31, 2016, deferred financing fees were $2.9 million. The 2015-2 CLO permits reinvestment of collateral principal repayments for a four-year period ending in August 2019. Should the Company determine that reinvestment of collateral principal repayments are impractical in light of market conditions or if collateral principal repayments are not reinvested within a prescribed timeframe, such funds may be used to repay the outstanding notes. The Company receives a loan collateral management fee and excess interest spread. The Company also receives payments with respect to the classes of notes it owns in accordance with the transaction documents. The Company expects to receive a principal distribution as owner of the membership interests when the term debt is retired. If loan collateral in the 2015-2 CLO is in default under the terms of the indenture, the excess interest spread from the 2015-2 CLO may not be distributed if the overcollateralization ratio, or other collateral quality tests, are not satisfied. The following table sets forth selected information with respect to the 2015-2 CLO: Notes originally issued Outstanding balance December 31, 2016 Interest rate Legal final maturity ($ in thousands) 2015-2 CLO Class A-1 $ 205,000 $ 205,000 Libor+2.00% August 25, 2027 Class A-2 23,000 23,000 (1) August 25, 2027 Class B 40,000 40,000 Libor+2.90% August 25, 2027 Class C 26,250 26,250 Libor+3.95% August 25, 2027 Class D 28,500 28,500 Libor+5.25% August 25, 2027 Class E 5,000 5,000 Libor+7.50% August 25, 2027 $ 327,750 $ 327,750 (1) Class A-2 Notes accrue interest at a fixed rate of 3.461%. 2016-1 CLO. On March 2, 2016, the Company completed a term debt securitization transaction through its separate single-purpose bankruptcy-remote subsidiary, NewStar Commercial Loan Funding 2016-1 LLC (the “2016-1 CLO”) and sold and contributed $247.3 million in loans and investments (including unfunded commitments), or portions thereof, to the 2016-1 CLO. The Company remains the servicer of the loans. Simultaneously with the initial sale and contribution, the 2016-1 CLO issued $255.8 million of notes to institutional investors. The Company retained $92.2 million, comprising 100% of the 2016-1 CLO’s membership interests, and the Class D and Class E notes. During the fourth quarter of 2016, the Company sold $7.5 million of the Class D notes. At December 31, 2016, the $263.3 million of outstanding drawn notes were collateralized by the specific loans and investments, principal collection account cash and principal payment receivables totaling $348.0 million. At December 31, 2016, unamortized deferred financing fees were $2.4 million. The 2016-1 CLO permits reinvestment of collateral principal repayments for a four-year period ending in February 2020. Should the Company determine that reinvestment of collateral principal repayments are impractical in light of market conditions or if collateral principal repayments are not reinvested within a prescribed timeframe, such funds may be used to repay the outstanding notes. The following table sets forth selected information with respect to the 2016-1 CLO: Notes originally issued Outstanding balance December 31, 2016 Interest rate Legal final maturity ($ in thousands) 2016-1 CLO Class A-1 $ 176,500 $ 176,500 Libor+2.30% February 25, 2028 Class A-2 20,000 20,000 (1) February 25, 2028 Class B 36,750 36,750 Libor+3.75% February 25, 2028 Class C 22,500 22,500 Libor+5.40% February 25, 2028 Class D 7,500 7,500 Libor+5.50% February 25, 2028 $ 263,250 $ 263,250 (1) Class A-2 Notes accrue interest at a fixed rate of 3.44%. Arch Street CLO. On September 15, 2016, NewStar Capital LLC completed a $409.8 million broadly syndicated loan securitization. The notes offered in the collateralized loan obligation (“Arch Street CLO”) were issued by Arch Street CLO, Ltd., an exempted company incorporated under the laws of the Cayman Islands, and (with the exception of the Class E and F notes) by Arch Street CLO, LLC, a Delaware limited liability company (each a subsidiary of NewStar Capital and collectively, “Arch Street”). The Arch Street CLO notes are backed by a diversified portfolio of broadly syndicated loans purchased and serviced by the Company. Investors purchased approximately $370.3 million of the Arch Street CLO notes, representing approximately 90.4% of the total capitalization of Arch Street. The Company retained all of the Class F notes and subordinated notes which together totaled approximately $39.5 million, representing approximately 9.6% of the total capitalization of Arch Street. At December 31, 2016, the outstanding note balance was $370.3 million and unamortized deferred financing fees were $4.2 million. The reinvestment period is expected to end in October 2020 and scheduled to mature in October 2028. The Company receives a loan collateral management fee and excess interest spread. The Company also receives payments with respect to the classes of notes it owns in accordance with the transaction documents. The Company expects to receive a principal distribution as owner of the membership interests when the term debt is retired. If loan collateral in the Arch Street CLO is in default under the terms of the indenture, the excess interest spread from the Arch Street CLO may not be distributed if the overcollateralization ratio, or other collateral quality tests, are not satisfied. Notes originally issued Outstanding balance December 31, 2016 Interest rate Legal final maturity ($ in thousands) Arch Street CLO Class X $ 2,500 $ 2,500 Libor+1.25% October 20, 2028 Class A 256,000 256,000 Libor+1.65% October 20, 2028 Class B 48,000 48,000 Libor+2.24% October 20, 2028 Class C 20,000 20,000 Libor+3.00% October 20, 2028 Class D 22,750 22,750 Libor+4.20% October 20, 2028 Class E 21,000 21,000 Libor+6.95% October 20, 2028 $ 370,250 $ 370,250 2007-1 CLO. 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 million in loans and investments (including unfunded commitments), or portions thereof, to the 2007-1 CLO Trust. The Company remained 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. 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. On November 30, 2016, the Company called the 2007 CLO Trust and redeemed the notes at par. In conjunction with the call, the Company received a principal distribution of $35.8 million. 2015-1 ABS . 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 remained 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. On October 17, 2016, the Company called the 2015-1 ABS and redeemed the notes at par. In conjunction with the call, the Company received a principal distribution of $12.8 million. The Company accelerated and recognized deferred financing fees of $1.1 million related to the repayment of the 2015-1 ABS. 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 $10.0 million Term C Loan. On April 22, 2015, the Company repaid in full the term note with Fortress Credit Corp. Debt Maturities The contractual obligations under credit facilities and term debt as of December 31, 2016 were as follows: Credit facilities Term debt(1) Senior notes Subordinated notes Total ($ in thousands) 2017 $ — $ — $ — $ — $ — 2018 — — — — — 2019 — — — — — 2020 454,300 — 380,000 — 834,300 2021 — — — — — Thereafter — 2,215,840 — 300,000 2,515,840 Total $ 454,300 $ 2,215,840 $ 380,000 $ 300,000 $ 3,350,140 (1) Maturities for term debt are based on contractual maturity dates. Actual maturities may occur earlier.

Repurchase Agreements

Repurchase Agreements	12 Months Ended
	Dec. 31, 2016
Banking And Thrift [Abstract]
Repurchase Agreements	Note 10. Repurchase Agreements 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 December 31, 2016, the outstanding balance was zero. 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 December 31, 2016, the outstanding balance was $31.3 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. A portion of the proceeds from our senior notes offering in November 2015 were used to pay down this facility. As of December 31, 2016, the outstanding balance was $22.0 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 Natixis Securities Americas LLC pursuant to the terms of a Global Master Repurchase Agreement (2000 version), dated as of October 14, 2015 between Natixis Securities Americas LLC and NS Bond Funding III LLC (the “Natixis Repurchase Agreement”). Pursuant to the Natixis Repurchase Agreement, Natixis Securities Americas LLC will purchase securities and simultaneously agree to sell the securities back to the Company at a specified date. Under the terms of the Natixis 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 December 31, 2016, the outstanding balance was $1.7 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. 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 was 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. On October 2, 2013, the Company entered into an amendment to this financing arrangement which, among other things, extended the date by which we 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. On August 29, 2016, the Company redeemed in full the five-year, $68.0 million financing arrangement with Macquarie Bank Limited with an outstanding balance of $10.7 million. The Company accelerated and recognized deferred financial fees of $0.3 million related to repurchase facility during 2016.

Commitments

Commitments	12 Months Ended
	Dec. 31, 2016
Commitments And Contingencies Disclosure [Abstract]
Commitments	Note 11. Commitments The Company has non-cancelable operating leases for office space and office equipment and furniture. These leases expire over the next five years and contain provisions for certain annual rental escalations. Future minimum lease payments under non-cancelable operating leases as of December 31, 2016 were as follows: ($ in thousands) 2017 $ 1,567 2018 1,409 2019 1,306 2020 576 2021 — Thereafter — Rent expense was $2.1 million, $2.2 million and $2.0 million for the years ended December 31, 2016, 2015 and 2014, respectively. The Company’s office space lease at its corporate headquarters in Boston, MA is scheduled to terminate on February 28, 2020.

Stockholders' Equity

Stockholders' Equity	12 Months Ended
	Dec. 31, 2016
Equity [Abstract]
Stockholders' Equity	Note 12. Stockholders’ Equity Stockholders’ Equity As of December 31, 2016 and 2015, the Company’s authorized capital consists of preferred and common stock and the following was authorized and outstanding: December 31, 2016 December 31, 2015 Shares authorized Shares outstanding Shares authorized Shares outstanding (In thousands) Preferred stock 5,000 — 5,000 — Common stock 145,000 42,820 145,000 46,527 Preferred Stock 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 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 the 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. 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 were 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. Upon completion of the stock repurchase program, the Company had repurchased 892,911 shares of its common stock at a weighted average price per share of $11.20. 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 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 October 7, 2015, the Company’s Board of Directors authorized the repurchase of up to $5.0 million of the Company’s common stock from time to time in open market or in privately negotiated transactions. The timing and amount of any shares purchased was determined by the Company’s management based on its evaluation of market conditions and other factors. Upon completion of the stock repurchase program, the Company had repurchased 2,640,544 shares of its common stock under this program at a weighted average price per share of $7.85, On October 21, 2016, the Company’s Board of Directors authorized the repurchase of 2,500,000 shares of the Company’s common stock in privately negotiated transactions outside of the Company’s previously announced stock repurchase program. On December 9, 2016, the Company’s Board of Directors authorized the repurchase of up to $30.0 million of the Company’s common stock from time to time on the open market or in privately negotiated transactions. Warrants On December 4, 2014, the Company issued warrants to purchase 9,500,000 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. At December 31, 2016, the warrants had a fair value of $63.6 million, net of assumed transaction costs. On January 23, 2015, the Company completed its issuance of warrants as part of the strategic relationship with Franklin Square. The Company issued additional warrants to purchase 2,500,000 million shares of its common stock subject to the same terms as the warrants that were issued on December 4, 2014. Restricted Stock During 2014, the Company issued 91,360 shares of restricted stock to certain employees of the Company pursuant to the Company’s 2006 Incentive Plan, as amended and 43,648 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 vest in three equal installments on each of the first three anniversaries of the date of grant. During 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 vest in three equal installments on each of the first three anniversaries of the date of grant. During 2016, the Company issued 523,903 shares of restricted stock to certain employees of the Company pursuant to the Company’s 2006 Incentive Plan, as amended and 74,020 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. Restricted stock activity for 2016 and 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 (219,802 ) (2,710 ) Forfeited (6,060 ) (74 ) Non-vested as of December 31, 2015 496,704 5,629 Granted 597,923 3,835 Vested (250,846 ) (2,876 ) Forfeited (2,947 ) (24 ) Non-vested as of December 31, 2016 840,834 6,564 The Company’s compensation expense related to its restricted stock was $3.7 million, $3.3 million and $2.5 million for 2016, 2015 and 2014, respectively. The unrecognized compensation cost of $2.3 million at December 31, 2016 is expected to be recognized over approximately 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. On May 12, 2010, stock options exercisable for an aggregate of 629,105 shares of common stock were issued to certain employees of the Company. The stock options have an exercise price of $8.28, which is equal to the closing price of the Company’s common stock on the date of issuance. The options granted vested in three equal installments on each of the first three anniversaries of the May 12, 2010 grant date and have a seven-year life. On November 1, 2010, stock options exercisable for an aggregate of 60,000 shares of common stock were issued to certain employees of the Company. The stock options have an exercise price of $7.52, which is equal to the closing price of the Company’s common stock on the date of issuance. The options granted vested in two equal installments on each of the first two anniversaries of the November 1, 2010 grant date and have a seven-year life. On December 1, 2010, stock options exercisable for an aggregate of 50,000 shares of common stock were issued to certain employees of the Company. The stock options have an exercise price of $8.74, which is equal to the closing price of the Company’s common stock on the date of issuance. The options granted vested in two equal installments on each of the first two anniversaries of the December 1, 2010 grant date and have a seven-year life. During 2011, stock options exercisable for an aggregate of 52,500 shares of common stock were issued to certain employees of the Company pursuant to the Company’s 2006 Equity Incentive Plan, as amended and stock options exercisable for an aggregate of 55,000 shares were issued to certain members of its Board of Directors. The stock options have exercise prices between $10.11 and $10.59, representing the closing prices of the common stock on the respective dates of issuance. The options granted to employees vested in three equal installments on each of the first three anniversaries of the date of grant and have a seven-year life. The options granted to directors vested in full on the one-year anniversary of the date of grant and have a seven–year life. Stock option activity for 2016 and 2015 was as follows: Options Weighted average exercise price Weighted average remaining contractual life (in years) Outstanding as of December 31, 2014 4,628,439 5.00 2 Granted — — 0 Exercised (2,092,092 ) 3.22 0 Forfeited (22,815 ) 14.02 1 Outstanding as of December 31, 2015 2,513,532 5.75 1 Granted — — 0 Exercised (1,761,926 ) 3.04 0 Forfeited (329,914 ) 16.37 0 Outstanding as of December 31, 2016 421,692 8.72 1 Vested and exercisable as of December 31, 2016 421,692 8.72 1 The Company did not grant any options during 2016 or 2015. As of December 31, 2016 and 2015, the Company has recognized all compensation costs related to options granted. During 2014, the Company recognized compensation expense of $0.1 million, respectively related to its stock options.

Earnings Per Share

Earnings Per Share	12 Months Ended
	Dec. 31, 2016
Earnings Per Share [Abstract]
Earnings Per Share	Note 13. 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 the 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 earnings per share for the periods ended December 31, 2016, 2015 and 2014 are as follows: December 31, 2016 2015 2014 (In thousands) Numerator: Net income to common shareholders $ 28,224 $ 16,890 $ 10,594 Net income allocated to participating securities - basic and diluted 490 182 72 Net income allocated to common shareholders - basic and diluted $ 27,734 $ 16,708 $ 10,522 Denominator: Denominator for basic earnings per common share 45,592 45,631 48,267 Denominator for diluted earnings per common share: Potentially dilutive securities—options 26 1,904 3,229 Potentially dilutive securities—restricted stock — — — Potentially dilutive securities—warrants — — 79 Total weighted average diluted shares 45,618 47,535 51,575 Earnings per common share Basic $ 0.61 $ 0.37 $ 0.22 Diluted 0.61 0.35 0.21 Warrants to purchase common stock totaling 12,000,000 were not included in the computation of earnings per share for the years ended December 31, 2016 and 2015 due to the fact that the results would be anti-dilutive.

Variable Interest Entity

Variable Interest Entity	12 Months Ended
	Dec. 31, 2016
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Variable Interest Entity	Note 14. Variable Interest Entity On October 1, 2015, the Company adopted ASU 2015-2, Consolidation – Amendments to the Consolidation Analysis The Company sponsors the formation of various entities that are considered to be VIEs. The majority of 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 it 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 9. Unconsolidated VIEs In November 2016, NewStar closed a new managed credit fund, NewStar Berkeley Fund CLO LLC (the “Berkeley Fund”), a $505 million term debt securitization. The Berkeley Fund is the fourth credit fund established by the Company to co-invest in directly originated middle market commercial loans. To comply with European Union (“EU”) risk retention rules, the Company holds 5% of each class of notes in the securitization (vertical strip), totaling $25.3 million. The Berkeley Fund employs an independent investment professional who is responsible for investment decision making on behalf of the fund. The Company has determined that it is not the primary beneficiary of the Berkeley Fund and will not consolidate the Berkeley Fund’s operating results or statements of financial position; however, the Company has determined that it has a variable interest in the Berkeley Fund as it holds notes of the securitization. In January 2015, NewStar closed a new managed credit fund, 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 notes in the securitization (vertical strip), totaling $20.4 million. The Clarendon Fund employs an independent investment professional who is responsible for investment decision making on behalf of the fund. The Company has determined that it is not the primary beneficiary of the Clarendon Fund and will not consolidate the Clarendon Fund’s operating results or statements of financial position; however, the Company has determined it has a variable interest in the Clarendon Fund as it holds notes of the securitization. In October 2015, NewStar acquired FOC Partners, which now operates as NewStar Capital. At acquisition, NewStar Capital was the investment manager for six collateralized loan obligations and two sponsored funds and provided discretionary services to a series of separately managed accounts. The Company determined that it was not the primary beneficiary of any of acquired CLOs, sponsored funds or separately managed accounts; however, the Company determined that it had a variable interest in a fund as it holds approximately one percent of the interest of the fund. The following table sets forth the information with respect to the unconsolidated VIEs for which the Company holds a variable interest in as of December 31, 2016 and 2015: December 31, 2016 December 31, 2015 ($ in thousands) Unconsolidated VIE assets $ 912,900 $ 483,581 Unconsolidated VIE liabilities 810,030 362,383 Equity interest included on the Consolidated Balance Sheet 50,386 23,910 Maximum risk of loss (1) 50,794 24,327 (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 . Former Unconsolidated VIEs 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 the 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 2014, the management fee was $0.5 million. 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 2014, interest expense on the Class B Notes totaled $0.7 million. For 2014, the Fund distributed excess cash to its institutional investor totaling $0.7 million. 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. 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 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 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. As a result of the re-evaluation of the Company’s VIEs, the Arlington Program is no longer considered a VIE.

Financial Instruments with Off-

Financial Instruments with Off-Balance Sheet Risk	12 Months Ended
	Dec. 31, 2016
Commitments And Contingencies Disclosure [Abstract]
Financial Instruments with Off-Balance Sheet Risk	Note 15. 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 may exceed the Company’s available funds. At December 31, 2016, the Company had $326.1 million of unused lines of credit. Of these unused lines of credit, unfunded commitments related to revolving credit facilities were $257.5 million and unfunded commitments related to delayed draw term loans were $68.6 million. These commitments may expire without being drawn upon as such the total commitment does not necessarily represent future cash requirements. The credit risk involved in issuing letters of credit is essentially the same as that involved in extending credit to our borrowers. Standby letters of credit are conditional commitments issued by us to guarantee the performance by a borrower to a third party. Financial instruments with off-balance sheet risk are summarized as follows: December 31, 2016 2015 ($ in thousands) Unused lines of credit $ 326,051 $ 601,805 Standby letters of credit 8,239 8,696

Total Return Swap

Total Return Swap	12 Months Ended
	Dec. 31, 2016
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Total Return Swap	Note 16. Total Return Swap The Company was a participant in a Total Return Swap (“TRS”), which matured on March 31, 2016. We acted as the manager of the TRS and selected the specific loans to be subject to the TRS. The TRS did not qualify for hedge accounting treatment as it did not offset the risks of another investment position. The underlying referenced loan portfolio of the TRS was primarily large, liquid, broadly syndicated senior secure floating rate loans with Citibank, N.A. as the counterparty. The TRS effectively added leverage to the Company's portfolio by providing economic benefits of the loans subject to the TRS, despite the fact that such loans were not directly owned the Company, in return for an interest-type payment to Citibank. On December 4, 2014, NewStar TRS I LLC, a newly-formed subsidiary of the Company, entered into a total return swap of senior secured floating rate loans with Citibank, N.A. The initial maximum market value (determined at the time such loan became subject to the TRS) of the portfolio of loans subject to the TRS was $75.0 million. On March 2, 2015, we entered into an amendment to the TRS that increased the maximum value to $150.0 million, and on July 14, 2015, we entered into an additional amendment to the TRS that increased the maximum value to $175.0 million. Upon maturity of the TRS on March 31, 2016, the Company purchased $138.9 million of the loans in the referenced portfolio. The majority of these loans were purchased to fund future CLOs of the Company and its wholly owned subsidiary NewStar Capital. The Company recorded these loans at fair value which was determined by using the midpoint of the bid-ask spread provided by an independent third-party pricing service. The Company recorded interest income from the TRS portfolio of $2.2 million, interest expense from the TRS portfolio of $0.8 million, and a realized loss on the TRS of $6.1 million in the consolidated statement of operations for the year ended December 31, 2016. At December 31, 2015, the receivable and realized loss on the total return swap on the consolidated balance sheet and consolidated statements of operations consisted of the following: Net Receivable Net Realized Gains/(Losses) ($ in thousands) Interest income from TRS portfolio $ — $ 8,667 TRS interest expense — 2,652 Realized loss on TRS (5,816 ) (4,822 ) TRS receivable 1,377 — The fair value of the TRS was reflected as an unrealized gain or loss on the total return swap on the consolidated balance sheet, within other assets or liabilities. The change in value of the TRS was reflected in the consolidated statements of operations as loss on total return swap. As of December 31, 2015, the fair value of the underlying referenced portfolio was $155.6 million. The Company's obligations under the TRS were non-recourse to it, and its exposure was limited to the value of the cash collateral which fluctuated from time to time depending on the market value of the underlying loans. The Company was required to cash collateralize a specified percentage of each loan included under the TRS in accordance with margin requirements. As of December 31, 2016 and 2015, the Company had cash collateral on deposit with Citibank of $0 and $56.5 million, respectively. The Company paid interest to Citibank for each loan at a rate equal to one-month LIBOR plus 1.60% per annum. Upon the termination or repayment of any loan under the TRS Agreement, the Company would deduct the appreciation of such loan's value from any interest owed to Citibank or pay the depreciation amount to Citibank in addition to remaining interest payments.

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Income Taxes	Note 17. Income Taxes The components of income tax expense are as follows: December 31, 2016 2015 2014 ($ in thousands) Current tax expense: Federal $ 25,300 $ 8,613 $ 3,245 State 4,475 4,006 1,667 Total current 29,775 12,619 4,912 Deferred tax expense (benefit): Federal (9,883 ) 426 2,440 State 535 (1,094 ) 133 Total deferred (9,348 ) (668 ) 2,573 Income tax expense $ 20,427 $ 11,951 $ 7,485 The Company’s effective tax rate for 2016 and 2015 reflects the impact of tax filing in additional states and changes in the tax rate on cumulative temporary differences. The effective tax rate differed from the statutory federal corporate rate of 35% as follows: December 31, 2016 2015 2014 ($ in thousands) Federal statutory rate $ 17,028 $ 10,094 $ 6,328 State income taxes, net of federal tax benefit 3,256 1,893 1,170 Other 143 (36 ) (13 ) $ 20,427 $ 11,951 $ 7,485 Deferred income taxes are recorded when revenues and expenses are recognized in different periods for financial statement and income tax purposes. As of December 31, 2016 and 2015, components of deferred tax assets and liabilities are as follows: December 31, 2016 2015 ($ in thousands) Deferred tax asset: Allowance for credit losses $ 23,353 $ 29,105 Capitalized startup costs — 103 Other 4,243 1,483 Securities fair value adjustments 2,491 4,166 Equity compensation 2,505 6,950 Accrued bonus and severance 6,886 6,728 Income from non-performing assets 4,329 4,325 Equity positions 1,272 — Other real estate owned 73 — Intangible Assets 293 196 Gross deferred tax asset 45,445 53,056 Deferred tax liability: Prepaid expenses 1,091 1,226 Mark-to-market loans 294 420 Deferred loan costs 1,488 1,971 Cancellation of term debt income 1,185 1,778 Equity positions — 2,498 Equipment leasing — 11,113 Goodwill 580 917 Gross deferred tax liability 4,638 19,923 Net deferred tax asset $ 40,807 $ 33,133 As of December 31, 2016 and 2015, we had net deferred tax assets of $40.8 million and $33.1 million, respectively. In assessing the realizability of deferred tax assets, management considers whether it is more likely than not that some portion or all of the deferred tax assets will not be realized. The Company’s management considered all available evidence, both positive and negative, in determining the realizability of deferred tax assets at December 31, 2016. Management considered carryback availability, the scheduled reversals of deferred tax liabilities, projected future taxable income during the reversal periods, and tax planning strategies in making this assessment. Management also considered our recent history of taxable income, trends in our earnings, positive financial ratios, and the impact of the downturn in the current economic environment (including the impact of credit on allowance and provision for loan losses) on the Company. Based upon its assessment, management believes that a valuation allowance was not necessary as of December 31, 2016. As of December 31, 2016 and 2015, the Company did not have any material accrued interest, penalties or uncertain tax positions. The Company files U.S. federal and various state income tax returns. As of December 31, 2016, the Company is subject to examination by the Internal Revenue Service and most state tax authorities for tax years after December 31, 2012. A few states remain subject to examination for the year ended December 31, 2011. During 2016, the Company received an examination notification from the Internal Revenue Service for the 2014 tax year. There have been no significant issues identified and the examination is still in process at December 31, 2016.

Fair Value

Fair Value	12 Months Ended
	Dec. 31, 2016
Fair Value Disclosures [Abstract]
Fair Value	Note 18. Fair Value ASC 820, Fair Value Measurements and disclosures, • 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 is a description of the valuation methodologies used for instruments measured at fair value, including the general classification of such instruments pursuant to the valuation hierarchy. Items Recorded at Fair Value on a Recurring Basis Investments in debt securities, available-for-sale Investments in debt securities available-for-sale are recorded at fair value on a recurring basis. The fair value measurement of investments in debt securities is based on third party pricing services or by using internally developed financial models. For securities in less liquid markets where there is limited activity and little transparency around broker quotes used to value such securities, the Company classifies securities valued using broker quotes as Level 3. If quoted prices are not available, then fair value is estimated by using internally developed financial models. These securities are not actively traded and require a private sale, and the valuation involves application of significant management judgment. Inputs into the model-based valuations can include changes in market indexes, selling prices of similar securities, management’s assumptions related to the credit rating of the security, prepayment assumptions and other factors such as credit loss assumptions and management’s assessment of the current market conditions. Such securities are classified as Level 3, as the valuation models are based on significant inputs that are unobservable in the market. Loans Loans designated to Credit Funds managed by NewStar Capital are recorded at fair value on a recurring basis. The Company has elected to apply fair value option accounting to these loans which is consistent with the manner in which the Credit Funds are managed. The fair value of these loans are based on third party pricing services. These loans are classified as Level 2. During the twelve months ended December 31, 2016, the Company recorded a $5.5 million gain from the change in fair value which was recorded in other miscellaneous income, net. Total return swap The fair value of the total return swap was based on third party pricing services who collect prices through a variety of methods including dealer runs, indicative sheets and online posts. The Company recorded the total return swap with Citibank as Level 2. At December 31, 2016, the Company no longer participated in the TRS. At December 31, 2015, the TRS was included within Other liabilities on the consolidated balance sheet. The TRS had a maximum notional amount of $175.0 million and was carried at an estimated fair value of $(4.4) million, comprised of $1.4 million of interest receivable and an unrealized loss of $5.8 million on the underlying loan portfolio. Contingent Liability The contingent liability relating to potential credit indemnification obligations in connection with the Equipment Finance sale is recorded at fair value on a recurring basis. The measurement of the contingent liability is based on the Company’s periodic portfolio review of the then outstanding loans and leases sold. The Company has an agreement with the third party buyer to provide a review of the portfolio on a periodic basis. The Company uses the portfolio review, historical knowledge of the portfolio, changes in market indexes, management’s assumptions related to the credit rating, prepayment and collateral value assumptions and other factors such as current market conditions to calculate management’s best estimate of expected losses. This contingent liability is classified as a Level 3. Items Measured at Fair Value on a Nonrecurring Basis Collateral dependent impaired loans Collateral dependent loans that are deemed to be impaired are valued based upon the fair value of the underlying collateral. For collateral dependent loans for which repayment is dependent on the sale of the collateral, management adjusts the fair value for estimated costs to sell. For collateral dependent loans for which repayment is dependent on the operation of the collateral, management may also adjust values to reflect estimated market value declines or apply other discounts to appraised values. Collateral dependent impaired loans are categorized as Level 3. During the twelve months ended December 31, 2016, the Company recorded $4.3 million of specific allowance for credit losses related to “Collateral dependent impaired loans” measured at fair value at December 31, 2016, of which $4.2 million was subsequently charged off when the impaired loans were transferred to the held-for-sale portfolio. During 2015, the Company recorded $0.3 million of specific allowance for credit losses related to “Collateral dependent impaired loans” measured at fair value. Loans held-for-sale Loans held-for-sale are carried at the lower of cost or fair value. Loans held-for-sale measured at fair value may consist of loans that have had credit downgrades and/or have remained in the loans held-for-sale portfolio for a significant period of time. When fair value is determined to be the carrying value, the fair values of these loans are obtained through a third party pricing service or by using internally developed financial models. Inputs into the model-based valuations can include changes in market indexes, selling prices of similar loans, management’s assumption related to the credit rating of the loan, prepayment assumptions and other factors, such as credit loss assumptions. Where quoted market prices are obtained through dealer quotes, broker indicative prices or online posts, loans held-for-sale are classified as Level 2. Loans held-for-sale are classified as Level 3 in instances where valuation models are based on significant inputs that are unobservable in the market. During the twelve months ended December 31, 2016, the Company recorded a $2.4 million gain related to “Loans, held-for-sale” measured at fair value. During 2015, the Company recorded a $2.6 million loss related to “Loans, held-for-sale” measured at fair value. Other real estate owned or repossessed assets The fair value of other real estate owned or repossessed assets is estimated using one of several methods, including collateral value, market value of similar properties, liquidation value and discounted cash flows. Management may adjust the fair value for estimated costs to sell or adjust values to reflect estimated market value declines or apply other discounts to values. The Company records the other real estate owned and repossessed assets as Level 3. During the twelve months ended December 31, 2016, the Company recorded a $0.3 million expense to write down other real estate owned to fair value. The following table presents recorded amounts of assets and liabilities measured at fair value on a recurring and nonrecurring basis as of December 31, 2016, by caption in the consolidated balance sheet and by ASC 820 valuation hierarchy (as described above). Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Carrying Value in Consolidated Balance Sheet ($ in thousands) Recurring Basis: Assets: Investments in debt securities, available-for-sale $ — $ — $ 119,307 $ 119,307 Loans — 403,745 — 403,745 Total assets recorded at fair value on a recurring basis $ — $ 403,745 $ 119,307 $ 523,052 Liabilities: Contingent liability $ — $ — $ 1,350 $ 1,350 Total liabilities recorded at fair value on a recurring basis $ — $ — $ 1,350 $ 1,350 Nonrecurring Basis: Assets: Loans, held-for-sale $ — $ 69,875 $ 75,531 $ 145,406 Other real estate owned/repossessed assets — — 15,750 15,750 Total assets recorded at fair value on a nonrecurring basis $ — $ 69,875 $ 91,281 $ 161,156 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: Assets: Investments in debt securities, available-for-sale $ — $ — $ 94,177 $ 94,177 Total assets recorded at fair value on a recurring basis $ — $ — $ 94,177 $ 94,177 Liabilities: TRS $ — $ 4,439 $ — $ 4,439 Total liabilities recorded at fair value on a recurring basis $ — $ 4,439 $ — $ 4,439 Nonrecurring Basis: Assets: Collateral dependent impaired loans $ — $ — $ 27,473 $ 27,473 Loans, held-for-sale — 140,151 — 140,151 Other real estate owned/repossessed assets — — 250 250 Total assets recorded at fair value on a nonrecurring basis $ — $ 140,151 $ 27,723 $ 167,874 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, 2016. Fair value Valuation Techniques Unobservable Input Range ($ in thousands) Financial assets: Investments in debt securities, available-for-sale $ 119,307 Broker quotes Pricing assumptions such as prepayment rates, interest rates, loss assumptions, cash flow projections, and comparisons to similar financial instruments Loans and leases, net 75,531 Market comparables Cost to sell 3% - 7% Valuation model Marketability discount 5% - 30% Other real estate owned/repossessed assets 15,750 Appraisal Cost to sell 3% - 7% Total Assets: $ 210,588 Financial liabilities: Contingent liability $ 1,350 Valuation model PoD/LGD Total Liabilities: $ 1,350 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, 2015. Fair value Valuation Techniques Unobservable Input Range ($ in thousands) Financial assets: Investments in debt securities, available-for-sale $ 94,177 Broker quotes Pricing assumptions such as prepayment rates, interest rates, loss assumptions, cash flow projections, and comparisons to similar financial instruments Loans and leases, net 27,473 Market comparables Cost to sell 3% - 7% 250 Valuation model Marketability discount 5% - 30% Total: $ 121,900 Changes in Level 3 recurring fair value measurements The table below illustrates the change in balance sheet amounts during 2016 and 2015 (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 2016 and 2015. For the year ended December 31, 2016: Investments in Debt Securities, Available- for-sale Contingent Liability ($ in thousands) Balance as of December 31, 2015 $ 94,177 $ — Total gains or losses (realized/unrealized) Included in earnings 875 — Included in other comprehensive income 3,942 — Initial recognition 1,350 Purchases 26,313 — Issuances — — Settlements (6,000 ) — Balance as of December 31, 2016 $ 119,307 $ 1,350 For the year ended December 31, 2015: Investments Debt Securities, Available- for-sale ($ in thousands) Balance as of December 31, 2014 $ 46,881 Total gains or losses (realized/unrealized) Included in earnings 791 Included in other comprehensive income (10,097 ) Purchases 89,602 Issuances — Settlements (33,000 ) Balance as of December 31, 2015 $ 94,177 The following table presents the carrying amounts and estimated fair values of the Company’s financial instruments at December 31, 2016 and 2015. The fair value of a financial instrument is the amount at which the instrument could be exchanged in a current transaction between willing parties. December 31, 2016 December 31, 2015 Carrying amount Fair value Carrying amount Fair value ($ in thousands) Financial assets: Cash and cash equivalents $ 154,480 $ 154,480 $ 35,933 $ 35,933 Restricted cash 262,643 262,643 153,992 153,992 Cash collateral on deposit with custodians 7,564 7,564 61,081 61,081 Investments in debt securities available-for-sale 119,307 119,307 94,177 94,177 Loans and leases, net 3,239,191 3,241,910 3,134,072 3,147,117 Loans held-for-sale 144,060 145,406 478,785 483,781 Other assets 15,954 15,954 14,255 14,255 Financial liabilities: Credit facilities (1) $ 445,493 $ 445,493 $ 832,686 $ 832,686 Term debt (1) 2,195,064 2,230,102 1,821,519 1,819,344 Repurchase agreements (1) 55,046 55,046 96,224 101,433 Senior notes (1) 373,919 380,000 372,153 368,600 Subordinated notes (1) 241,390 303,916 209,509 266,857 Other liabilities 1,350 1,350 4,439 4,439 (1) Prior year has been adjusted to reflect the adoption of ASU 2015-03. 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 December 31, 2016 and 2015. The table excludes financial instruments for which the carrying amount approximates fair value such as cash and cash equivalents, restricted cash, cash collateral on deposit with custodians, investments in debt securities, available-for-sale, and financial information disclosed above. Fair Value Measurements December 31, 2016 Carrying amount Fair value Level 1 Level 2 Level 3 ($ in thousands) Financial assets: Loans and leases, net $ 3,239,191 $ 3,241,910 $ — $ — $ 3,241,910 Loans held-for-sale 144,060 145,406 — 69,875 75,531 Other assets 15,954 15,954 — — 15,954 Financial liabilities: Credit facilities 445,493 445,493 — 445,493 — Term debt securitizations 2,195,064 2,230,102 — 2,230,102 — Repurchase agreements 55,046 55,046 — 55,046 — Senior notes 373,919 380,000 — 380,000 — Subordinated notes 241,390 303,916 — — 303,916 Other liabilities 1,350 1,350 — — 1,350 December 31, 2015 Carrying amount Fair value Level 1 Level 2 Level 3 ($ in thousands) Financial assets: Loans and leases, net $ 3,134,072 $ 3,147,117 $ — $ — $ 3,147,117 Loans held-for-sale 478,785 483,781 — 483,781 — Other assets 14,255 14,255 — — 14,255 Financial liabilities: Credit facilities (1) 832,686 832,686 — 832,686 — Term debt securitizations (1) 1,821,519 1,819,344 — 1,819,344 — Repurchase agreements (1) 96,224 101,433 — 101,433 — Senior notes (1) 372,153 368,600 — 368,600 — Subordinated notes (1) 209,509 266,857 — — 266,857 Other liabilities 4,439 4,439 — 4,439 — (1) Prior year has been adjusted to reflect the adoption of ASU 2015-03. The methodologies for estimating the fair value of financial instruments that are measured at fair value on a recurring or nonrecurring basis are discussed above. The methodologies for other financial instruments are discussed below. Cash and cash equivalents, restricted cash and cash collateral on deposit with custodians: The carrying amounts approximate fair value because of the short maturity of these instruments. Credit facilities: Due to the adjustable rate nature of the borrowings, the fair values of the credit facilities are estimated to approximate 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 was based on available 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. Other assets/other liabilities : Comprised of non-public investments, contingent liability and through March 31, 2016, the total return swap. The non-public investments are carried within other assets at $16.0 million and $14.3 million, as of December 31, 2016 and 2015, respectively. These investments are in the form of equity or warrants and are obtained as part of the loan origination process. The investments are initially recorded at cost and reviewed quarterly. If the fair value is less than cost then the investment is written down to fair value with the necessary adjustment recorded through current earnings. Fair value is determined using internally developed valuation models. Where sufficient data exists, a market approach method is utilized to estimate the current value of the underlying company. The estimated fair value of the underlying securities for warrants requiring valuation at fair value is adjusted for discounts related to lack of liquidity. The Company classifies equity and warrants as Level 3. The contingent liability was included in other liabilities as of December 31, 2016. Its fair value was based on periodic portfolio review and various assumptions used by management. The Company classifies the contingent liability as Level 3. The total return swap, which was included in other liabilities as of December 31, 2015, was based on third party pricing services who collect prices through a variety of methods including dealer runs, indicative sheets and online posts. The Company classified the total return swap as Level 2.

Employee Benefit Plans

Employee Benefit Plans	12 Months Ended
	Dec. 31, 2016
Compensation And Retirement Disclosure [Abstract]
Employee Benefit Plans	Note 19. Employee Benefit Plans The Company maintains a contributory 401(k) plan covering all full-time employees. The Company matches 100% of an employee’s voluntary contributions up to a limit of 6% of the employee’s base salary, subject to IRS guidelines. Expense for 2016, 2015 and 2014 was $0.7 million, $0.8 million and $0.7 million, respectively.

Segment Reporting

Segment Reporting	12 Months Ended
	Dec. 31, 2016
Segment Reporting [Abstract]
Segment Reporting	Note 20. Segment Reporting Beginning in 2016, the Company has two reportable segments, Commercial Lending and Asset Management. Segment information is derived from the internal reporting system utilized by management. Revenues and expenses for segments reflect those revenue and expenses which can be specifically identified and have been assigned based on internally developed allocation methods. Results may be restated, when necessary, to reflect changes in organizational structure or allocation methodology. Any changes in allocations that may affect the reported results of any business segment will not affect the consolidated financial position or results of operations of the Company as a whole. Commercial Lending The Commercial Lending segment represents our direct lending activities which are focused on providing a range of flexible senior secured debt options to mid-sized companies with annual cash flow (EBITDA) typically between $15 million and $50 million owned by private equity investment funds and managed by established professional alternative asset managers. Asset Management The Asset Management segment represents our investment advisory activities which include credit funds managed by the Company and NewStar Capital. Credit funds managed by the Company focus on middle market loans, liquid tradeable credit and liquid loan strategies. NewStar Capital manages assets across a series of CLOs that invest primarily in broadly syndicated loans, as well as other sponsored funds and managed accounts that invest across various liquid, non-investment grade asset classes, including broadly syndicated loans and bonds. The following tables presents the statement of operations and total assets for the Company’s reportable segments: Twelve Months Ended December 31, 2016 Commercial Lending Asset Management Consolidated Total ($ in thousands) Net interest income $ 84,454 $ 4,917 $ 89,371 Provision for loan losses 27,541 — 27,541 Net interest income after provision 56,913 4,917 61,830 Noninterest income: Management fees — 11,665 11,665 Performance fees — 1,734 1,734 Other lending fees 7,141 137 7,278 Gain/(loss) on sale of loans and equipment (1,598 ) 307 (1,291 ) Other noninterest income (1) 29,298 5,576 34,874 Total noninterest income 34,841 19,419 54,260 Non-interest expense 55,177 12,262 67,439 Income before income taxes $ 36,577 $ 12,074 $ 48,651 Income tax expense 20,427 Net income $ 28,224 (1) Includes fair value adjustment on Loans held-for-sale. Twelve months ended December 31, 2015 Commercial Lending Asset Management Consolidated Total ($ in thousands) Net interest income (loss) $ 81,005 $ (206 ) $ 80,799 Provision for loan losses 18,387 — 18,387 Net interest income after provision 62,618 (206 ) 62,412 Noninterest income: Management fees — 6,661 6,661 Other lending fees 13,508 — 13,508 Gain on sale of loans and equipment 1,108 — 1,108 Other noninterest (loss) income (1) (2,982 ) 62 (2,920 ) Total noninterest income 11,634 6,723 18,357 Non-interest expense 46,873 5,055 51,928 Income before income taxes $ 27,379 $ 1,462 $ 28,841 Income tax expense 11,951 Net income $ 16,890 (1) Includes fair value adjustment on Loans held-for-sale. Twelve Months Ended December 31, 2014 Commercial Lending Asset Management Consolidated Total ($ in thousands) Net interest income (loss) $ 83,663 $ (4,156 ) $ 79,507 Provision for loan losses 27,108 — 27,108 Net interest income after provision 56,555 (4,156 ) 52,399 Noninterest income: Management fees — 1,054 1,054 Other lending fees 2,466 1 2,467 Loss on sale of loans and equipment (201 ) — (201 ) Other noninterest income 8,585 (460 ) 8,125 Total noninterest income 10,850 595 11,445 Non-interest expense 45,363 402 45,765 Income (loss) before income taxes $ 22,042 $ (3,963 ) $ 18,079 Income tax expense 7,485 Net income $ 10,594 December 31, 2016 Commercial Lending Asset Management Total ($ in thousands) Loans and leases, gross (including loans at fair value of $403,745) $ 2,915,805 $ 403,745 $ 3,319,550 Loans held-for-sale, gross 145,966 — 145,966 Investments in debt securities, available-for-sale — 119,307 119,307 Other 374,851 80,918 455,769 Total Balance Sheet Assets 3,436,622 603,970 4,040,592 Illiquid Credit funds * — 1,314,690 1,314,690 Liquid/Tradeable Credit * — 1,833,607 1,833,607 Total Assets 3,436,622 3,752,267 7,188,889 Less: Non Managed assets (1) 374,851 74,175 449,026 Total Managed Assets $ 3,061,771 $ 3,678,092 $ 6,739,863 *Assets managed by the Company for the Illiquid Credit and Liquid/Tradeable Credit Funds are not assets of the Company and are not included in the Consolidated Total Assets as reflected in the Condensed Consolidated Balance Sheet. (1) Other less unamortized discount on investment in debt securities, available-for-sale. December 31, 2015 Commercial Lending Asset Management Total ($ in thousands) Loans and leases, gross $ 3,243,580 $ — $ 3,243,580 Loans held-for-sale, gross 485,874 — 485,874 Investments in debt securities, available-for-sale — 94,177 94,177 Other 205,256 22,496 227,752 Total Balance Sheet Assets 3,934,710 116,673 4,051,383 Illiquid Credit funds * — 824,573 824,573 Liquid/Tradeable Credit * — 2,294,497 2,294,497 Total Assets 3,934,710 3,235,743 7,170,453 Less: Non Managed assets (1) 205,256 15,731 220,987 Total Managed Assets $ 3,729,454 $ 3,220,012 $ 6,949,466 *Assets managed by the Company for the Illiquid Credit and Liquid/Tradeable Credit Funds are not assets of the Company and are not included in the Consolidated Total Assets as reflected in the Condensed Consolidated Balance Sheet. (1) Other less unamortized discount on investment in debt securities, available-for-sale.

Related-Party Transactions

Related-Party Transactions	12 Months Ended
	Dec. 31, 2016
Related Party Transactions [Abstract]
Related-Party Transactions	Note 21. Related-Party Transactions 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. Prior to December 6, 2013 when the Fund called the notes of its term debt securitization, the Fund paid the Company a management fee, payable monthly in arrears, based on the carrying value of the total gross assets attributable to the applicable series of each class of shares at the end of each month. Subsequent to December 6, 2013, the Fund pays the Company a fee when cash is distributed to its investors. For 2016 and 2015, the Fund paid the Company $0.06 million and $0.05 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 2016 and 2015, the Arlington Program’s collateral management fee was $2.0 million and $2.0 million, respectively. On January 15, 2015, the Company announced the closing of 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 2016 and 2015, the Clarendon Fund’s collateral management fee was $2.0 million and $2.0 million, respectively. On November 30, 2016, the Company announced the closing of the Berkeley Fund, a $505.0 million term debt securitization. The Berkeley Fund is the fourth 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 $25.3 million. The Berkeley 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 Berkeley Fund and will not consolidate the Berkeley Fund’s operating results or statements of financial position. Pursuant to a Collateral Management Agreement dated November 29, 2016, the Company serves as collateral manager of the Berkeley 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. In October 2016, the Company repurchased 2,000,000 shares of its common stock from Capital Z Financial Services Fund II, L.P. and a related fund in a privately negotiated transaction for an aggregate purchase price of $17,860,000. The Company also repurchased 500,000 shares of its common stock in a privately negotiated transaction from a former executive officer at an aggregate purchase price of $4,465,000. The transactions were executive outside of the Company’s previously announced stock repurchase program.

Selected Quarterly Financial Da

Selected Quarterly Financial Data (Unaudited)	12 Months Ended
	Dec. 31, 2016
Quarterly Financial Information Disclosure [Abstract]
Selected Quarterly Financial Data (Unaudited)	Note 22. Selected Quarterly Financial Data (Unaudited) Unaudited quarterly information for 2016 and 2015 is shown in the following table. For the three months ended Dec. 31, 2016 Sept. 30, 2016 June 30, 2016 March 31, 2016 Dec. 31, 2015 Sept. 30, 2015 June 30, 2015 March 31, 2015 ($ in thousands) Summary Results of Operations Data: Interest income $ 64,217 $ 65,155 $ 59,392 $ 61,952 $ 60,591 $ 54,574 $ 46,871 $ 39,749 Interest expense 43,529 39,897 38,486 39,433 36,222 31,345 31,085 22,334 Net interest income 20,688 25,258 20,906 22,519 24,369 23,229 15,786 17,415 Provision for credit losses 2,635 3,570 3,623 17,713 3,667 4,534 3,208 6,978 Net interest income after provision for credit losses 18,053 21,688 17,283 4,806 20,702 18,695 12,578 10,437 Total non-interest income 19,783 10,966 4,359 19,152 3,310 3,492 7,429 4,126 Total operating expenses 19,462 18,069 12,840 17,068 16,872 13,380 11,444 10,232 Income before income taxes 18,374 14,585 8,802 6,890 7,140 8,807 8,563 4,331 Income tax expense 8,044 5,941 3,561 2,881 2,931 3,665 3,563 1,792 Net income $ 10,330 $ 8,644 $ 5,241 $ 4,009 $ 4,209 $ 5,142 $ 5,000 $ 2,539 Net income per share: Basic $ 0.23 $ 0.19 $ 0.11 $ 0.09 $ 0.09 $ 0.11 $ 0.11 $ 0.05 Diluted 0.23 0.19 0.11 0.09 0.09 0.11 0.10 0.05

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2016
Subsequent Events [Abstract]
Subsequent Events	Note 23. Subsequent Events Dividend Policy On February 14, 2017, the Company’s Board of Directors initiated a quarterly cash dividend. The first cash dividend of $0.02 per share is expected to be paid on March 17, 2017 to stockholders of record on March 2, 2017. While it is the Company’s intention to pay quarterly cash dividends for the foreseeable future, the amount, timing and frequency of any future dividend payments remains in the discretion of the Company’s Board of Directors, taking into account the Company’s financial condition and results of operation, its capital needs, market conditions and other factors that the board considers appropriate at the time. In addition, the indenture governing the Company’s senior notes imposes certain limitations on the Company’s

Summary of Significant Accoun32

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2016
Accounting Policies [Abstract]
Consolidation	Consolidation The accompanying consolidated financial statements include the accounts of the Company and its subsidiaries (collectively, “NewStar”) have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”). All material intercompany transactions have been eliminated in consolidation.
Use of Estimates	Use of Estimates The preparation of the consolidated 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. Estimates most susceptible to change in the near-term are the Company’s estimates of the allowance for credit losses, impairment of loans, recorded amounts of deferred income taxes, contingent liability and impairment of goodwill and identifiable intangible assets.
Prior Period Reclassification	Prior Period Reclassifications Certain prior period disclosure amounts have been reclassified to conform to current period presentation.
Cash and Cash Equivalents	Cash and Cash Equivalents Cash and cash equivalents include all demand deposits held in banks and certain highly liquid instruments with original maturities of 90 days or less.
Investments in Debt Securities	Investments in Debt Securities Management determines the classification of securities at the time of purchase. If management has the intent and the Company has the ability at the time of purchase to hold securities until maturity, they are classified as held-to-maturity. Investment securities held-to-maturity are stated at amortized cost. Securities to be held for indefinite periods of time, but not necessarily to be held-to-maturity or on a long-term basis, are classified as available-for-sale and carried at fair value with unrealized gains or losses reported in other comprehensive income (loss), net of applicable income taxes. The fair value of debt securities are based on quoted market prices, when available, at the reporting date. When no market is available, the Company estimates fair value using various valuation tools, including cash flow analyses that utilize financial statements, business plans, as well as qualitative factors. The carrying values of all securities are adjusted for amortization of premiums and accretion of discounts over the shorter of the period to call or maturity of the related security using a method that approximates the interest method. Realized gains or losses on the sale of securities, if any, are determined using the amortized cost of the specific securities sold. Management evaluates securities for other-than-temporary impairment (“OTTI") on a periodic basis. Factors considered in determining whether an impairment is OTTI include: (1) the length of time and the extent to which the fair value has been less than amortized cost, (2) projected future cash flows, (3) the financial condition and near-term prospects of the issuers and (4) the intent and ability of the Company to hold the investment for a period of time sufficient to allow for recovery in fair value which may be until maturity. The Company records an OTTI loss in an amount equal to the entire difference between the fair value and amortized cost if (1) the Company intends to sell an impaired investment security, (2) it is more likely than not that the Company will be required to sell the investment security before its amortized costs are recovered or (3) for debt securities, the present value of expected future cash flows is not sufficient to recover the entire amortized cost basis. If an investment security is determined to be OTTI but the Company does not intend to sell the investment security, only the credit portion of the estimated loss is recognized in earnings, with the non-credit portion of the loss recognized in other comprehensive income.
Loans Held-for-Sale	Loans Held-for-Sale Loans classified as held-for-sale consist of loans originated by the Company, intended to be sold or syndicated to third parties (including credit funds managed by the Company) or impaired loans for which a sale of the loan is expected as a result of a workout strategy. These loans are carried at the lower of aggregate cost, net of any deferred origination costs or fees, or fair value.
Loans	Loans Loans are stated at the principal amount outstanding or fair value when fair value option accounting has been elected. The Company has elected to apply fair value option accounting to loans designated to the credit funds managed by NewStar Capital. Interest income is recorded on the accrual basis in accordance with the terms of the respective loan. Loans on which the accrual of interest has been discontinued are designated as nonaccrual loans. The accrual of interest on loans is typically discontinued when principal or interest payments are past due 90 days or when, in the opinion of management, it is probable it will be unable to collect contractual principal and interest in the normal course of business. When loans are placed on nonaccrual status, all interest previously accrued but not collected is reversed against current period interest income. Income on nonaccrual loans is subsequently recognized only to the extent that cash is received and the loan’s principal balance is deemed collectible. Nonrefundable loan fees and related direct costs associated with the origination of loans are deferred and included in loans, net in the consolidated balance sheet. The net deferred fees or costs are recognized as an adjustment to interest income over the contractual life of the loans using a method which approximates the interest method or taken into income when the related loans are paid off or sold. The Company accretes any discount from purchased loans into loan fee income as a yield adjustment over the contractual life of the loan. The amortization of loan fees is discontinued on non-accrual loans.
Provision and Allowance for Credit Losses	Provision and Allowance for Credit Losses Our general allowance for credit losses covers probable losses incurred in our loan and lease amortized cost portfolio with respect to loans and leases that are not impaired and for which no specific impairment has been identified. A specific provision for credit losses is recorded with respect to loans for which it is probable that we will be unable to collect all amounts due in accordance with the contractual terms of the loan agreement. 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 within our amortized cost portfolio. 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. The Company periodically reviews its allowance for credit loss methodology to assess any necessary adjustments based upon changing economic and capital market conditions. 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. In 2015, the Company enhanced its approach for determining the expected exposure at default to more precisely reflect loan and lease exposures at December 31, 2015. 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 seven risk factors. In 2015, the scoring system of the environmental reserve risk factors was recalibrated to align with the enhancement made to the approach for determining the exposure at default. 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 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. 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. Impaired loans include all non-accrual loans, loans with partial charge-offs and loans which are Troubled Debt Restructurings (see Note 4). It is the Company’s policy during the reporting period to record a specific provision for credit losses to cover the identified impairment on a loan. Impaired loans at December 31, 2016 were in Leveraged Finance over a range of industries impacted by the current economic environment including the following: Media and Communications, Healthcare, Energy, Industrial, Other Business Services, Consumer/Retail and Building Materials. For impaired Leveraged Finance loans, the Company measured impairment based on expected cash flows utilizing relevant information provided by the borrower and consideration of other market conditions or specific factors impacting recoverability. Such amounts are discounted based on original loan terms. Loans deemed to be uncollectible are charged off and the allowance is reduced by the charged off balance of the loan. The provision for credit losses and recoveries on loans previously charged off are added to the allowance.
Deferred Financing Costs	Deferred Financing Costs Deferred financing costs represent fees and other direct incremental costs incurred in connection with borrowings and term debt securitizations. These amounts are amortized using the straight-line method into earnings as interest expense ratably over the contractual term of the facility or the estimated life of the term debt securitization.
Debt and Equity Linked Instruments	Debt and equity linked instruments We account for the subordinated notes and associated warrants issued to Franklin Square as debt and equity-linked instruments. The warrants are freestanding, indexed to the Company's common stock and are classified as equity. They were initially recorded at relative fair value, with no subsequent re-measurement. The allocation of the proceeds from the issuance of debt and warrants to Franklin Square was determined using the relative fair value method. The allocation of proceeds to the warrants created a debt discount to the subordinated debt and will be amortized over the life of the subordinated notes. The subordinated debt is presented net of the debt discount.
Property and Equipment	Property and Equipment Property and equipment are carried at cost and depreciated or amortized on a straight-line basis over the following useful lives: Leasehold improvements Shorter of estimated life or remaining lease term Furniture, fixtures and equipment 3-5 years
Goodwill and Identified Intangible Assets	Goodwill and Identified Intangible Assets Goodwill represents the excess of the consideration paid of an acquisition over the fair value of the net assets acquired. Goodwill is not subject to amortization but tested for impairment at least annually utilizing a qualitative or quantitative approach or more frequently if events or circumstances occur that indicate that impairment may have occurred. Factors that could trigger an impairment review include significant underperformance relative to historical or projected operating results, significant changes in the use of acquired assets or significant negative industry or economic trends. The Company performs its assessment for impairment of goodwill annually. As part of this evaluation, the Company makes a qualitative assessment of whether it is more likely than not that the fair value of an acquired asset is greater than its carrying amount. If the Company qualitatively concludes that it is more likely than not that the fair value of an acquired asset is greater than its carrying amount, no further testing is necessary. If, however, the Company qualitatively concludes that it is more likely than not that the fair value of an acquired asset is less than its carrying value, the Company performs a two-step quantitative impairment test to determine whether the asset is impaired. If impairment is deemed to have occurred, then an impairment loss would be recognized for the amount by which the carrying amount exceeds its fair value. Identified intangible assets are assets resulting from acquisitions that are being amortized over their estimated useful lives. The recoverability of identified intangible assets is evaluated for impairment at least annually. If impairment is deemed to have occurred, then an impairment loss would be recognized for the amount by which the carrying amount exceeds fair value.
Earnings Per Share (“EPS”)	Earnings Per Share (“EPS”) The Company utilizes the two-class method to calculate earnings per share, which requires that unvested share-based awards be treated as participating securities in the computation of EPS. Under the two-class method, earnings are allocated to common shareholders and participating securities based upon the proportion of each to the total weighted average shares available. Basic earnings per common share is computed by dividing net earnings allocated to common shareholders by the weighted-average number of common shares outstanding. Diluted earnings reflect the potential dilution that would occur if securities or other contracts to issue common stock were exercised or converted into common stock or resulted in the issuance of common stock that then shared in our earnings.
Fair Value Measurements	Fair Value Measurements Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. A fair value measurement assumes that the transaction to sell the asset or transfer the liability occurs in the principal market for the asset or liability or, in the absence of a principal market, the most advantageous market for the asset or liability. The price in the principal (or most advantageous) market used to measure the fair value of the asset or liability is not adjusted for transaction costs. An orderly transaction is a transaction that assumes exposure to the market for a period prior to the measurement date to allow for marketing activities that are usual and customary for transactions involving such assets and liabilities. Market participants are buyers and sellers in the principal market that are independent, knowledgeable, able to transact and willing to transact. ASC 820, Fair Value Measurement
Income Taxes	Income Taxes Income taxes are accounted for under the asset and liability method. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases, and operating loss and tax credit carryforwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. The Company classifies all interest and penalties on recognized tax benefits as a part of income tax expense.
Fee Income Recognition	Fee Income Recognition Origination fees and costs are deferred and amortized as yield adjustments over the contractual life of the loans and investments. In connection with the prepayment of a loan or other debt product, any remaining unamortized net deferred fees for that loan are accelerated and, depending on the terms of the loan, there may be an additional fee charged based upon the prepayment and recognized in the period of the prepayment. Syndication and structuring fees are recognized in the period the service is completed and funds received as fee income.
Asset Management Income	Asset Management Income NewStar Financial, Inc. earns asset management income for investment management services performed for managed credit funds that co-invest in middle market loans originated through its established direct lending platform and managed assets across a series of CLOs that investment primarily in broadly syndicated loans, as well as other sponsored funds and managed accounts. NewStar accrues this income when earned, on a monthly basis, and classifies it as asset management income in the consolidated statements of operations.
Stock Based Compensation	Stock Based Compensation The Company follows ASC 718, Share-Based Payment For awards granted, modified, repurchased or cancelled after January 1, 2006, the Company estimates the fair value of stock-based awards using the Black-Scholes valuation model, which requires the input of subjective assumptions, including expected term and expected price volatility. Changes in these assumptions can materially affect the calculated fair value of stock-based compensation and the related expense to be recognized. Further, for awards that contain performance measures and conditions, the Company makes an assessment, based on management’s judgment, of the probability of these conditions being satisfied, which affects the timing and the amount of expense to be recognized. If the Company’s judgment as to whether these conditions are probable of occurrence are not appropriate, the financial statements could be materially affected.
Gain (loss) on Sale of Loans	Gain (loss) on sale of loans All loans sold to date have been sold without recourse. When loans are sold, a gain or loss is recognized to the extent that the sales proceeds net of deferred fees and costs exceed or are less than the carrying value of the loans. Gains and losses are determined using the specific identification method.
Equity and Cost Method Investments	Equity and Cost Method Investments The Company may acquire a portion of the equity in borrowers. In cases where the Company has the ability to exercise significant influence over the borrower, it accounts for its equity interest under the equity method of accounting. Under the equity method of accounting, the Company recognizes its proportional share of the borrower’s GAAP net income in its results of operations. In cases where the equity of the underlying company has no value, and the borrower incurs losses, the Company will apply its proportional share of the GAAP loss against the principal of the outstanding loan to the borrower. In circumstances where we do not have substantial influence over the company, we account for the equity interest under the cost method of accounting. The equity interest is recorded at its historical cost within other assets on our consolidated balance sheet. The Company evaluates its equity and cost method investments for impairment by assessing whether the fair value of the equity interest has declined below its carrying value for a period we consider other-than-temporary. If it determines that a decline in fair value below our carrying value is other-than-temporary, an impairment is recognized to reduce the carrying value of the investment to its fair value.
Derivative Instruments and Hedging Activities	Derivative Instruments and Hedging Activities The Company accounts for derivatives and hedging activities on the consolidated balance sheet in either other assets or other liabilities at their respective fair values. On the date a derivative contract is entered into, the Company designates the derivative as either (1) a hedge of a forecasted transaction or the variability of cash flows to be received or paid related to a recognized asset or liability (cash flow hedge) or as (2) a derivative trading instrument. For all hedging relationships the Company formally documents the hedging relationship and its risk-management objective and strategy for undertaking the hedge, the hedging instrument, the item, the nature of the risk being hedged, how the hedging instrument’s effectiveness in offsetting the hedged risk will be assessed, and a description of the method of measuring ineffectiveness. This process includes linking all derivatives that are designated as hedges to specific assets and liabilities on the balance sheet or to forecasted transactions. The Company also formally assesses, both at the hedge’s inception and on an ongoing basis, whether the derivatives that are used in hedging transactions are highly effective in offsetting changes in cash flows of hedged items. Changes in the fair value of a derivative that is highly effective and that is designated and qualifies as a cash-flow hedge are recorded in other comprehensive income to the extent that the derivative is effective as a hedge, until earnings are affected by the variability in cash flows of the designated hedged item. The ineffective portion of the change in fair value of a derivative instrument that qualifies as a cash-flow hedge is reported in earnings. The Company discontinues hedge accounting prospectively when it is determined that the derivative is no longer effective in offsetting changes in the cash flows of the hedged item, the derivative expires or is sold, terminated, or exercised, the derivative is de-designated as a hedging instrument because it is unlikely that a forecasted transaction will occur, or management determines that designation of the derivative as a hedging instrument is no longer appropriate. In all situations in which hedge accounting is discontinued or was never applied, the Company continues to carry the derivative at its fair value on the balance sheet and recognizes any subsequent changes in its fair value in earnings. When hedge accounting is discontinued because it is probable that a forecasted transaction will not occur by the date (or within the time period) originally specified or within an additional two-month period of time thereafter, the Company recognizes immediately in earnings, gains and losses that were accumulated in other comprehensive income. Gains and losses on derivatives not designated as hedges, including any cash payments made or received, are reported as gain (loss) on derivatives in the accompanying consolidated statements of operations.
Total Return Swap	Total Return Swap The Company was party to a total return swap (“TRS”) through March 31, 2016. A TRS is a contract in which one party agrees to make periodic payments to another party based on the change in the market value of the assets underlying the TRS, in return for periodic payments based on a fixed or variable interest rate. The TRS effectively added leverage to our portfolio by providing investment exposure to underlying loans without owning or taking physical custody, in return for an interest-type payment to Citi. The TRS was recorded at fair value as an asset or liability with changes in fair value recorded as unrealized appreciation or depreciation. Realized gains or losses are recognized at the maturity of the contract.
Comprehensive Income (Loss), net of tax	Comprehensive Income (Loss), net of tax The Company records the change in fair value of cash flow hedge derivatives and unrealized gains and losses on available-for-sale securities in other comprehensive income (loss), net of tax. Gains and losses on available-for-sale securities are reclassified to net income as the gains and losses are realized upon sale of the securities. Other than temporary impairment charges are reclassified to earnings at the time of the charge.
Recently Adopted Accounting Standards	Recently Adopted 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 thousands) December 31, 2015 As previously reported under GAAP applicable at the time Deferred financing costs, net 40,733 Credit facilities 843,896 Term debt securitizations, net 1,837,889 Senior notes, net 379,232 Subordinated notes, net 215,018 Repurchase agreements 96,789 As currently reported under ASU 2015-03 Deferred financing costs, net — Credit facilities, net 832,686 Term debt securitizations, net 1,821,519 Senior notes, net 372,153 Subordinated notes, net 209,509 Repurchase agreements, net 96,224 In August 2014, the FASB issued ASU 2014-15, Presentation of Financial Statements- Going Concern (Subtopic 205-40)
Recently Issued Accounting Standards not yet required to be adopted as of December 31, 2015	Recently Issued Accounting Standards not yet required to be adopted as of December 31, 2016 In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606). Revenue from Contracts with Customers (Topic 606): Deferral of the Effective Date Revenue from Contracts with Customers (Topic 606): Principal versus Agent Considerations (Reporting Revenue Gross versus Net), 2016-08 ASU 2014-09 . In November 2015, the FASB issued ASU 2015-17, Income Taxes (Topic 740). ASU 2015-17 is effective for annual periods and interim periods within that reporting period beginning after December 15, 2016. In January 2016, the FASB issued ASU 2016-01, Financial Instruments – Recognition and Measurement of Financial Assets and Financial Liabilities (Topic 825-10) In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) . ASU 2016-02 amends existing guidance related to the accounting for leases. These amendments, among other things, require lessees to account for most leases on the balance sheet while recognizing expense on the income statement in a manner similar to existing guidance. For lessors the guidance modifies the classification criteria and the accounting for sales-type and direct finance leases. ASU 2016-02 is effective for annual periods and interim periods within that reporting period beginning after December 15, 2018, with early adoption permitted. ASU 2016-02 mandates a modified retrospective transition method for all entities. The Company has performed a preliminary analysis of ASU 2016-02. The Company typically categorizes its leases as either office space leases or as other leases. The adoption of ASU 2016-02 is expected to have an impact on the balance sheet of the Company, as both the value of the leased office space as well as the current value of future lease liabilities will be recorded. The Company does not expect there to be a material impact to financial position for all other leases due to the limited volume and size of transactions; however the evaluation has yet to be performed. The Company plans to adopt this standard effective January 1, 2019. In March 2016, the FASB issued ASU 2016-07, Simplifying the Transition to the Equity Method of Accounting (Topic 323) In March 2016, the FASB issued ASU 2016-09, Improvements to Employee Share-Based Payment Accounting (Topic 718). In June 2016, the FASB issued ASU 2016-13, Financial Instruments-Credit Losses (Topic 326) ASU 2016-13 requires enhanced disclosures, including qualitative and quantitative requirements, to help understand significant estimates and judgments used in estimating credit losses, as well as provide additional information about the amounts recorded in the financial statements. In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows (Topic 230). In October 2016, the FASB issued ASU 2016-17, Consolidation (Topic 810), Interest Held Through Related Parties That Are Under Common Control In November 2016, the FASB issued ASU 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash. is effective for annual periods and interim periods within that reporting period beginning after D In January 2017, the FASB issued ASU 2017-04 Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment. 2017-04 is effective for annual periods and interim periods within that reporting period beginning after December 15, 2019, with early adoption permitted.

Summary of Significant Accoun33

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2016
Accounting Policies [Abstract]
Property and Equipment are Carried at Cost and Depreciated or Amortized on a Straight-line Basis	Property and equipment are carried at cost and depreciated or amortized on a straight-line basis over the following useful lives: Leasehold improvements Shorter of estimated life or remaining lease term Furniture, fixtures and equipment 3-5 years
ASU 2015-03 Impact on Condensed Consolidated Balance Sheet	The adoption of ASU 2015-03 had the following impact on the Condensed Consolidated Balance Sheet as of December 31, 2015. (in thousands) December 31, 2015 As previously reported under GAAP applicable at the time Deferred financing costs, net 40,733 Credit facilities 843,896 Term debt securitizations, net 1,837,889 Senior notes, net 379,232 Subordinated notes, net 215,018 Repurchase agreements 96,789 As currently reported under ASU 2015-03 Deferred financing costs, net — Credit facilities, net 832,686 Term debt securitizations, net 1,821,519 Senior notes, net 372,153 Subordinated notes, net 209,509 Repurchase agreements, net 96,224

Loans Held-for-Sale, Loans an34

Loans Held-for-Sale, Loans and Leases, and Allowance for Credit Losses (Tables)	12 Months Ended
	Dec. 31, 2016
Receivables [Abstract]
Loans Held-for-Sale	As of December 31, 2016 and 2015, loans held-for-sale consisted of the following: December 31, 2016 December 31, 2015 ($ in thousands) Leveraged Finance $ 145,966 $ 485,874 Gross loans held-for-sale 145,966 485,874 Deferred loan fees, net (1,906 ) (7,089 ) Total loans, net $ 144,060 $ 478,785
Summary of Loans and Leases	As of December 31, 2016 and 2015, loans and leases consisted of the following: December 31, 2016 2015 ($ in thousands) Leveraged Finance (1) $ 3,308,926 $ 2,627,314 Business Credit — 342,281 Real Estate 10,624 100,732 Equipment Finance — 173,253 Gross loans and leases 3,319,550 3,243,580 Deferred loan fees, net (29,423 ) (51,249 ) Allowance for loan and lease losses (50,936 ) (58,259 ) Total loans and leases, net $ 3,239,191 $ 3,134,072 (1) Includes loans at fair value of $403.7 and $0, respectively.
Summary of Impaired Loans	A summary of impaired loans is as follows: Investment, Net of Charge-offs Investment, Net of Unamortized Discount/Premium Unpaid Principal ($ in thousands) December 31, 2016 Leveraged Finance $ 133,413 $ 126,839 $ 154,879 Real Estate — — — Total $ 133,413 $ 126,839 $ 154,879 December 31, 2015 Leveraged Finance $ 157,446 $ 150,692 $ 188,453 Business Credit — — — Real Estate 34,941 34,915 38,286 Equipment Finance 772 709 772 Total $ 193,159 $ 186,316 $ 227,511 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) December 31, 2016 Leveraged Finance $ 73,499 $ 68,924 $ 59,914 $ 57,915 Total $ 73,499 $ 68,924 $ 59,914 $ 57,915 December 31, 2015 Leveraged Finance $ 113,397 $ 106,762 $ 44,049 $ 43,930 Real Estate 7,705 7,705 27,236 27,210 Equipment Finance — — 772 709 Total $ 121,102 $ 114,467 $ 72,057 $ 71,849
Evaluation Summary of Amortized Cost Portfolio and Allowance for Loan and Lease Losses by Impairment	Below is a summary of the Company’s evaluation of its amortized cost portfolio and allowance for loan and lease losses by impairment methodology: Leveraged Finance Real Estate December 31, 2016 Investment Allowance Investment Allowance ($ in thousands) Collectively evaluated (1)(2) $ 2,771,768 $ 31,073 $ 10,624 $ 92 Individually evaluated (3) 133,413 19,771 — — Total $ 2,905,181 $ 50,844 $ 10,624 $ 92 Leveraged Finance Business Credit Real Estate Equipment Finance December 31, 2015 Investment Allowance Investment Allowance Investment Allowance Investment Allowance ($ in thousands) Collectively evaluated (1) $ 2,469,868 $ 27,874 $ 342,281 $ 1,991 $ 65,791 $ 350 $ 172,481 $ 1,291 Individually evaluated (3) 157,446 26,447 — — 34,941 306 772 — Total $ 2,627,314 $ 54,321 $ 342,281 $ 1,991 $ 100,732 $ 656 $ 173,253 $ 1,291 (1) Represents loans and leases collectively evaluated for impairment in accordance with ASC 450-20, Loss Contingencies, and pursuant to amendments by ASU 2010-20 regarding allowance for unimpaired loans and leases. (2) Excludes $403.7 million Leveraged Finance loans which the Company elected to record at fair value. (3) Represents loans individually evaluated for impairment in accordance with ASU 310-10, Receivables,
Summary of Company's Net Investment in Nonaccrual Loans	Below is a summary of the Company’s net investment in nonaccrual loans: Recorded Investment in Nonaccrual Loans December 31, 2016 December 31, 2015 ($ in thousands) Leveraged Finance $ 99,233 $ 103,563 Real Estate — 7,705 Total $ 99,233 $ 111,268 Less: Deferred fees (6,485 ) (6,616 ) Add back: Interest Receivable 116 34 Total $ 92,864 $ 104,686
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 December 31, 2016 and 2015 is provided below: ($ in thousands) Group I Group II December 31, 2016 $ 114,803 $ 77,061 December 31, 2015 $ 183,573 $ 162,986 Note: A loan may be included in both restructuring groups, but not repeated 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 Year Ended December 31, 2016 Pre- Modification Outstanding Recorded Investment Post- Modification Outstanding Recorded Investment Investment in TDR Subsequently Defaulted ($ in thousands) Leveraged Finance $ 49,536 $ 27,216 $ 18,916 Real Estate (1) — — 4,483 Total $ 49,536 $ 27,216 $ 23,399 (1) Amount reflects charge-off on an impaired Real Estate TDR that was taken prior to transfer to held-for-sale. For the Year Ended December 31, 2015 Pre- Modification Outstanding Recorded Investment Post- Modification Outstanding Recorded Investment Investment in TDR Subsequently Defaulted ($ in thousands) Leveraged Finance $ 13,650 $ 13,650 $ 29,339 Business Credit — — — Real Estate 27,704 27,704 — Equipment Finance 922 922 — Total $ 42,276 $ 42,276 $ 29,339
Breakdown of TDRs	The following sets forth a breakdown of TDRs at December 31, 2016 and 2015: As of December 31, 2016 ($ in thousands) Accrual Status Impaired Specific For the year Loan Type Accruing Nonaccrual Balance Allowance Charged-off Leveraged Finance $ 24,367 $ 90,436 $ 114,803 $ 15,939 $ 26,684 Total $ 24,367 $ 90,436 $ 114,803 $ 15,939 $ 26,684 As of December 31, 2015 ($ in thousands) Accrual Status Impaired Specific For the year Loan Type Accruing Nonaccrual Balance Allowance Charged-off Leveraged Finance $ 53,883 $ 93,977 $ 147,860 $ 24,958 $ 4,000 Real Estate 27,236 7,705 34,941 — — Equipment Finance 772 — 772 — — Total $ 81,891 $ 101,682 $ 183,573 $ 24,958 $ 4,000
Aged Analysis of Past Due Receivables	An aged analysis of the Company’s past due receivables is as follows: 60-89 Days Past Due Greater than 90 Days Total Past Due Current Total Loans and Leases Investment in > 60 Days & Accruing December 31, 2016 ($ in thousands) Leveraged Finance $ — $ 21,135 $ 21,135 $ 3,287,791 $ 3,308,926 $ — Real Estate — — $ — 10,624 10,624 — Total $ — $ 21,135 $ 21,135 $ 3,298,415 $ 3,319,550 $ — December 31, 2015 Leveraged Finance $ — $ 27,165 $ 27,165 $ 2,600,149 $ 2,627,314 $ 8,530 Business Credit — — — 342,281 342,281 — Real Estate — — — 100,732 100,732 — Equipment Finance — — — 173,253 173,253 — Total $ — $ 27,165 $ 27,165 $ 3,216,415 $ 3,243,580 $ 8,530
Summary Activity in the Allowance for Credit Losses	A summary of the activity in the allowance for credit losses is as follows: Year Ended December 31, 2016 Leveraged Finance Business Credit Real Estate Equipment Finance Total ($ in thousands) Balance, beginning of period $ 54,788 $ 1,991 $ 656 $ 1,291 $ 58,726 Provision for credit losses—general 3,204 (172 ) 1,010 (1,291 ) 2,751 Provision for credit losses—specific 20,483 — 4,307 — 24,790 Reversal due to sale of Business Credit — (1,819 ) — — (1,819 ) Loans charged off, net of recoveries (27,159 ) — (5,881 ) — (33,040 ) Balance, end of period $ 51,316 $ — $ 92 $ — $ 51,408 Balance, end of period—specific $ 19,771 $ — $ — $ — $ 19,771 Balance, end of period—general $ 31,545 $ — $ 92 $ — $ 31,637 Average balance of impaired loans $ 176,286 $ — $ 24,595 $ — $ 200,881 Average net book value of impaired leases — — — 542 542 Interest recognized from impaired loans and leases $ 9,679 $ — $ 1,220 $ 12 $ 10,911 Loans and leases (1) Loans individually evaluated with specific allowance $ 73,499 $ — $ — $ — $ 73,499 Loans individually evaluated with no specific allowance 59,914 — — — 59,914 Loans and leases collectively evaluated without specific allowance 2,771,768 — 10,624 — 2,782,392 Total loans and leases $ 2,905,181 $ — $ 10,624 $ — $ 2,915,805 (1) Excludes $403.7 million of Leveraged Finance loans which the Company elected to record at fair value. Year Ended December 31, 2015 Leveraged Finance Business Credit Real Estate Equipment Finance Total ($ in thousands) Balance, beginning of period $ 41,480 $ 1,334 $ 257 $ 622 $ 43,693 Provision for credit losses—general 7,473 657 93 669 8,892 Provision for credit losses—specific 9,043 — 306 146 9,495 Loans charged off, net of recoveries (3,208 ) — — (146 ) (3,354 ) Balance, end of period $ 54,788 $ 1,991 $ 656 $ 1,291 $ 58,726 Balance, end of period—specific $ 26,447 $ — $ 306 $ — $ 26,753 Balance, end of period—general $ 28,341 $ 1,991 $ 350 $ 1,291 $ 31,973 Average balance of impaired loans $ 172,578 $ — $ 36,106 $ — $ 208,684 Average net book value of impaired leases — — — 863 863 Interest recognized from impaired loans and leases $ 11,370 $ — $ 1,584 $ 36 $ 12,990 Loans and leases Loans individually evaluated with specific allowance $ 113,397 $ — $ 7,705 $ — $ 121,102 Loans individually evaluated with no specific allowance 44,049 — 27,236 772 72,057 Loans and leases collectively evaluated without specific allowance 2,469,868 342,281 65,791 172,481 3,050,421 Total loans and leases $ 2,627,314 $ 342,281 $ 100,732 $ 173,253 $ 3,243,580

Restricted Cash (Tables)

Restricted Cash (Tables)	12 Months Ended
	Dec. 31, 2016
Cash And Cash Equivalents [Abstract]
Summary of Restricted Cash	Restricted cash as of December 31, 2016 and 2015 was as follows: December 31, 2016 2015 ($ in thousands) Collections on loans pledged to credit facilities $ 43,822 $ 67,892 Principal and interest collections on loans held in trust and prefunding amounts 216,501 85,823 Customer escrow accounts 2,320 277 Total $ 262,643 $ 153,992

Investments in Debt Securitie36

Investments in Debt Securities, Available-for-Sale (Tables)	12 Months Ended
	Dec. 31, 2016
Investments Debt And Equity Securities [Abstract]
Summary of Amortized Cost of Investments in Debt Securities	Amortized cost of investments in debt securities as of December 31, 2016 and 2015 was as follows: December 31, 2016 2015 ($ in thousands) Investments in debt securities—gross $ 132,180 $ 111,020 Unamortized discount (6,743 ) (6,765 ) Investments in debt securities—amortized cost $ 125,437 $ 104,255
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 December 31, 2016 and 2015 were as follows: Amortized cost Gross unrealized holding gains Gross unrealized holding losses Fair value ($ in thousands) December 31, 2016 Collateralized loan obligations $ 125,437 $ 286 $ (6,416 ) $ 119,307 $ 125,437 $ 286 $ (6,416 ) $ 119,307 Amortized cost Gross unrealized holding gains Gross unrealized holding losses Fair value ($ in thousands) December 31, 2015 Collateralized loan obligations $ 104,255 $ — $ (10,078 ) $ 94,177 $ 104,255 $ — $ (10,078 ) $ 94,177
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 December 31, 2016 and 2015: December 31, 2016 Less than 12 Months Greater than or Equal to 12 Months Total ($ in thousands) Number of positions 3 17 20 Fair value $ 4,811 $ 68,737 $ 73,548 Amortized cost 4,885 75,079 79,964 Unrealized loss $ (74 ) $ (6,342 ) $ (6,416 ) December 31, 2015 Less than 12 Months Greater than or Equal to 12 Months Total ($ in thousands) Number of positions 20 3 23 Fair value $ 86,245 $ 7,932 $ 94,177 Amortized cost 95,624 8,631 104,255 Unrealized loss $ (9,379 ) $ (699 ) $ (10,078 )
Summary of Maturities of Debt Securities	Maturities of debt securities classified as available-for-sale were as follows at December 31, 2016 and 2015: December 31, 2016 December 31, 2015 Amortized cost Fair value Amortized cost Fair value ($ in thousands) Available-for-sale: Due one year or less $ 91 $ 20 $ — $ — Due after one year through five years — — — — Due after five years through ten years 53,177 48,404 34,017 30,470 Due after ten years through fifteen years 72,169 70,883 70,238 63,707 Total $ 125,437 $ 119,307 $ 104,255 $ 94,177

Fixed Assets (Tables)

Fixed Assets (Tables)	12 Months Ended
	Dec. 31, 2016
Property Plant And Equipment [Abstract]
Summary of Fixed Assets	December 31, 2016 2015 ($ in thousands) Leasehold improvements $ 1,954 $ 2,271 Non-depreciable assets 20 20 Furniture and equipment 651 941 Software 390 492 3,015 3,724 Less: Accumulated depreciation and amortization 2,741 3,086 $ 274 $ 638

Goodwill and Identified Intan38

Goodwill and Identified Intangibles Assets (Tables)	12 Months Ended
	Dec. 31, 2016
Goodwill And Intangible Assets Disclosure [Abstract]
Schedule of Carrying Value of Goodwill	The following table presents the carrying value of goodwill at the reporting unit level: December 31, 2016 2015 ($ in thousands) Goodwill $ 17,884 $ 17,884 Total $ 17,884 $ 17,884

Borrowings (Tables)

Borrowings (Tables)	12 Months Ended
	Dec. 31, 2016
Debt Instrument [Line Items]
Summary of Debt Maturities	The contractual obligations under credit facilities and term debt as of December 31, 2016 were as follows: Credit facilities Term debt(1) Senior notes Subordinated notes Total ($ in thousands) 2017 $ — $ — $ — $ — $ — 2018 — — — — — 2019 — — — — — 2020 454,300 — 380,000 — 834,300 2021 — — — — — Thereafter — 2,215,840 — 300,000 2,515,840 Total $ 454,300 $ 2,215,840 $ 380,000 $ 300,000 $ 3,350,140 (1) Maturities for term debt are based on contractual maturity dates. Actual maturities may occur earlier.
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 December 31, 2016 Interest rate Legal final maturity ($ in thousands) 2012-2 CLO Class A $ 190,700 $ 144,053 Libor+1.90% January Class B 26,000 26,000 Libor+3.25% January 20, 2023 Class C 35,200 35,200 Libor+4.25% January 20, 2023 Class D 11,400 11,400 Libor+6.25% January 20, 2023 Class E 16,300 16,300 Libor+6.75% January 20, 2023 $ 279,600 $ 232,953
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 December 31, 2016 Interest rate Legal final maturity ($ in thousands) 2013-1 CLO Class A-T $ 202,600 $ 188,349 Libor+1.65% September Class A-R 35,000 32,538 (1) September 20, 2023 Class B 38,000 38,000 Libor+2.30% September 20, 2023 Class C 36,000 36,000 Libor+3.80% September 20, 2023 Class D 21,000 21,000 Libor+4.55% September 20, 2023 Class E 6,000 6,000 Libor+5.30% September 20, 2023 $ 338,600 $ 321,887 (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 the interest rate payable pari passu with the Class A-T Notes exceed the Class A-R Waterfall Rate Cap.
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 December 31, 2016 Interest rate Legal final maturity ($ in thousands) 2014-1 CLO Class A $ 202,500 $ 202,500 Libor+1.80% April Class B-1 20,000 20,000 Libor+2.60% April 20, 2025 Class B-2 13,250 13,250 (1) April 20, 2025 Class C 30,250 30,250 Libor+3.60% April 20, 2025 Class D 23,500 23,500 Libor+4.75% April 20, 2025 $ 289,500 $ 289,500 (1) Class B-2 Notes accrue interest at a fixed rate of 4.902%.
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 December 31, 2016 Interest rate Legal final maturity ($ in thousands) 2015-1 CLO Class A-1 $ 253,500 $ 253,500 Libor+1.80% January 20, 2027 Class A-2 35,000 35,000 (1) January 20, 2027 Class B 50,000 50,000 Libor+2.80% January 20, 2027 Class C 38,500 38,500 Libor+3.85% January 20, 2027 Class D 33,250 33,250 Libor+5.50% January 20, 2027 $ 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.
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 December 31, 2016 Interest rate Legal final maturity ($ in thousands) 2015-2 CLO Class A-1 $ 205,000 $ 205,000 Libor+2.00% August 25, 2027 Class A-2 23,000 23,000 (1) August 25, 2027 Class B 40,000 40,000 Libor+2.90% August 25, 2027 Class C 26,250 26,250 Libor+3.95% August 25, 2027 Class D 28,500 28,500 Libor+5.25% August 25, 2027 Class E 5,000 5,000 Libor+7.50% August 25, 2027 $ 327,750 $ 327,750 (1) Class A-2 Notes accrue interest at a fixed rate of 3.461%.
2016-1 CLO [Member]
Debt Instrument [Line Items]
Summary of Borrowings	The following table sets forth selected information with respect to the 2016-1 CLO: Notes originally issued Outstanding balance December 31, 2016 Interest rate Legal final maturity ($ in thousands) 2016-1 CLO Class A-1 $ 176,500 $ 176,500 Libor+2.30% February 25, 2028 Class A-2 20,000 20,000 (1) February 25, 2028 Class B 36,750 36,750 Libor+3.75% February 25, 2028 Class C 22,500 22,500 Libor+5.40% February 25, 2028 Class D 7,500 7,500 Libor+5.50% February 25, 2028 $ 263,250 $ 263,250 (1) Class A-2 Notes accrue interest at a fixed rate of 3.44%.
Arch Street CLO [Member]
Debt Instrument [Line Items]
Summary of Borrowings	Notes originally issued Outstanding balance December 31, 2016 Interest rate Legal final maturity ($ in thousands) Arch Street CLO Class X $ 2,500 $ 2,500 Libor+1.25% October 20, 2028 Class A 256,000 256,000 Libor+1.65% October 20, 2028 Class B 48,000 48,000 Libor+2.24% October 20, 2028 Class C 20,000 20,000 Libor+3.00% October 20, 2028 Class D 22,750 22,750 Libor+4.20% October 20, 2028 Class E 21,000 21,000 Libor+6.95% October 20, 2028 $ 370,250 $ 370,250

Commitments (Tables)

Commitments (Tables)	12 Months Ended
	Dec. 31, 2016
Commitments And Contingencies Disclosure [Abstract]
Summary of Future Minimum Lease Payments	Future minimum lease payments under non-cancelable operating leases as of December 31, 2016 were as follows: ($ in thousands) 2017 $ 1,567 2018 1,409 2019 1,306 2020 576 2021 — Thereafter —

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2016
Equity [Abstract]
Schedule of Authorized Capital	As of December 31, 2016 and 2015, the Company’s authorized capital consists of preferred and common stock and the following was authorized and outstanding: December 31, 2016 December 31, 2015 Shares authorized Shares outstanding Shares authorized Shares outstanding (In thousands) Preferred stock 5,000 — 5,000 — Common stock 145,000 42,820 145,000 46,527
Schedule of Restricted Stock Activity	Restricted stock activity for 2016 and 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 (219,802 ) (2,710 ) Forfeited (6,060 ) (74 ) Non-vested as of December 31, 2015 496,704 5,629 Granted 597,923 3,835 Vested (250,846 ) (2,876 ) Forfeited (2,947 ) (24 ) Non-vested as of December 31, 2016 840,834 6,564
Schedule of Stock Option Activity	Stock option activity for 2016 and 2015 was as follows: Options Weighted average exercise price Weighted average remaining contractual life (in years) Outstanding as of December 31, 2014 4,628,439 5.00 2 Granted — — 0 Exercised (2,092,092 ) 3.22 0 Forfeited (22,815 ) 14.02 1 Outstanding as of December 31, 2015 2,513,532 5.75 1 Granted — — 0 Exercised (1,761,926 ) 3.04 0 Forfeited (329,914 ) 16.37 0 Outstanding as of December 31, 2016 421,692 8.72 1 Vested and exercisable as of December 31, 2016 421,692 8.72 1

Earnings Per Share (Tables)

Earnings Per Share (Tables)	12 Months Ended
	Dec. 31, 2016
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 the 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 earnings per share for the periods ended December 31, 2016, 2015 and 2014 are as follows: December 31, 2016 2015 2014 (In thousands) Numerator: Net income to common shareholders $ 28,224 $ 16,890 $ 10,594 Net income allocated to participating securities - basic and diluted 490 182 72 Net income allocated to common shareholders - basic and diluted $ 27,734 $ 16,708 $ 10,522 Denominator: Denominator for basic earnings per common share 45,592 45,631 48,267 Denominator for diluted earnings per common share: Potentially dilutive securities—options 26 1,904 3,229 Potentially dilutive securities—restricted stock — — — Potentially dilutive securities—warrants — — 79 Total weighted average diluted shares 45,618 47,535 51,575 Earnings per common share Basic $ 0.61 $ 0.37 $ 0.22 Diluted 0.61 0.35 0.21

Variable Interest Entity (Table

Variable Interest Entity (Tables)	12 Months Ended
	Dec. 31, 2016
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 December 31, 2016 and 2015: December 31, 2016 December 31, 2015 ($ in thousands) Unconsolidated VIE assets $ 912,900 $ 483,581 Unconsolidated VIE liabilities 810,030 362,383 Equity interest included on the Consolidated Balance Sheet 50,386 23,910 Maximum risk of loss (1) 50,794 24,327 (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 Of44

Financial Instruments with Off-Balance Sheet Risk (Tables)	12 Months Ended
	Dec. 31, 2016
Commitments And Contingencies Disclosure [Abstract]
Financial Instruments with Off-Balance Sheet Risk	Financial instruments with off-balance sheet risk are summarized as follows: December 31, 2016 2015 ($ in thousands) Unused lines of credit $ 326,051 $ 601,805 Standby letters of credit 8,239 8,696

Total Return Swap (Tables)

Total Return Swap (Tables)	12 Months Ended
	Dec. 31, 2016
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Schedule of Receivable and Realized Loss on Total Return Swap	At December 31, 2015, the receivable and realized loss on the total return swap on the consolidated balance sheet and consolidated statements of operations consisted of the following: Net Receivable Net Realized Gains/(Losses) ($ in thousands) Interest income from TRS portfolio $ — $ 8,667 TRS interest expense — 2,652 Realized loss on TRS (5,816 ) (4,822 ) TRS receivable 1,377 —

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Summary of Income Tax Expense	The components of income tax expense are as follows: December 31, 2016 2015 2014 ($ in thousands) Current tax expense: Federal $ 25,300 $ 8,613 $ 3,245 State 4,475 4,006 1,667 Total current 29,775 12,619 4,912 Deferred tax expense (benefit): Federal (9,883 ) 426 2,440 State 535 (1,094 ) 133 Total deferred (9,348 ) (668 ) 2,573 Income tax expense $ 20,427 $ 11,951 $ 7,485
Summary of Effective Tax Rate	The effective tax rate differed from the statutory federal corporate rate of 35% as follows: December 31, 2016 2015 2014 ($ in thousands) Federal statutory rate $ 17,028 $ 10,094 $ 6,328 State income taxes, net of federal tax benefit 3,256 1,893 1,170 Other 143 (36 ) (13 ) $ 20,427 $ 11,951 $ 7,485
Summary of Components of Deferred Tax Assets and Liabilities	As of December 31, 2016 and 2015, components of deferred tax assets and liabilities are as follows: December 31, 2016 2015 ($ in thousands) Deferred tax asset: Allowance for credit losses $ 23,353 $ 29,105 Capitalized startup costs — 103 Other 4,243 1,483 Securities fair value adjustments 2,491 4,166 Equity compensation 2,505 6,950 Accrued bonus and severance 6,886 6,728 Income from non-performing assets 4,329 4,325 Equity positions 1,272 — Other real estate owned 73 — Intangible Assets 293 196 Gross deferred tax asset 45,445 53,056 Deferred tax liability: Prepaid expenses 1,091 1,226 Mark-to-market loans 294 420 Deferred loan costs 1,488 1,971 Cancellation of term debt income 1,185 1,778 Equity positions — 2,498 Equipment leasing — 11,113 Goodwill 580 917 Gross deferred tax liability 4,638 19,923 Net deferred tax asset $ 40,807 $ 33,133

Fair Value (Tables)

Fair Value (Tables)	12 Months Ended
	Dec. 31, 2016
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 December 31, 2016, 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: Assets: Investments in debt securities, available-for-sale $ — $ — $ 119,307 $ 119,307 Loans — 403,745 — 403,745 Total assets recorded at fair value on a recurring basis $ — $ 403,745 $ 119,307 $ 523,052 Liabilities: Contingent liability $ — $ — $ 1,350 $ 1,350 Total liabilities recorded at fair value on a recurring basis $ — $ — $ 1,350 $ 1,350 Nonrecurring Basis: Assets: Loans, held-for-sale $ — $ 69,875 $ 75,531 $ 145,406 Other real estate owned/repossessed assets — — 15,750 15,750 Total assets recorded at fair value on a nonrecurring basis $ — $ 69,875 $ 91,281 $ 161,156 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: Assets: Investments in debt securities, available-for-sale $ — $ — $ 94,177 $ 94,177 Total assets recorded at fair value on a recurring basis $ — $ — $ 94,177 $ 94,177 Liabilities: TRS $ — $ 4,439 $ — $ 4,439 Total liabilities recorded at fair value on a recurring basis $ — $ 4,439 $ — $ 4,439 Nonrecurring Basis: Assets: Collateral dependent impaired loans $ — $ — $ 27,473 $ 27,473 Loans, held-for-sale — 140,151 — 140,151 Other real estate owned/repossessed assets — — 250 250 Total assets recorded at fair value on a nonrecurring basis $ — $ 140,151 $ 27,723 $ 167,874
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 December 31, 2016. Fair value Valuation Techniques Unobservable Input Range ($ in thousands) Financial assets: Investments in debt securities, available-for-sale $ 119,307 Broker quotes Pricing assumptions such as prepayment rates, interest rates, loss assumptions, cash flow projections, and comparisons to similar financial instruments Loans and leases, net 75,531 Market comparables Cost to sell 3% - 7% Valuation model Marketability discount 5% - 30% Other real estate owned/repossessed assets 15,750 Appraisal Cost to sell 3% - 7% Total Assets: $ 210,588 Financial liabilities: Contingent liability $ 1,350 Valuation model PoD/LGD Total Liabilities: $ 1,350 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, 2015. Fair value Valuation Techniques Unobservable Input Range ($ in thousands) Financial assets: Investments in debt securities, available-for-sale $ 94,177 Broker quotes Pricing assumptions such as prepayment rates, interest rates, loss assumptions, cash flow projections, and comparisons to similar financial instruments Loans and leases, net 27,473 Market comparables Cost to sell 3% - 7% 250 Valuation model Marketability discount 5% - 30% Total: $ 121,900
Reconciliation of Financial Instruments Measured on Recurring Basis and Classified as Level 3 Inputs	For the year ended December 31, 2016: Investments in Debt Securities, Available- for-sale Contingent Liability ($ in thousands) Balance as of December 31, 2015 $ 94,177 $ — Total gains or losses (realized/unrealized) Included in earnings 875 — Included in other comprehensive income 3,942 — Initial recognition 1,350 Purchases 26,313 — Issuances — — Settlements (6,000 ) — Balance as of December 31, 2016 $ 119,307 $ 1,350 For the year ended December 31, 2015: Investments Debt Securities, Available- for-sale ($ in thousands) Balance as of December 31, 2014 $ 46,881 Total gains or losses (realized/unrealized) Included in earnings 791 Included in other comprehensive income (10,097 ) Purchases 89,602 Issuances — Settlements (33,000 ) Balance as of December 31, 2015 $ 94,177
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 December 31, 2016 and 2015. The fair value of a financial instrument is the amount at which the instrument could be exchanged in a current transaction between willing parties. December 31, 2016 December 31, 2015 Carrying amount Fair value Carrying amount Fair value ($ in thousands) Financial assets: Cash and cash equivalents $ 154,480 $ 154,480 $ 35,933 $ 35,933 Restricted cash 262,643 262,643 153,992 153,992 Cash collateral on deposit with custodians 7,564 7,564 61,081 61,081 Investments in debt securities available-for-sale 119,307 119,307 94,177 94,177 Loans and leases, net 3,239,191 3,241,910 3,134,072 3,147,117 Loans held-for-sale 144,060 145,406 478,785 483,781 Other assets 15,954 15,954 14,255 14,255 Financial liabilities: Credit facilities (1) $ 445,493 $ 445,493 $ 832,686 $ 832,686 Term debt (1) 2,195,064 2,230,102 1,821,519 1,819,344 Repurchase agreements (1) 55,046 55,046 96,224 101,433 Senior notes (1) 373,919 380,000 372,153 368,600 Subordinated notes (1) 241,390 303,916 209,509 266,857 Other liabilities 1,350 1,350 4,439 4,439 (1) Prior year has been adjusted to reflect the adoption of ASU 2015-03.
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 December 31, 2016 and 2015. The table excludes financial instruments for which the carrying amount approximates fair value such as cash and cash equivalents, restricted cash, cash collateral on deposit with custodians, investments in debt securities, available-for-sale, and financial information disclosed above. Fair Value Measurements December 31, 2016 Carrying amount Fair value Level 1 Level 2 Level 3 ($ in thousands) Financial assets: Loans and leases, net $ 3,239,191 $ 3,241,910 $ — $ — $ 3,241,910 Loans held-for-sale 144,060 145,406 — 69,875 75,531 Other assets 15,954 15,954 — — 15,954 Financial liabilities: Credit facilities 445,493 445,493 — 445,493 — Term debt securitizations 2,195,064 2,230,102 — 2,230,102 — Repurchase agreements 55,046 55,046 — 55,046 — Senior notes 373,919 380,000 — 380,000 — Subordinated notes 241,390 303,916 — — 303,916 Other liabilities 1,350 1,350 — — 1,350 December 31, 2015 Carrying amount Fair value Level 1 Level 2 Level 3 ($ in thousands) Financial assets: Loans and leases, net $ 3,134,072 $ 3,147,117 $ — $ — $ 3,147,117 Loans held-for-sale 478,785 483,781 — 483,781 — Other assets 14,255 14,255 — — 14,255 Financial liabilities: Credit facilities (1) 832,686 832,686 — 832,686 — Term debt securitizations (1) 1,821,519 1,819,344 — 1,819,344 — Repurchase agreements (1) 96,224 101,433 — 101,433 — Senior notes (1) 372,153 368,600 — 368,600 — Subordinated notes (1) 209,509 266,857 — — 266,857 Other liabilities 4,439 4,439 — 4,439 — (1) Prior year has been adjusted to reflect the adoption of ASU 2015-03.

Segment Reporting (Tables)

Segment Reporting (Tables)	12 Months Ended
	Dec. 31, 2016
Segment Reporting [Abstract]
Summary of Assets and Statement of Operations	The following tables presents the statement of operations and total assets for the Company’s reportable segments: Twelve Months Ended December 31, 2016 Commercial Lending Asset Management Consolidated Total ($ in thousands) Net interest income $ 84,454 $ 4,917 $ 89,371 Provision for loan losses 27,541 — 27,541 Net interest income after provision 56,913 4,917 61,830 Noninterest income: Management fees — 11,665 11,665 Performance fees — 1,734 1,734 Other lending fees 7,141 137 7,278 Gain/(loss) on sale of loans and equipment (1,598 ) 307 (1,291 ) Other noninterest income (1) 29,298 5,576 34,874 Total noninterest income 34,841 19,419 54,260 Non-interest expense 55,177 12,262 67,439 Income before income taxes $ 36,577 $ 12,074 $ 48,651 Income tax expense 20,427 Net income $ 28,224 (1) Includes fair value adjustment on Loans held-for-sale. Twelve months ended December 31, 2015 Commercial Lending Asset Management Consolidated Total ($ in thousands) Net interest income (loss) $ 81,005 $ (206 ) $ 80,799 Provision for loan losses 18,387 — 18,387 Net interest income after provision 62,618 (206 ) 62,412 Noninterest income: Management fees — 6,661 6,661 Other lending fees 13,508 — 13,508 Gain on sale of loans and equipment 1,108 — 1,108 Other noninterest (loss) income (1) (2,982 ) 62 (2,920 ) Total noninterest income 11,634 6,723 18,357 Non-interest expense 46,873 5,055 51,928 Income before income taxes $ 27,379 $ 1,462 $ 28,841 Income tax expense 11,951 Net income $ 16,890 (1) Includes fair value adjustment on Loans held-for-sale. Twelve Months Ended December 31, 2014 Commercial Lending Asset Management Consolidated Total ($ in thousands) Net interest income (loss) $ 83,663 $ (4,156 ) $ 79,507 Provision for loan losses 27,108 — 27,108 Net interest income after provision 56,555 (4,156 ) 52,399 Noninterest income: Management fees — 1,054 1,054 Other lending fees 2,466 1 2,467 Loss on sale of loans and equipment (201 ) — (201 ) Other noninterest income 8,585 (460 ) 8,125 Total noninterest income 10,850 595 11,445 Non-interest expense 45,363 402 45,765 Income (loss) before income taxes $ 22,042 $ (3,963 ) $ 18,079 Income tax expense 7,485 Net income $ 10,594 December 31, 2016 Commercial Lending Asset Management Total ($ in thousands) Loans and leases, gross (including loans at fair value of $403,745) $ 2,915,805 $ 403,745 $ 3,319,550 Loans held-for-sale, gross 145,966 — 145,966 Investments in debt securities, available-for-sale — 119,307 119,307 Other 374,851 80,918 455,769 Total Balance Sheet Assets 3,436,622 603,970 4,040,592 Illiquid Credit funds * — 1,314,690 1,314,690 Liquid/Tradeable Credit * — 1,833,607 1,833,607 Total Assets 3,436,622 3,752,267 7,188,889 Less: Non Managed assets (1) 374,851 74,175 449,026 Total Managed Assets $ 3,061,771 $ 3,678,092 $ 6,739,863 *Assets managed by the Company for the Illiquid Credit and Liquid/Tradeable Credit Funds are not assets of the Company and are not included in the Consolidated Total Assets as reflected in the Condensed Consolidated Balance Sheet. (1) Other less unamortized discount on investment in debt securities, available-for-sale. December 31, 2015 Commercial Lending Asset Management Total ($ in thousands) Loans and leases, gross $ 3,243,580 $ — $ 3,243,580 Loans held-for-sale, gross 485,874 — 485,874 Investments in debt securities, available-for-sale — 94,177 94,177 Other 205,256 22,496 227,752 Total Balance Sheet Assets 3,934,710 116,673 4,051,383 Illiquid Credit funds * — 824,573 824,573 Liquid/Tradeable Credit * — 2,294,497 2,294,497 Total Assets 3,934,710 3,235,743 7,170,453 Less: Non Managed assets (1) 205,256 15,731 220,987 Total Managed Assets $ 3,729,454 $ 3,220,012 $ 6,949,466 *Assets managed by the Company for the Illiquid Credit and Liquid/Tradeable Credit Funds are not assets of the Company and are not included in the Consolidated Total Assets as reflected in the Condensed Consolidated Balance Sheet. (1) Other less unamortized discount on investment in debt securities, available-for-sale.

Selected Quarterly Financial 49

Selected Quarterly Financial Data (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2016
Quarterly Financial Information Disclosure [Abstract]
Summary of Unaudited Quarterly Information	Unaudited quarterly information for 2016 and 2015 is shown in the following table. For the three months ended Dec. 31, 2016 Sept. 30, 2016 June 30, 2016 March 31, 2016 Dec. 31, 2015 Sept. 30, 2015 June 30, 2015 March 31, 2015 ($ in thousands) Summary Results of Operations Data: Interest income $ 64,217 $ 65,155 $ 59,392 $ 61,952 $ 60,591 $ 54,574 $ 46,871 $ 39,749 Interest expense 43,529 39,897 38,486 39,433 36,222 31,345 31,085 22,334 Net interest income 20,688 25,258 20,906 22,519 24,369 23,229 15,786 17,415 Provision for credit losses 2,635 3,570 3,623 17,713 3,667 4,534 3,208 6,978 Net interest income after provision for credit losses 18,053 21,688 17,283 4,806 20,702 18,695 12,578 10,437 Total non-interest income 19,783 10,966 4,359 19,152 3,310 3,492 7,429 4,126 Total operating expenses 19,462 18,069 12,840 17,068 16,872 13,380 11,444 10,232 Income before income taxes 18,374 14,585 8,802 6,890 7,140 8,807 8,563 4,331 Income tax expense 8,044 5,941 3,561 2,881 2,931 3,665 3,563 1,792 Net income $ 10,330 $ 8,644 $ 5,241 $ 4,009 $ 4,209 $ 5,142 $ 5,000 $ 2,539 Net income per share: Basic $ 0.23 $ 0.19 $ 0.11 $ 0.09 $ 0.09 $ 0.11 $ 0.11 $ 0.05 Diluted 0.23 0.19 0.11 0.09 0.09 0.11 0.10 0.05

Organization - Additional Infor

Organization - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2016USD ($)BusinessSegment
Schedule Of Investment Income Reported Amounts By Category [Line Items]
Assets managed	$ 6,700,000,000
Number of business lines | Business	2
Number of operating segment | Segment	2
Minimum [Member] | Commercial Lending Segment
Schedule Of Investment Income Reported Amounts By Category [Line Items]
Annual cash flow (EBITDA) of companies financed through specialized lending groups	$ 15,000,000
Maximum [Member] | Commercial Lending Segment
Schedule Of Investment Income Reported Amounts By Category [Line Items]
Annual cash flow (EBITDA) of companies financed through specialized lending groups	50,000,000
NewStar Capital [Member]
Schedule Of Investment Income Reported Amounts By Category [Line Items]
Assets managed	2,000,000,000
Private Credit Funds [Member]
Schedule Of Investment Income Reported Amounts By Category [Line Items]
Assets managed	$ 1,300,000,000

Organization - Commitments (Det

Organization - Commitments (Details)	12 Months Ended
	Dec. 31, 2016USD ($)
Other Commitments [Line Items]
Possible balance sheet exposure to a single customer - exceed	$ 35,000,000
Minimum [Member]
Other Commitments [Line Items]
Range of commitment per borrower	15,000,000
Maximum [Member]
Other Commitments [Line Items]
Range of commitment per borrower	$ 50,000,000

Summary of Significant Accoun52

Summary of Significant Accounting Policies - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2016
Accounting Policies [Abstract]
Cash and cash equivalents maturity period	Cash and cash equivalents include all demand deposits held in banks and certain highly liquid instruments with original maturities of 90 days or less
Financing receivable past due period	90 days

Summary of Significant Accoun53

Summary of Significant Accounting Policies - Property and Equipment are Carried at Cost and Depreciated or Amortized on a Straight-line Basis (Detail)	12 Months Ended
	Dec. 31, 2016
Leasehold Improvements [Member]
Property Plant And Equipment [Line Items]
Property and equipment estimated useful life	Shorter of estimated life or remaining lease term
Minimum [Member] | Furniture, Fixtures and Equipment [Member]
Property Plant And Equipment [Line Items]
Property and equipment useful life	3 years
Maximum [Member] | Furniture, Fixtures and Equipment [Member]
Property Plant And Equipment [Line Items]
Property and equipment useful life	5 years

Summary of Significant Accoun54

Summary of Significant Accounting Policies - ASU 2015-03 Impact on Condensed Consolidated Balance Sheet - (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Credit facilities, net	$ 445,493	$ 832,686
Term debt securitizations, net	2,195,064	1,821,519
Senior notes, net	373,919	372,153
Subordinated notes, net	241,390	209,509
Repurchase agreements	$ 55,046	96,224
ASU 2015-03 [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Credit facilities, net		832,686
Term debt securitizations, net		1,821,519
Senior notes, net		372,153
Subordinated notes, net		209,509
Repurchase agreements		96,224
ASU 2015-03 [Member] | Previously Reported [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Deferred financing costs, net		40,733
Credit facilities, net		843,896
Term debt securitizations, net		1,837,889
Senior notes, net		379,232
Subordinated notes, net		215,018
Repurchase agreements		$ 96,789

Acquisitions and Disposition 55

Acquisitions and Disposition Activities - Additional Information (Detail) - USD ($)	Dec. 01, 2016	Mar. 31, 2016	Oct. 07, 2015	Dec. 31, 2016	Dec. 31, 2015
Business Acquisition [Line Items]
Gain on sale of Business Credit, net				$ 22,511,000
Goodwill				17,884,000	$ 17,884,000
NewStar Equipment Finance Assets and Related Platform [Member]
Business Acquisition [Line Items]
Gain on sale of Business Credit, net	$ 6,700,000
Transaction related cost	$ 4,300,000
Contingent consideration liability				1,400,000
Initial indemnification of actual credit losses				10,000,000
Initial indemnification of actual credit losses on 2017				8,000,000
Initial indemnification of actual credit losses on 2018				5,000,000
Initial indemnification of actual credit losses on 2019				3,000,000
Initial indemnification of actual credit losses on 2020				$ 0
New Star Business Credit, LLC [Member]
Business Acquisition [Line Items]
Gain on sale of Business Credit, net		$ 22,500,000
Transaction related cost		$ 2,500,000
Feingold O’Keeffe Capital, LLC [Member]
Business Acquisition [Line Items]
Business acquisition date			Oct. 7, 2015
Percentage of outstanding limited liability interests acquired			100.00%
Total cash consideration paid			$ 20,800,000
Goodwill			17,900,000
Identified intangible assets			$ 1,400,000

Loans Held-for-Sale, Loans an56

Loans Held-for-Sale, Loans and Leases, and Allowance for Credit Losses - Loans Held-for-Sale (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans held-for-sale	$ 3,319,550	$ 3,243,580
Deferred loan fees, net	(29,423)	(51,249)
Total loans, net	3,239,191	3,134,072
Leveraged Finance [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans held-for-sale	3,308,926	2,627,314
Finance Receivables Loans Held For Sale [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans held-for-sale	145,966	485,874
Deferred loan fees, net	(1,906)	(7,089)
Total loans, net	144,060	478,785
Finance Receivables Loans Held For Sale [Member] | Leveraged Finance [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans held-for-sale	$ 145,966	$ 485,874

Loans Held-for-Sale, Loans an57

Loans Held-for-Sale, Loans and Leases, and Allowance for Credit Losses - Additional Information (Detail) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held-for-sale an aggregate outstanding balance	$ 145,966,000				$ 485,874,000				$ 145,966,000	$ 485,874,000
Realized (loss) gain on sale of loans, net									(2,095,000)	467,000	$ (230,000)
Loans and leases, net	3,239,191,000				3,134,072,000				3,239,191,000	3,134,072,000
Impaired loans	133,413,000				193,159,000				133,413,000	193,159,000
Impaired loans restructured and classified as TDR					183,600,000					183,600,000
Aggregate carrying value of equity investments	9,900,000				11,400,000				9,900,000	11,400,000
Recorded Investment in Nonaccrual Loans	99,233,000				111,268,000				99,233,000	111,268,000
Carrying value of non-accrual loans	92,900,000				104,700,000				92,900,000	104,700,000
Impaired loans, non-accrual status									27,100,000	38,200,000
Non-accrual loan returned to performing status	0				900,000				0	900,000
Specific provisions for impaired loans during the year									24,800,000	9,500,000
Specific allowance for impaired loans	19,800,000								19,800,000
Impaired loans with specific allowance	73,500,000				121,100,000				$ 73,500,000	$ 121,100,000
Number of days past due to classified as delinquent									60 days	60 days
Proceeds from sale of foreclosed property									$ 8,500,000
Transfer of loans, gross to other real estate owned									15,800,000
Gains (Losses) on Sales of Other Real Estate										$ (82,000)	15,000
Loans charged-off, net of recoveries									33,040,000	3,354,000	25,300
Specific allowance for impaired loans					26,800,000					26,800,000
Previously charged-off impaired loan outstanding balances, recovered									$ 400,000	800,000	100,000
Minimum number of years of database for risk rating analysis									25 years
Allowance for unfunded commitments	50,936,000				58,259,000				$ 50,936,000	58,259,000
Allowance for credit losses	51,408,000				58,726,000				51,408,000	58,726,000	43,693,000
Provision for credit losses	$ 2,635,000	$ 3,570,000	$ 3,623,000	$ 17,713,000	$ 3,667,000	$ 4,534,000	$ 3,208,000	$ 6,978,000	$ 27,541,000	$ 18,387,000	27,108,000
Allowance for credit losses, percentage									0.10%
Financing receivable percentage of impaired and troubled debt restructuring to all loans	4.00%				6.00%				4.00%	6.00%
Commitments To Extend Credit [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for unfunded commitments	$ 500,000				$ 500,000				$ 500,000	$ 500,000
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, charged off									25,700,000
Loans charged-off, net of recoveries										4,000,000
TDRs [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired loans restructured and classified as TDR	114,803,000				183,573,000				114,803,000	183,573,000
Specific allowance for impaired loans	15,939,000				24,958,000				15,939,000	24,958,000
Impaired loans related to delinquent loans	90,436,000				101,682,000				90,436,000	101,682,000
TDRs [Member] | Non-accrual Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans charged-off, net of recoveries									26,700,000	4,000,000
Nonperforming Financing Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Specific allowance for impaired loans	7,900,000				2,800,000				7,900,000	2,800,000
Range of commitment per borrower									11,900,000	10,900,000
Nonperforming Financing Receivable | Financing Receivables Greater Than 60 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired loans related to delinquent loans	21,100,000				18,600,000				21,100,000	18,600,000
Criticized [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases, net	118,700,000				152,100,000				118,700,000	152,100,000
Impaired loans	118,700,000				143,600,000				118,700,000	143,600,000
Loans Pass [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases, net	3,200,000,000				3,100,000,000				3,200,000,000	3,100,000,000
Other than NCOF [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans sold, aggregate amount	188,200,000				$ 105,300,000				188,200,000	105,300,000	59,000,000
Realized (loss) gain on sale of loans, net									(1,500,000)	$ 500,000	$ 200,000
Arlington Fund [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for credit losses	0								0
Credit Funds [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held-for-sale an aggregate outstanding balance	146,000,000								146,000,000
Loans sold, aggregate amount	$ 638,300,000								638,300,000
Realized (loss) gain on sale of loans, net									$ 900,000

Loans Held-for-Sale, Loans an58

Loans Held-for-Sale, Loans and Leases, and Allowance for Credit Losses - Summary of Loans and Leases (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Financing Receivable, Impaired [Line Items]
Loans and leases, gross	$ 3,319,550	$ 3,243,580
Deferred loan fees, net	(29,423)	(51,249)
Allowance for loan and lease losses	(50,936)	(58,259)
Total loans, net	3,239,191	3,134,072
Leveraged Finance [Member]
Financing Receivable, Impaired [Line Items]
Loans and leases, gross	3,308,926	2,627,314
Allowance for loan and lease losses	(50,844)	(54,321)
Business Credit [Member]
Financing Receivable, Impaired [Line Items]
Loans and leases, gross		342,281
Allowance for loan and lease losses		(1,991)
Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Loans and leases, gross	10,624	100,732
Allowance for loan and lease losses	$ (92)	(656)
Equipment Finance [Member]
Financing Receivable, Impaired [Line Items]
Loans and leases, gross		173,253
Allowance for loan and lease losses		$ (1,291)

Loans Held-for-Sale, Loans an59

Loans Held-for-Sale, Loans and Leases, and Allowance for Credit Losses - Summary of Loans and Leases (Parenthetical) (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Loans Held For Sale Loans And Allowance For Credit Losses [Abstract]
Loans at fair value	$ 403,745	$ 0

Loans Held-for-Sale, Loans an60

Loans Held-for-Sale, Loans and Leases, and Allowance for Credit Losses - Summary of Impaired Loans (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Financing Receivable, Impaired [Line Items]
Investment, Net of Charge-offs	$ 133,413	$ 193,159
Investment, Net of Unamortized Discount/Premium	126,839	186,316
Unpaid Principal	154,879	227,511
Recorded Investment with a Related Allowance for Credit Losses	73,499	121,102
Recorded Investment, net, with a Related Allowance for Credit Losses	68,924	114,467
Recorded Investment without a Related Allowance for Credit Losses	59,914	72,057
Recorded Investment, net, without a Related Allowance for Credit Losses	57,915	71,849
Leveraged Finance [Member]
Financing Receivable, Impaired [Line Items]
Investment, Net of Charge-offs	133,413	157,446
Investment, Net of Unamortized Discount/Premium	126,839	150,692
Unpaid Principal	154,879	188,453
Recorded Investment with a Related Allowance for Credit Losses	73,499	113,397
Recorded Investment, net, with a Related Allowance for Credit Losses	68,924	106,762
Recorded Investment without a Related Allowance for Credit Losses	59,914	44,049
Recorded Investment, net, without a Related Allowance for Credit Losses	$ 57,915	43,930
Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Investment, Net of Charge-offs		34,941
Investment, Net of Unamortized Discount/Premium		34,915
Unpaid Principal		38,286
Recorded Investment with a Related Allowance for Credit Losses		7,705
Recorded Investment, net, with a Related Allowance for Credit Losses		7,705
Recorded Investment without a Related Allowance for Credit Losses		27,236
Recorded Investment, net, without a Related Allowance for Credit Losses		27,210
Equipment Finance [Member]
Financing Receivable, Impaired [Line Items]
Investment, Net of Charge-offs		772
Investment, Net of Unamortized Discount/Premium		709
Unpaid Principal		772
Recorded Investment without a Related Allowance for Credit Losses		772
Recorded Investment, net, without a Related Allowance for Credit Losses		$ 709

Loans Held-for-Sale, Loans an61

Loans Held-for-Sale, Loans and Leases, and Allowance for Credit Losses - Evaluation Summary of Amortized Cost Portfolio and Allowance for Loan and Lease Losses by Impairment (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance, Total	$ 50,936	$ 58,259
Investment, Collectively evaluated	2,782,392	3,050,421
Total investment evaluated	2,915,805	3,243,580
Leveraged Finance [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance, Collectively evaluated	31,073	27,874
Allowance, Individually evaluated	19,771	26,447
Allowance, Total	50,844	54,321
Investment, Collectively evaluated	2,771,768	2,469,868
Investment, Individually evaluated	133,413	157,446
Total investment evaluated	2,905,181	2,627,314
Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance, Collectively evaluated	92	350
Allowance, Individually evaluated		306
Allowance, Total	92	656
Investment, Collectively evaluated	10,624	65,791
Investment, Individually evaluated		34,941
Total investment evaluated	$ 10,624	100,732
Business Credit [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance, Collectively evaluated		1,991
Allowance, Total		1,991
Investment, Collectively evaluated		342,281
Total investment evaluated		342,281
Equipment Finance [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance, Collectively evaluated		1,291
Allowance, Total		1,291
Investment, Collectively evaluated		172,481
Investment, Individually evaluated		772
Total investment evaluated		$ 173,253

Loans Held-for-Sale, Loans an62

Loans Held-for-Sale, Loans and Leases, and Allowance for Credit Losses - Evaluation Summary of Amortized Cost Portfolio and Allowance for Loan and Lease Losses by Impairment (Parenthetical) (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)
Financing Receivable, Allowance for Credit Losses [Line Items]
Fair value of loans acquired	$ 2,230,102	$ 1,819,344
Leveraged Finance [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Weighted Average Risk Rating of Loans and Leases	5.2	5.1
Point Scale Used to Determine Weighted Average Risk Rating of Loans and Leases	12	12
Fair value of loans acquired	$ 403,700
Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Weighted Average Risk Rating of Loans and Leases	5.2	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
Point Scale Used to Determine Weighted Average Risk Rating of Loans and Leases		12
Business Credit [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Weighted Average Risk Rating of Loans and Leases		5
Point Scale Used to Determine Weighted Average Risk Rating of Loans and Leases		10

Loans Held-for-Sale, Loans an63

Loans Held-for-Sale, Loans and Leases, and Allowance for Credit Losses - Summary of Company's Net Investment in Nonaccrual Loans (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Financing Receivable, Impaired [Line Items]
Recorded Investment in Nonaccrual Loans	$ 99,233	$ 111,268
Less: Deferred fees	(6,485)	(6,616)
Add back: Interest Receivable	116	34
Total	92,864	104,686
Leveraged Finance [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment in Nonaccrual Loans	$ 99,233	103,563
Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment in Nonaccrual Loans		$ 7,705

Loans Held-for-Sale, Loans an64

Loans Held-for-Sale, Loans and Leases, and Allowance for Credit Losses - Summary of Types of Concessions with Respect to TDRs (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Troubled Debt Restructuring, Debtor, Subsequent Periods [Line Items]
Impaired loans restructured and classified as TDR		$ 183,600
Group I [Member]
Troubled Debt Restructuring, Debtor, Subsequent Periods [Line Items]
Impaired loans restructured and classified as TDR	$ 114,803	183,573
Group II [Member]
Troubled Debt Restructuring, Debtor, Subsequent Periods [Line Items]
Impaired loans restructured and classified as TDR	$ 77,061	$ 162,986

Loans Held-for-Sale, Loans an65

Loans Held-for-Sale, Loans and Leases, and Allowance for Credit Losses - Summary of the Company's Loans Classified as TDR (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Financing Receivable, Modifications [Line Items]
Pre-Modification Outstanding Recorded Investment	$ 49,536	$ 42,276
Post-Modification Outstanding Recorded Investment	27,216	42,276
Investment in TDR Subsequently Defaulted	23,399	29,339
Leveraged Finance [Member]
Financing Receivable, Modifications [Line Items]
Pre-Modification Outstanding Recorded Investment	49,536	13,650
Post-Modification Outstanding Recorded Investment	27,216	13,650
Investment in TDR Subsequently Defaulted	18,916	29,339
Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Pre-Modification Outstanding Recorded Investment		27,704
Post-Modification Outstanding Recorded Investment		27,704
Investment in TDR Subsequently Defaulted	$ 4,483
Equipment Finance [Member]
Financing Receivable, Modifications [Line Items]
Pre-Modification Outstanding Recorded Investment		922
Post-Modification Outstanding Recorded Investment		$ 922

Loans Held-for-Sale, Loans an66

Loans Held-for-Sale, Loans and Leases, and Allowance for Credit Losses - Breakdown of TDRs (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Troubled Debt Restructuring, Debtor, Subsequent Periods [Line Items]
Impaired Balance		$ 183,600
Specific Allowance	$ 19,800
TDRs [Member]
Troubled Debt Restructuring, Debtor, Subsequent Periods [Line Items]
Accruing	24,367	81,891
Nonaccrual	90,436	101,682
Impaired Balance	114,803	183,573
Specific Allowance	15,939	24,958
Charged- off	26,684	4,000
TDRs [Member] | Leveraged Finance [Member]
Troubled Debt Restructuring, Debtor, Subsequent Periods [Line Items]
Accruing	24,367	53,883
Nonaccrual	90,436	93,977
Impaired Balance	114,803	147,860
Specific Allowance	15,939	24,958
Charged- off	$ 26,684	4,000
TDRs [Member] | Real Estate [Member]
Troubled Debt Restructuring, Debtor, Subsequent Periods [Line Items]
Accruing		27,236
Nonaccrual		7,705
Impaired Balance		34,941
TDRs [Member] | Equipment Finance [Member]
Troubled Debt Restructuring, Debtor, Subsequent Periods [Line Items]
Accruing		772
Impaired Balance		$ 772

Loans Held-for-Sale, Loans an67

Loans Held-for-Sale, Loans and Leases, and Allowance for Credit Losses - Aged Analysis of Past Due Receivables (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	$ 21,135	$ 27,165
Current	3,298,415	3,216,415
Total Loans and Leases	3,319,550	3,243,580
Investment in > 60 Days & Accruing		8,530
Leveraged Finance [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	21,135	27,165
Current	3,287,791	2,600,149
Total Loans and Leases	3,308,926	2,627,314
Investment in > 60 Days & Accruing		8,530
Business Credit [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Current		342,281
Total Loans and Leases		342,281
Real Estate [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Current	10,624	100,732
Total Loans and Leases	10,624	100,732
Equipment Finance [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Current		173,253
Total Loans and Leases		173,253
Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	21,135	27,165
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Leveraged Finance [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	$ 21,135	$ 27,165

Loans Held-for-Sale, Loans an68

Loans Held-for-Sale, Loans and Leases, and Allowance for Credit Losses - Summary Activity in the Allowance for Credit Losses (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning of period	$ 58,726,000	$ 43,693,000
Provision for credit losses—general	2,751,000	8,892,000
Provision for credit losses—specific	24,790,000	9,495,000
Reversal due to sale of Business Credit	(1,819,000)
Loans charged off, net of recoveries	(33,040,000)	(3,354,000)	$ (25,300)
Balance, end of period	51,408,000	58,726,000	43,693,000
Balance, end of period—specific	19,771,000	26,753,000
Balance, end of period—general	31,637,000	31,973,000
Average balance of impaired loans and leases	200,881,000	208,684,000
Interest recognized from impaired loans and leases	10,911,000	12,990,000
Loans individually evaluated with specific allowance	73,499,000	121,102,000
Loans individually evaluated with no specific allowance	59,914,000	72,057,000
Loans and leases collectively evaluated without specific allowance	2,782,392,000	3,050,421,000
Total investment evaluated	2,915,805,000	3,243,580,000
Leases [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Average balance of impaired loans and leases	542,000	863,000
Leveraged Finance [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning of period	54,788,000	41,480,000
Provision for credit losses—general	3,204,000	7,473,000
Provision for credit losses—specific	20,483,000	9,043,000
Loans charged off, net of recoveries	(27,159,000)	(3,208,000)
Balance, end of period	51,316,000	54,788,000	41,480,000
Balance, end of period—specific	19,771,000	26,447,000
Balance, end of period—general	31,545,000	28,341,000
Average balance of impaired loans and leases	176,286,000	172,578,000
Interest recognized from impaired loans and leases	9,679,000	11,370,000
Loans individually evaluated with specific allowance	73,499,000	113,397,000
Loans individually evaluated with no specific allowance	59,914,000	44,049,000
Loans and leases collectively evaluated without specific allowance	2,771,768,000	2,469,868,000
Total investment evaluated	2,905,181,000	2,627,314,000
Business Credit [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning of period	1,991,000	1,334,000
Provision for credit losses—general	(172,000)	657,000
Reversal due to sale of Business Credit	(1,819,000)
Balance, end of period		1,991,000	1,334,000
Balance, end of period—general		1,991,000
Loans and leases collectively evaluated without specific allowance		342,281,000
Total investment evaluated		342,281,000
Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning of period	656,000	257,000
Provision for credit losses—general	1,010,000	93,000
Provision for credit losses—specific	4,307,000	306,000
Loans charged off, net of recoveries	(5,881,000)
Balance, end of period	92,000	656,000	257,000
Balance, end of period—specific		306,000
Balance, end of period—general	92,000	350,000
Average balance of impaired loans and leases	24,595,000	36,106,000
Interest recognized from impaired loans and leases	1,220,000	1,584,000
Loans individually evaluated with specific allowance		7,705,000
Loans individually evaluated with no specific allowance		27,236,000
Loans and leases collectively evaluated without specific allowance	10,624,000	65,791,000
Total investment evaluated	10,624,000	100,732,000
Equipment Finance [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning of period	1,291,000	622,000
Provision for credit losses—general	(1,291,000)	669,000
Provision for credit losses—specific		146,000
Loans charged off, net of recoveries		(146,000)
Balance, end of period		1,291,000	$ 622,000
Balance, end of period—general		1,291,000
Interest recognized from impaired loans and leases	12,000	36,000
Loans individually evaluated with no specific allowance		772,000
Loans and leases collectively evaluated without specific allowance		172,481,000
Total investment evaluated		173,253,000
Equipment Finance [Member] | Leases [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Average balance of impaired loans and leases	$ 542,000	$ 863,000

Loans Held-for-Sale, Loans an69

Loans Held-for-Sale, Loans and Leases, and Allowance for Credit Losses - Summary Activity in the Allowance for Credit Losses (Parenthetical) (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Financing Receivable, Allowance for Credit Losses [Line Items]
Fair value of loans acquired	$ 2,230,102	$ 1,819,344
Leveraged Finance [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Fair value of loans acquired	$ 403,700

Restricted Cash - Summary of Re

Restricted Cash - Summary of Restricted Cash (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Restricted Cash And Investments [Abstract]
Collections on loans pledged to credit facilities	$ 43,822	$ 67,892
Principal and interest collections on loans held in trust and prefunding amounts	216,501	85,823
Customer escrow accounts	2,320	277
Total	$ 262,643	$ 153,992

Restricted Cash - Additional In

Restricted Cash - Additional Information (Detail) $ in Millions	Dec. 31, 2016USD ($)
Restricted Cash And Investments [Abstract]
Restricted cash to fund new or existing loans	$ 183.6

Investments in Debt Securitie72

Investments in Debt Securities, Available-for-Sale - Summary of Amortized Cost of Investments in Debt Securities (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Investments Debt And Equity Securities [Abstract]
Investments in debt securities—gross	$ 132,180	$ 111,020
Unamortized discount	(6,743)	(6,765)
Investments in debt securities—amortized cost	$ 125,437	$ 104,255

Investments in Debt Securitie73

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	Dec. 31, 2016	Dec. 31, 2015
Guarantee Obligations [Line Items]
Investments in debt securities—amortized cost	$ 125,437	$ 104,255
Gross unrealized holding gains	286
Gross unrealized holding losses	(6,416)	(10,078)
Fair value	119,307	94,177
Collateralized Loan Obligations [Member]
Guarantee Obligations [Line Items]
Investments in debt securities—amortized cost	125,437	104,255
Gross unrealized holding gains	286
Gross unrealized holding losses	(6,416)	(10,078)
Fair value	$ 119,307	$ 94,177

Investments in Debt Securitie74

Investments in Debt Securities, Available-for-Sale - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Investments Debt And Equity Securities [Abstract]
Purchased debt securities	$ 26,313,000	$ 89,602,000	$ 38,255,000
Proceeds from repayments of debt securities available-for-sale	6,000,000	33,000,000	14,000,000
Sale of debt securities	0	0	0
Net OTTI	$ 0	$ 0	$ 0

Investments in Debt Securitie75

Investments in Debt Securities, Available-for-Sale - Summary of Unrealized Loss on Investments (Detail) $ in Thousands	Dec. 31, 2016USD ($)Position	Dec. 31, 2015USD ($)Position
Investments Debt And Equity Securities [Abstract]
Number of positions, Less than 12 Months | Position	3	20
Fair value, Less than 12 Months	$ 4,811	$ 86,245
Amortized cost, Less than 12 Months	4,885	95,624
Unrealized loss, Less than 12 Months	$ (74)	$ (9,379)
Number of positions, Greater than or Equal to 12 Months | Position	17	3
Fair value, Greater than or Equal to 12 Months	$ 68,737	$ 7,932
Amortized cost, Greater than or Equal to 12 Months	75,079	8,631
Unrealized loss, Greater than or Equal to 12 Months	$ (6,342)	$ (699)
Number of positions | Position	20	23
Fair value	$ 73,548	$ 94,177
Amortized cost	79,964	104,255
Unrealized loss	$ (6,416)	$ (10,078)

Investments in Debt Securitie76

Investments in Debt Securities, Available-for-Sale - Summary of Maturities of Debt Securities (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Investments Debt And Equity Securities [Abstract]
Amortized cost, Available-for-sale, Due one year or less	$ 91
Amortized cost, Available-for-sale, Due after five years through ten years	53,177	$ 34,017
Amortized cost, Available-for-sale, Due after ten years through fifteen years	72,169	70,238
Investments in debt securities—amortized cost	125,437	104,255
Fair value, Available-for-sale, Due one year or less	20
Fair value, Available-for-sale, Due after five years through ten years	48,404	30,470
Fair value, Available-for-sale, Due after ten years through fifteen years	70,883	63,707
Fair value	$ 119,307	$ 94,177

Fixed Assets - Summary of Fixed

Fixed Assets - Summary of Fixed Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Property Plant And Equipment [Line Items]
Plant, property and equipment, Gross	$ 3,015	$ 3,724
Less: Accumulated depreciation and amortization	2,741	3,086
Property, Plant and Equipment, Net, Total	274	638
Leasehold Improvements [Member]
Property Plant And Equipment [Line Items]
Plant, property and equipment, Gross	1,954	2,271
Non-Depreciable Assets [Member]
Property Plant And Equipment [Line Items]
Plant, property and equipment, Gross	20	20
Furniture and Equipment [Member]
Property Plant And Equipment [Line Items]
Plant, property and equipment, Gross	651	941
Software [Member]
Property Plant And Equipment [Line Items]
Plant, property and equipment, Gross	$ 390	$ 492

Fixed Assets - Additional Infor

Fixed Assets - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Property Plant And Equipment [Abstract]
Depreciation expense	$ 0.2	$ 0.2	$ 0.3

Goodwill and Identified Intan79

Goodwill and Identified Intangibles Assets - Schedule of Carrying Value of Goodwill (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill	$ 17,884	$ 17,884
Total	$ 17,884	$ 17,884

Goodwill and Identified Intan80

Goodwill and Identified Intangibles Assets - Additional Information (Detail) - Customer Contracts and Related Customer Relationships [Member] - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Finite Lived Intangible Assets [Line Items]
Carrying amount of identified intangible assets	$ 600,000
Identified intangible asset amortization period	33 months
Amortization expense of identified intangible assets	$ 300,000	$ 500,000	$ 0

Borrowings - Credit Facilities

Borrowings - Credit Facilities - Additional Information (Detail)	Dec. 01, 2016USD ($)	Sep. 15, 2016USD ($)	Mar. 31, 2016USD ($)	Dec. 31, 2016USD ($)CreditFacility	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)	Feb. 29, 2016USD ($)
Line of Credit Facility [Line Items]
Number of credit facility | CreditFacility				2
Outstanding balance of credit facility				$ 445,493,000	$ 832,686,000
Repayment of borrowings on credit facilities				1,963,618,000	$ 2,344,888,000	$ 1,401,552,000
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				615,000,000			$ 475,000,000
Outstanding balance of credit facility				401,100,000
Unamortized deferred financing fees				$ 6,400,000
Reinvestment period expiration date				Aug. 10, 2018
Amortization period of credit facility				2 years
Maturity date of facility				Aug. 10, 2020
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	$ 16,900,000
Repayment of borrowings on credit facilities	$ 75,000,000
Wells Fargo Bank, National Association [Member] | Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Current borrowing capacity of credit facility			$ 165,000,000
Repayment of borrowings on credit facilities			135,400,000
Accelerated deferred financing fees			700,000
Citibank, N.A. [Member] | Revolving Credit Facility, Leveraged Finance Loans [Member]
Line of Credit Facility [Line Items]
Amount of credit facility				$ 250,000,000
Outstanding balance of credit facility				53,200,000
Unamortized deferred financing fees				$ 2,400,000
Reinvestment period expiration date				May 5, 2018
Amortization period of credit facility				2 years
Credit Suisse [Member] | Revolving Credit Facility, Purchase of Broadly Syndicated Bank Loans [Member]
Line of Credit Facility [Line Items]
Repayment of borrowings on credit facilities		$ 350,000,000
DZ Bank [Member] | Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Amount of credit facility			175,000,000
Repayment of borrowings on credit facilities			102,000,000
Accelerated deferred financing fees			$ 1,100,000

Borrowings - Senior Notes - Add

Borrowings - Senior Notes - Additional Information (Detail) - 7.25% Senior Notes Due 2020 [Member] - USD ($)	Nov. 09, 2015	Apr. 22, 2015	Mar. 31, 2016	Dec. 31, 2016
Line of Credit Facility [Line Items]
Debt instrument face amount		$ 300,000,000
Debt instrument, interest rate (percent)		7.25%
Debt Instrument, additional amount borrowed	$ 80,000,000
Unamortized discount	$ 800,000
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
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. 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%
Unamortized deferred financing fees				$ 5,500,000
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%
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 - Additional Information (Detail) - Franklin Square - Subordinated Notes [Member] - USD ($)	Dec. 04, 2014	Jan. 31, 2016	Dec. 31, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Debt instrument face amount	$ 200,000,000
Debt Instrument, Term (in years)	10 years
Debt Instrument, additional amount borrowed				$ 75,000,000
Debt Instrument, remaining borrowings		$ 25,000,000
Warrants and Rights Outstanding			$ 53,700,000	$ 60,000,000
Unamortized deferred financing fees			$ 4,900,000
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
Debt Instrument, Redemption, Period One [Member]
Debt Instrument [Line Items]
Debt Instrument, Redemption Period With Make-Whole Premium (in years)	3 years
Debt Instrument, Redemption, Period Two [Member]
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage	103.00%
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 ($)

Nov. 30, 2016

Oct. 17, 2016

Sep. 15, 2016

Mar. 02, 2016

Sep. 15, 2015

Sep. 01, 2015

Mar. 20, 2015

Apr. 17, 2014

Sep. 11, 2013

Dec. 18, 2012

Jun. 30, 2007

Dec. 31, 2016

Dec. 31, 2012

Dec. 31, 2010

Dec. 31, 2009

Dec. 31, 2015

Jun. 12, 2015

Debt Instrument [Line Items]

Outstanding balance on drawn notes

$ 2,195,064,000

$ 1,821,519,000

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

232,953,000

Principal collection and payments receivable of secured debt

279,200,000

Deferred financing costs, net

$ 700,000

Collateral principal repayments maturity period

3 years

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 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

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 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

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

321,887,000

Principal collection and payments receivable of secured debt

383,300,000

Deferred financing costs, net

$ 2,600,000

Collateral principal repayments maturity period

3 years

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 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

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 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

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

Deferred financing costs, net

$ 2,000,000

Collateral principal repayments maturity period

4 years

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 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

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

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

Deferred financing costs, net

$ 3,200,000

Collateral principal repayments maturity period

4 years

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 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 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

2015-2 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

Deferred financing costs, net

$ 2,900,000

Collateral principal repayments maturity period

4 years

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 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

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 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

2016-1 CLO [Member]

Debt Instrument [Line Items]

Loans and investments provided to bankruptcy remote subsidiary

$ 247,300,000

Notes issued or additional notes to institutional investors

$ 255,800,000

263,250,000

Notes issued and retained as trust certificate percentage

100.00%

Outstanding balance on drawn notes

263,250,000

Principal collection and payments receivable of secured debt

348,000,000

Deferred financing costs, net

$ 2,400,000

Collateral principal repayments maturity period

4 years

Collateral principal repayments expiration

2020-02

2016-1 CLO [Member] | Trust Certificates [Member]

Debt Instrument [Line Items]

Notes issued or additional notes to institutional investors

$ 92,200,000

2016-1 CLO [Member] | Class D [Member]

Debt Instrument [Line Items]

Notes issued or additional notes to institutional investors

$ 7,500,000

Outstanding balance on drawn notes

7,500,000

2016-1 CLO [Member] | Class C [Member]

Debt Instrument [Line Items]

Notes issued or additional notes to institutional investors

22,500,000

Outstanding balance on drawn notes

22,500,000

Arch Street CLO [Member]

Debt Instrument [Line Items]

Notes issued or additional notes to institutional investors

$ 370,300,000

370,250,000

Notes issued and retained as trust certificate percentage

9.60%

Outstanding balance on drawn notes

370,250,000

Deferred financing costs, net

$ 4,200,000

Collateral principal repayments expiration

2020-10

Completion of syndicated loan securitization

$ 409,800,000

Collateralized principal repayments scheduled maturity date

2028-10

Arch Street CLO [Member] | Trust Certificates [Member]

Debt Instrument [Line Items]

Notes issued or additional notes to institutional investors

$ 39,500,000

Notes issued and retained as trust certificate percentage

90.40%

Arch Street CLO [Member] | Class E [Member]

Debt Instrument [Line Items]

Notes issued or additional notes to institutional investors

$ 21,000,000

Outstanding balance on drawn notes

21,000,000

Arch Street CLO [Member] | Class D [Member]

Debt Instrument [Line Items]

Notes issued or additional notes to institutional investors

22,750,000

Outstanding balance on drawn notes

22,750,000

Arch Street CLO [Member] | Class C [Member]

Debt Instrument [Line Items]

Notes issued or additional notes to institutional investors

20,000,000

Outstanding balance on drawn notes

$ 20,000,000

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

Notes issued and retained as trust certificate percentage

100.00%

Collateral principal repayments maturity period

6 years

Principal distribution received

$ 35,800,000

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 D [Member]

Debt Instrument [Line Items]

Purchase of Long Term Debt

$ 5,000,000

$ 1,000,000

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

Debt Instrument [Line Items]

Purchase of Long Term Debt

$ 200,000

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

Deferred financing costs, net

$ 1,100,000

Principal distribution received

$ 12,800,000

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

Debt Instrument [Line Items]

Notes issued or additional notes to institutional investors

$ 40,600,000

Borrowings - Summary of Borrowi

Borrowings - Summary of Borrowings (Detail) - USD ($)	Mar. 20, 2017	Dec. 31, 2016	Sep. 15, 2016	Mar. 02, 2016	Dec. 31, 2015	Sep. 15, 2015	Jun. 12, 2015	Mar. 20, 2015	Apr. 17, 2014	Sep. 11, 2013	Dec. 18, 2012
Financial Instruments Owned and Pledged as Collateral [Line Items]
Term debt securitizations, net		$ 2,195,064,000			$ 1,821,519,000
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, net		232,953,000
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, net		321,887,000
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, net		289,500,000
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, net		410,250,000
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, net		327,750,000
2016-1 CLO [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued		263,250,000		$ 255,800,000
Term debt securitizations, net		263,250,000
Arch Street CLO [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued		370,250,000	$ 370,300,000
Term debt securitizations, net		370,250,000
Class A [Member] | 2012-2 CLO [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued		190,700,000
Term debt securitizations, net		$ 144,053,000
Interest rate		Libor+1.90%
Legal final maturity		Jan. 20, 2023
Class A [Member] | Two Thousand And Twelve Two Commercial Loan Trust [Member] | London Interbank Offered Rate (LIBOR) [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Basis Spread on Variable Rate		1.90%
Class A [Member] | 2014-1 CLO [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued		$ 202,500,000
Term debt securitizations, net		$ 202,500,000
Interest rate		Libor+1.80%
Legal final maturity		Apr. 20, 2025
Class A [Member] | 2014-1 CLO [Member] | London Interbank Offered Rate (LIBOR) [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Basis Spread on Variable Rate		1.80%
Class A [Member] | Arch Street CLO [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued		$ 256,000,000
Term debt securitizations, net		$ 256,000,000
Interest rate		Libor+1.65%
Legal final maturity		Oct. 20, 2028
Class A [Member] | Arch Street CLO [Member] | London Interbank Offered Rate (LIBOR) [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Basis Spread on Variable Rate		1.65%
Class B | 2012-2 CLO [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued		$ 26,000,000
Term debt securitizations, net		$ 26,000,000
Interest rate		Libor+3.25%
Legal final maturity		Jan. 20, 2023
Class B | Two Thousand And Twelve Two Commercial Loan Trust [Member] | London Interbank Offered Rate (LIBOR) [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Basis Spread on Variable Rate		3.25%
Class B | 2013-1 CLO [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued		$ 38,000,000
Term debt securitizations, net		$ 38,000,000
Interest rate		Libor+2.30%
Legal final maturity		Sep. 20, 2023
Class B | Two Thousand And Thirteen One Commercial Loan Trust [Member] | London Interbank Offered Rate (LIBOR) [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Basis Spread on Variable Rate		2.30%
Class B | 2015-1 CLO [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued		$ 50,000,000
Term debt securitizations, net		$ 50,000,000
Interest rate		Libor+2.80%
Basis Spread on Variable Rate		2.80%
Legal final maturity		Jan. 20, 2027
Class B | 2015-2 CLO [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued		$ 40,000,000
Term debt securitizations, net		$ 40,000,000
Interest rate		Libor+2.90%
Legal final maturity		Aug. 25, 2027
Class B | 2015-2 CLO [Member] | London Interbank Offered Rate (LIBOR) [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Basis Spread on Variable Rate		2.90%
Class B | 2016-1 CLO [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued		$ 36,750,000
Term debt securitizations, net		$ 36,750,000
Interest rate		Libor+3.75%
Legal final maturity		Feb. 25, 2028
Class B | 2016-1 CLO [Member] | London Interbank Offered Rate (LIBOR) [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Basis Spread on Variable Rate		3.75%
Class B | Arch Street CLO [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued		$ 48,000,000
Term debt securitizations, net		$ 48,000,000
Interest rate		Libor+2.24%
Legal final maturity		Oct. 20, 2028
Class B | Arch Street CLO [Member] | London Interbank Offered Rate (LIBOR) [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Basis Spread on Variable Rate		2.24%
Class C [Member] | 2012-2 CLO [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued		$ 35,200,000
Term debt securitizations, net		$ 35,200,000
Interest rate		Libor+4.25%
Legal final maturity		Jan. 20, 2023
Class C [Member] | Two Thousand And Twelve Two Commercial Loan Trust [Member] | London Interbank Offered Rate (LIBOR) [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Basis Spread on Variable Rate		4.25%
Class C [Member] | 2013-1 CLO [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued		$ 36,000,000
Term debt securitizations, net		$ 36,000,000
Interest rate		Libor+3.80%
Legal final maturity		Sep. 20, 2023
Class C [Member] | Two Thousand And Thirteen One Commercial Loan Trust [Member] | London Interbank Offered Rate (LIBOR) [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Basis Spread on Variable Rate		3.80%
Class C [Member] | 2014-1 CLO [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued		$ 30,250,000
Term debt securitizations, net		$ 30,250,000
Interest rate		Libor+3.60%
Legal final maturity		Apr. 20, 2025
Class C [Member] | 2014-1 CLO [Member] | London Interbank Offered Rate (LIBOR) [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Basis Spread on Variable Rate		3.60%
Class C [Member] | 2015-1 CLO [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued		$ 38,500,000
Term debt securitizations, net		$ 38,500,000
Interest rate		Libor+3.85%
Basis Spread on Variable Rate		3.85%
Legal final maturity		Jan. 20, 2027
Class C [Member] | 2015-2 CLO [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued		$ 26,250,000
Term debt securitizations, net		$ 26,250,000
Interest rate		Libor+3.95%
Legal final maturity		Aug. 25, 2027
Class C [Member] | 2015-2 CLO [Member] | London Interbank Offered Rate (LIBOR) [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Basis Spread on Variable Rate		3.95%
Class C [Member] | 2016-1 CLO [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued		$ 22,500,000
Term debt securitizations, net		$ 22,500,000
Interest rate		Libor+5.40%
Legal final maturity		Feb. 25, 2028
Class C [Member] | 2016-1 CLO [Member] | London Interbank Offered Rate (LIBOR) [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Basis Spread on Variable Rate		5.40%
Class C [Member] | Arch Street CLO [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued		$ 20,000,000
Term debt securitizations, net		$ 20,000,000
Interest rate		Libor+3.00%
Legal final maturity		Oct. 20, 2028
Class C [Member] | Arch Street CLO [Member] | London Interbank Offered Rate (LIBOR) [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Basis Spread on Variable Rate		3.00%
Class D [Member] | 2012-2 CLO [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued		$ 11,400,000
Term debt securitizations, net		$ 11,400,000
Interest rate		Libor+6.25%
Legal final maturity		Jan. 20, 2023
Class D [Member] | Two Thousand And Twelve Two Commercial Loan Trust [Member] | London Interbank Offered Rate (LIBOR) [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Basis Spread on Variable Rate		6.25%
Class D [Member] | 2013-1 CLO [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued		$ 21,000,000
Term debt securitizations, net		$ 21,000,000
Interest rate		Libor+4.55%
Legal final maturity		Sep. 20, 2023
Class D [Member] | Two Thousand And Thirteen One Commercial Loan Trust [Member] | London Interbank Offered Rate (LIBOR) [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Basis Spread on Variable Rate		4.55%
Class D [Member] | 2014-1 CLO [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued		$ 23,500,000
Term debt securitizations, net		$ 23,500,000
Interest rate		Libor+4.75%
Legal final maturity		Apr. 20, 2025
Class D [Member] | 2014-1 CLO [Member] | London Interbank Offered Rate (LIBOR) [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Basis Spread on Variable Rate		4.75%
Class D [Member] | 2015-1 CLO [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued		$ 33,250,000
Term debt securitizations, net		$ 33,250,000
Interest rate		Libor+5.50%
Basis Spread on Variable Rate		5.50%
Legal final maturity		Jan. 20, 2027
Class D [Member] | 2015-2 CLO [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued		$ 28,500,000
Term debt securitizations, net		$ 28,500,000
Interest rate		Libor+5.25%
Legal final maturity		Aug. 25, 2027
Class D [Member] | 2015-2 CLO [Member] | London Interbank Offered Rate (LIBOR) [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Basis Spread on Variable Rate		5.25%
Class D [Member] | 2016-1 CLO [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued		$ 7,500,000
Term debt securitizations, net		$ 7,500,000
Interest rate		Libor+5.50%
Legal final maturity		Feb. 25, 2028
Class D [Member] | 2016-1 CLO [Member] | London Interbank Offered Rate (LIBOR) [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Basis Spread on Variable Rate		5.50%
Class D [Member] | Arch Street CLO [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued		$ 22,750,000
Term debt securitizations, net		$ 22,750,000
Interest rate		Libor+4.20%
Legal final maturity		Oct. 20, 2028
Class D [Member] | Arch Street CLO [Member] | London Interbank Offered Rate (LIBOR) [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Basis Spread on Variable Rate		4.20%
Class E [Member] | 2012-2 CLO [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued		$ 16,300,000					$ 16,300,000
Term debt securitizations, net		$ 16,300,000
Interest rate		Libor+6.75%
Legal final maturity		Jan. 20, 2023
Class E [Member] | Two Thousand And Twelve Two Commercial Loan Trust [Member] | London Interbank Offered Rate (LIBOR) [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Basis Spread on Variable Rate		6.75%
Class E [Member] | 2013-1 CLO [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued		$ 6,000,000
Term debt securitizations, net		$ 6,000,000
Interest rate		Libor+5.30%
Legal final maturity		Sep. 20, 2023
Class E [Member] | Two Thousand And Thirteen One Commercial Loan Trust [Member] | London Interbank Offered Rate (LIBOR) [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Basis Spread on Variable Rate		5.30%
Class E [Member] | 2015-2 CLO [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued		$ 5,000,000
Term debt securitizations, net		$ 5,000,000
Interest rate		Libor+7.50%
Legal final maturity		Aug. 25, 2027
Class E [Member] | 2015-2 CLO [Member] | London Interbank Offered Rate (LIBOR) [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Basis Spread on Variable Rate		7.50%
Class E [Member] | Arch Street CLO [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued		$ 21,000,000
Term debt securitizations, net		$ 21,000,000
Interest rate		Libor+6.95%
Legal final maturity		Oct. 20, 2028
Class E [Member] | Arch Street CLO [Member] | London Interbank Offered Rate (LIBOR) [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Basis Spread on Variable Rate		6.95%
Class A-T [Member] | 2013-1 CLO [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued		$ 202,600,000
Term debt securitizations, net		$ 188,349,000
Interest rate		Libor+1.65%
Legal final maturity		Sep. 20, 2023
Class A-T [Member] | Two Thousand And Thirteen One Commercial Loan Trust [Member] | London Interbank Offered Rate (LIBOR) [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Basis Spread on Variable Rate		1.65%
Class A-R [Member] | 2013-1 CLO [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued		$ 35,000,000
Term debt securitizations, net		$ 32,538,000
Legal final maturity		Sep. 20, 2023
Class B-1 [Member] | 2014-1 CLO [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued		$ 20,000,000
Term debt securitizations, net		$ 20,000,000
Interest rate		Libor+2.60%
Legal final maturity		Apr. 20, 2025
Class B-2 [Member] | 2014-1 CLO [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued		$ 13,250,000
Term debt securitizations, net		$ 13,250,000
Legal final maturity		Apr. 20, 2025
Accrue interest at fixed rate		4.902%
CLO Class B-1 [Member] | 2014-1 CLO [Member] | London Interbank Offered Rate (LIBOR) [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Basis Spread on Variable Rate		2.60%
Class A-1 [Member] | 2015-1 CLO [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued		$ 253,500,000
Term debt securitizations, net		$ 253,500,000
Interest rate		Libor+1.80%
Basis Spread on Variable Rate		1.80%
Legal final maturity		Jan. 20, 2027
Class A-1 [Member] | 2015-2 CLO [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued		$ 205,000,000
Term debt securitizations, net		$ 205,000,000
Interest rate		Libor+2.00%
Legal final maturity		Aug. 25, 2027
Class A-1 [Member] | 2015-2 CLO [Member] | London Interbank Offered Rate (LIBOR) [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Basis Spread on Variable Rate		2.00%
Class A-1 [Member] | 2016-1 CLO [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued		$ 176,500,000
Term debt securitizations, net		$ 176,500,000
Interest rate		Libor+2.30%
Legal final maturity		Feb. 25, 2028
Class A-1 [Member] | 2016-1 CLO [Member] | London Interbank Offered Rate (LIBOR) [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Basis Spread on Variable Rate		2.30%
Class A-2 [Member] | 2015-1 CLO [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued		$ 35,000,000
Term debt securitizations, net		$ 35,000,000
Legal final maturity		Jan. 20, 2027
Class A-2 [Member] | 2015-1 CLO [Member] | London Interbank Offered Rate (LIBOR) [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Basis Spread on Variable Rate		1.65%
Class A-2 [Member] | 2015-1 CLO [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%
Class A-2 [Member] | 2015-2 CLO [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued		$ 23,000,000
Term debt securitizations, net		$ 23,000,000
Legal final maturity		Aug. 25, 2027
Accrue interest at fixed rate		3.461%
Class A-2 [Member] | 2016-1 CLO [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued		$ 20,000,000
Term debt securitizations, net		$ 20,000,000
Legal final maturity		Feb. 25, 2028
Accrue interest at fixed rate		3.44%
Class X [Member] | Arch Street CLO [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Notes originally issued		$ 2,500,000
Term debt securitizations, net		$ 2,500,000
Interest rate		Libor+1.25%
Legal final maturity		Oct. 20, 2028
Class X [Member] | Arch Street CLO [Member] | London Interbank Offered Rate (LIBOR) [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Basis Spread on Variable Rate		1.25%

Borrowings - Corporate Credit F

Borrowings - Corporate Credit Facility - Additional Information 1 (Detail)	Jun. 03, 2013USD ($)borrowing	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)
Line of Credit Facility [Line Items]
Outstanding balance of credit facility		$ 445,493,000	$ 832,686,000
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

Borrowings - Summary of Debt Ma

Borrowings - Summary of Debt Maturities (Detail) $ in Thousands	Dec. 31, 2016USD ($)
Line of Credit Facility [Line Items]
2,020	$ 834,300
Thereafter	2,515,840
Total	3,350,140
Credit Facility [Member]
Line of Credit Facility [Line Items]
2,020	454,300
Total	454,300
Term Debt [Member]
Line of Credit Facility [Line Items]
Thereafter	2,215,840
Total	2,215,840
Senior Notes [Member]
Line of Credit Facility [Line Items]
2,020	380,000
Total	380,000
Subordinated Notes [Member]
Line of Credit Facility [Line Items]
Thereafter	300,000
Total	$ 300,000

Repurchase Agreements - Additio

Repurchase Agreements - Additional Information (Detail) - USD ($)	Aug. 29, 2016	Oct. 02, 2013	Jun. 07, 2011	Dec. 31, 2016
Deutsche Bank AG [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase agreements, outstanding at end of period				$ 0
Citigroup Global Markets [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase agreements, outstanding at end of period				31,300,000
JP Morgan Chase Bank [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase agreements, outstanding at end of period				22,000,000
Natixis Securities Americas LLC [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase agreements, outstanding at end of period				$ 1,700,000
Macquarie Bank Limited [Member] | Loans [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase agreements, outstanding at end of period	$ 10,700,000
Debt Instrument, Term (in years)	5 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
Financing arrangement, commercial mortgage loans sold redeemed	$ 68,000,000
Deferred financing costs, net	$ 300,000

Commitments - Summary of Future

Commitments - Summary of Future Minimum Lease Payments (Detail) $ in Thousands	Dec. 31, 2016USD ($)
Commitments And Contingencies Disclosure [Abstract]
2,017	$ 1,567
2,018	1,409
2,019	1,306
2,020	$ 576

Commitments - Additional Inform

Commitments - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Commitments [Line Items]
Rent Expense	$ 2.1	$ 2.2	$ 2
Massachusetts | Building [Member]
Commitments [Line Items]
Boston, MA Office Space Lease Termination date	Feb. 28, 2020

Stockholders' Equity - Schedule

Stockholders' Equity - Schedule of Authorized Capital (Detail) - shares	Dec. 31, 2016	Dec. 31, 2015
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	42,820,198	46,527,288

Stockholders' Equity - Addition

Stockholders' Equity - Additional Information (Detail)

Dec. 31, 2016USD ($)$ / sharesshares

Dec. 09, 2016USD ($)

Feb. 10, 2016USD ($)

Mar. 24, 2015USD ($)shares

Dec. 22, 2014USD ($)shares

Aug. 13, 2014USD ($)

Jul. 31, 2014$ / sharesshares

Dec. 01, 2010Installment$ / sharesshares

Nov. 01, 2010Installment$ / sharesshares

May 12, 2010Installment$ / sharesshares

Dec. 31, 2016USD ($)Installment$ / sharesshares

Dec. 31, 2015USD ($)$ / sharesshares

Dec. 31, 2014USD ($)Installment$ / sharesshares

Dec. 31, 2011Installment$ / sharesshares

Oct. 21, 2016shares

Oct. 07, 2015USD ($)

Jan. 23, 2015shares

Dec. 04, 2014$ / sharesshares

May 05, 2014USD ($)

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) | $ / shares

$ 0.01

$ 0.01

$ 0.01

Common stock authorized to repurchase (up to) | $

$ 30,000,000

$ 10,000,000

$ 5,000,000

$ 20,000,000

Repurchase of stock, shares

1,000,000

1,000,000

1,000,000

1,519,615

2,640,544

892,911

Repurchase program expiration date

Dec. 31, 2017

Dec. 31, 2016

Jul. 31, 2015

Repurchase of stock, value | $

$ 7,000,000

$ 10,300,000

$ 10,200,000

Stock repurchase remaining authorized amount | $

$ 4,900,000

Stock repurchase increased authorized amount | $

$ 30,000,000

Common stock authorized to repurchase (up to)

2,500,000

Restricted Stock [Member]

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

Shares issued to employees

523,903

91,360

Number of equal installments of granted restricted stock that will be made to employees | Installment

3

3

Award vesting period

3 years

3 years

Stock-based compensation expense | $

$ 3,700,000

$ 3,300,000

$ 2,500,000

Unrecognized compensation cost | $

2,300,000

$ 2,300,000

Weighted average recognition period for unrecognized compensation cost

3 years

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

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

Shares issued to employees

74,020

43,648

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 issued to employees

355,876

Restricted Stock [Member] | 2006 Incentive Plan [Member] | Director [Member]

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

Shares issued to employees

51,352

Options [Member]

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

Shares issued to employees

50,000

60,000

629,105

52,500

Number of equal installments of granted restricted stock that will be made to employees | Installment

2

2

3

3

Award vesting period

2 years

2 years

3 years

3 years

Stock-based compensation expense | $

$ 100,000

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

Option exercise price (in dollars per share) | $ / shares

$ 8.74

$ 7.52

$ 8.28

Life or expiration period of a stock-based award

7 years

7 years

7 years

7 years

Options [Member] | 2006 Incentive Plan [Member]

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

Shares issued to employees

55,000

Award vesting period

1 year

Life or expiration period of a stock-based award

7 years

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

2,500,000,000,000

9,500,000,000,000

Number of shares called by each warrant

1

Purchase price of common stock called by warrants (in dollars per share) | $ / shares

$ 12.62

Warrants expiration date

Dec. 4, 2024

Warrants and Rights Outstanding | $

$ 63,600,000

$ 63,600,000

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) | $ / shares

$ 13.13

$ 7.85

$ 11.20

Minimum [Member] | Options [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%

Option exercise price (in dollars per share) | $ / shares

$ 10.11

Maximum [Member] | Options [Member]

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

Option exercise price (in dollars per share) | $ / shares

$ 10.59

Stockholders' Equity - Schedu93

Stockholders' Equity - Schedule of Restricted Stock Activity (Detail) - Restricted Stock [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
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	496,704	315,338
Shares, Granted	597,923	407,228
Shares, Vested	(250,846)	(219,802)
Shares, Forfeited	(2,947)	(6,060)
Shares, Non-vested, Ending balance	840,834	496,704
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	$ 5,629	$ 4,091
Weighted average grant-date fair value, Granted	3,835	4,322
Weighted average grant-date fair value, Vested	(2,876)	(2,710)
Weighted average grant-date fair value, Forfeited	(24)	(74)
Weighted average grant-date fair value, Non-vested, Ending balance	$ 6,564	$ 5,629

Stockholders' Equity - Schedu94

Stockholders' Equity - Schedule of Stock Option Activity (Detail) - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Options Outstanding, Beginning balance	2,513,532	4,628,439
Options Granted	0	0
Options Exercised	(1,761,926)	(2,092,092)
Options Forfeited	(329,914)	(22,815)
Options Outstanding, Ending Balance	421,692	2,513,532	4,628,439
Options Vested and exercisable as of December 31, 2016	421,692
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Weighted average exercise price Beginning balance (in dollars per share)	$ 5.75	$ 5
Weighted average exercise price Exercised (in dollars per share)	3.04	3.22
Weighted average exercise price Forfeited (in dollars per share)	16.37	14.02
Weighted average exercise price Ending balance (in dollars per share)	8.72	$ 5.75	$ 5
Weighted average exercise price Vested and exercisable as of December 31, 2016	$ 8.72
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Weighted average remaining contractual life (in years)	1 year	1 year	2 years
Weighted average remaining contractual life (in years) granted	0 years	0 years
Weighted average remaining contractual life (in years) exercised	0 years	0 years
Weighted average remaining contractual life (in years) forfeited	0 years	1 year
Weighted average remaining contractual life (in years) Vested and exercisable as of December 31, 2016	1 year

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								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Dilutive and Antidilutive Securities Associated with Computation of Earnings Per Share [Line Items]
Net income	$ 10,330	$ 8,644	$ 5,241	$ 4,009	$ 4,209	$ 5,142	$ 5,000	$ 2,539	$ 28,224	$ 16,890	$ 10,594
Net income allocated to participating securities - basic and diluted									490	182	72
Net income allocated to common shareholders - basic and diluted									$ 27,734	$ 16,708	$ 10,522
Denominator for basic earnings per common share									45,592	45,631	48,267
Total weighted average diluted shares									45,618	47,535	51,575
Basic	$ 0.23	$ 0.19	$ 0.11	$ 0.09	$ 0.09	$ 0.11	$ 0.11	$ 0.05	$ 0.61	$ 0.37	$ 0.22
Diluted	$ 0.23	$ 0.19	$ 0.11	$ 0.09	$ 0.09	$ 0.11	$ 0.10	$ 0.05	$ 0.61	$ 0.35	$ 0.21
Options [Member]
Dilutive and Antidilutive Securities Associated with Computation of Earnings Per Share [Line Items]
Potentially dilutive securities-options (in shares)									26	1,904	3,229
Warrants [Member]
Dilutive and Antidilutive Securities Associated with Computation of Earnings Per Share [Line Items]
Potentially dilutive securities-options (in shares)											79

Earnings Per Share - Additional

Earnings Per Share - Additional Information (Detail) - shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 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 Entity - Addi

Variable Interest Entity - Additional Information (Detail)

Jun. 26, 2014USD ($)

Nov. 30, 2016USD ($)

Jan. 31, 2015USD ($)

Dec. 31, 2016USD ($)

Sep. 30, 2016USD ($)

Jun. 30, 2016USD ($)

Mar. 31, 2016USD ($)

Dec. 31, 2015USD ($)

Sep. 30, 2015USD ($)

Jun. 30, 2015USD ($)

Mar. 31, 2015USD ($)

Dec. 31, 2016USD ($)

Dec. 31, 2015USD ($)

Dec. 31, 2014USD ($)

Dec. 31, 2013USD ($)

Oct. 31, 2015LoansFund

Jun. 30, 2014USD ($)

Apr. 04, 2013USD ($)

Variable Interest Entity [Line Items]

Interest expense

$ 43,529,000

$ 39,897,000

$ 38,486,000

$ 39,433,000

$ 36,222,000

$ 31,345,000

$ 31,085,000

$ 22,334,000

$ 161,345,000

$ 120,986,000

$ 57,775,000

Fund excess cash distributed to institutional investor

700,000

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

$ 500,000

Interest expense

$ 2,865,000

Feingold O’Keeffe Capital, LLC [Member]

Variable Interest Entity [Line Items]

Number of collateralized loan obligation | Loans

6

Business acquisition date

2015-10

Feingold O’Keeffe Capital, LLC [Member] | Sponsored Funds [Member]

Variable Interest Entity [Line Items]

Number of sponsored funds | Fund

2

Variable interest on secured value sponsored fund

1.00%

NewStar Clarendon Fund CLO LLC [Member]

Variable Interest Entity [Line Items]

Term debt securitization

$ 400,000,000

Each class of note securitization amount, total

$ 20,400,000

Percentage of each class of note securitization

5.00%

NewStar Berkeley Fund CLO LLC [Member]

Variable Interest Entity [Line Items]

Term debt securitization

$ 505,000,000

Each class of note securitization amount, total

$ 25,300,000

Percentage of each class of note securitization

5.00%

Variable Interest Entity - Unco

Variable Interest Entity - Unconsolidated Variable Interest Entities (Details) - USD ($)	Dec. 31, 2016	Dec. 31, 2015
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Unconsolidated VIE assets	$ 912,900,000	$ 483,581,000
Unconsolidated VIE liabilities	810,030,000	362,383,000
Equity interest included on the Consolidated Balance Sheet	50,386,000	23,910,000
Maximum risk of loss	$ 50,794,000	$ 24,327,000

Financial Instruments with Of99

Financial Instruments with Off-Balance Sheet Risk - Additional Information (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Unused Lines of Credit [Member]
Concentration Risk [Line Items]
Financial instruments with off-balance sheet risk	$ 326,051	$ 601,805
Revolving Credit Facility [Member]
Concentration Risk [Line Items]
Unfunded commitments	257,500
Delayed Draw Term Loans [Member]
Concentration Risk [Line Items]
Unfunded commitments	$ 68,600

Financial Instruments with O100

Financial Instruments with Off-Balance Sheet Risk - Financial Instruments with Off-Balance Sheet Risk (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Unused Lines of Credit [Member]
Concentration Risk [Line Items]
Financial instruments with off-balance sheet risk	$ 326,051	$ 601,805
Standby Letters of Credit [Member]
Concentration Risk [Line Items]
Financial instruments with off-balance sheet risk	$ 8,239	$ 8,696

Total Return Swap - Additional

Total Return Swap - Additional Information (Detail) - USD ($)	Jul. 14, 2015	Mar. 02, 2015	Dec. 04, 2014	Dec. 31, 2016	Dec. 31, 2015	Mar. 31, 2016
Derivative [Line Items]
Cash collateral on deposit with custodians				$ 7,564,000	$ 61,081,000
Total Return Swap [Member]
Derivative [Line Items]
Derivative termination date				Mar. 31, 2016
Maximum market value of portfolio of loans	$ 175,000,000	$ 150,000,000	$ 75,000,000
Interest income from TRS portfolio				$ 2,200,000	8,667,000
TRS interest expense				800,000	2,652,000
Realized loss on TRS				(6,100,000)	(4,822,000)
Fair value of TRS					155,600,000
Total Return Swap [Member] | Citibank [Member]
Derivative [Line Items]
Cash collateral on deposit with custodians				$ 0	$ 56,500,000
Interest rate description				one-month LIBOR plus 1.60% per annum
Total Return Swap [Member] | Citibank [Member] | London Interbank Offered Rate (LIBOR) [Member]
Derivative [Line Items]
Basis spread on variable rate (percent)				1.60%
Total Return Swap [Member] | CLO's [Member]
Derivative [Line Items]
Purchase Price of Loan						$ 138,900,000

Total Return Swap - Schedule of

Total Return Swap - Schedule of Receivable and Realized Loss on Total Return Swap (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Derivative [Line Items]
TRS receivable	$ 14,622	$ 13,932
Total Return Swap [Member]
Derivative [Line Items]
Realized loss on TRS		(5,816)
TRS receivable		1,377
Interest income from TRS portfolio	2,200	8,667
TRS interest expense	800	2,652
Realized loss on TRS	$ (6,100)	$ (4,822)

Income Taxes - Summary of Incom

Income Taxes - Summary of Income Tax Expense (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Current tax expense:
Federal									$ 25,300	$ 8,613	$ 3,245
State									4,475	4,006	1,667
Total current									29,775	12,619	4,912
Deferred tax expense (benefit):
Federal									(9,883)	426	2,440
State									535	(1,094)	133
Total deferred									(9,348)	(668)	2,573
Income tax expense	$ 8,044	$ 5,941	$ 3,561	$ 2,881	$ 2,931	$ 3,665	$ 3,563	$ 1,792	$ 20,427	$ 11,951	$ 7,485

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Statutory federal corporate rate	35.00%	35.00%	35.00%
Net deferred tax assets	$ 40,807	$ 33,133

Income Taxes - Summary of Effec

Income Taxes - Summary of Effective Tax Rate (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Federal statutory rate									$ 17,028	$ 10,094	$ 6,328
State income taxes, net of federal tax benefit									3,256	1,893	1,170
Other									143	(36)	(13)
Income tax expense	$ 8,044	$ 5,941	$ 3,561	$ 2,881	$ 2,931	$ 3,665	$ 3,563	$ 1,792	$ 20,427	$ 11,951	$ 7,485

Income Taxes - Summary of Compo

Income Taxes - Summary of Components of Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Deferred tax asset:
Allowance for credit losses	$ 23,353	$ 29,105
Capitalized startup costs		103
Other	4,243	1,483
Securities fair value adjustments	2,491	4,166
Equity compensation	2,505	6,950
Accrued bonus and severance	6,886	6,728
Income from non-performing assets	4,329	4,325
Equity positions	1,272
Other real estate owned	73
Intangible Assets	293	196
Gross deferred tax asset	45,445	53,056
Deferred tax liability:
Prepaid expenses	1,091	1,226
Mark-to-market loans	294	420
Deferred loan costs	1,488	1,971
Cancellation of term debt income	1,185	1,778
Equity positions		2,498
Equipment leasing		11,113
Goodwill	580	917
Gross deferred tax liability	4,638	19,923
Net deferred tax asset	$ 40,807	$ 33,133

Fair Value - Additional Informa

Fair Value - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gain from change in fair value	$ 5,500,000
Interest receivable	14,622,000	$ 13,932,000
Realized (loss) gain on sale of loans, net	(2,095,000)	467,000	$ (230,000)
Assets fair value write down expenses	300,000
Non-public investments carrying value within other assets	16,000,000	14,300,000
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 collateral dependent impaired loans	4,300,000	300,000
Provision for credit losses charged off	4,200,000
Finance Receivables Loans Held For Sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Realized (loss) gain on sale of loans, net	$ 2,400,000	2,600,000
Total Return Swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
TRS		(4,400,000)
Interest receivable		1,377,000
Unrealized Gain (Loss) on Derivatives		5,816,000
Maximum [Member] | Total Return Swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notional amount		$ 175,000,000

Fair Value - Assets and Liabili

Fair Value - Assets and Liabilities Measured at Fair Value on Recurring and Nonrecurring Basis (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments in debt securities, available-for-sale	$ 119,307	$ 94,177
Loans	3,241,910	3,147,117
Loans, held-for-sale	145,406	483,781
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, held-for-sale	69,875	483,781
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	3,241,910	3,147,117
Loans, held-for-sale	75,531
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	119,307	94,177
Loans	403,745
Total assets recorded at fair value on a recurring basis	523,052	94,177
Contingent consideration liability	1,350
Total liabilities recorded at fair value on a recurring basis	1,350	4,439
TRS		4,439
Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	403,745
Total assets recorded at fair value on a recurring basis	403,745
Total liabilities recorded at fair value on a recurring basis		4,439
TRS		4,439
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	119,307	94,177
Total assets recorded at fair value on a recurring basis	119,307	94,177
Contingent consideration liability	1,350
Total liabilities recorded at fair value on a recurring basis	1,350
Nonrecurring Basis [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans		27,473
Loans, held-for-sale	145,406	140,151
Other real estate owned/repossessed assets	15,750	250
Total assets recorded at fair value on a nonrecurring basis	161,156	167,874
Nonrecurring Basis [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans, held-for-sale	69,875	140,151
Total assets recorded at fair value on a nonrecurring basis	69,875	140,151
Nonrecurring Basis [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans		27,473
Loans, held-for-sale	75,531
Other real estate owned/repossessed assets	15,750	250
Total assets recorded at fair value on a nonrecurring basis	$ 91,281	$ 27,723

Fair Value - Summary of Signifi

Fair Value - Summary of Significant Unobservable Inputs and Valuation Techniques (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value financial assets	$ 210,588	$ 121,900
Fair value financial liabilities	1,350
Contingent Liability [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value financial liabilities	1,350
Loans Receivable [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value financial assets	$ 75,531	$ 27,473
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%
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%
Other Real Estate Owned/Repossessed Assets [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value financial assets	$ 15,750	$ 250
Other Real Estate Owned/Repossessed Assets [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%
Fair value discount rate range - marketability discount (as a percent)		5.00%
Other Real Estate Owned/Repossessed Assets [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%
Fair value discount rate range - marketability discount (as a percent)		30.00%
Investments in Debt Securities, Available-for-Sale [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value financial assets	$ 119,307	$ 94,177	$ 46,881

Fair Value - Reconciliation of

Fair Value - Reconciliation of Financial Instruments Measured on Recurring Basis and Classified as Level 3 Inputs (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment in Debt Securities - Available for sale, beginning balance	$ 121,900
Investment in Debt Securities - Available for sale, ending balance	210,588	$ 121,900
Contingent Liability, ending balance	1,350
Investments in Debt Securities, Available-for-Sale [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investment in Debt Securities - Available for sale, beginning balance	94,177	46,881
Included in earnings	875	791
Included in other comprehensive income	3,942	(10,097)
Purchases	26,313	89,602
Settlements	(6,000)	(33,000)
Investment in Debt Securities - Available for sale, ending balance	119,307	$ 94,177
Contingent Liability [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Initial recognition	1,350
Contingent Liability, ending balance	$ 1,350

Fair Value - Carrying Amounts a

Fair Value - Carrying Amounts and Estimated Fair Values of Company's Financial Instruments (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	$ 154,480	$ 35,933	$ 33,033	$ 43,401
Restricted cash	262,643	153,992
Cash collateral on deposit with custodians	7,564	61,081
Investments in debt securities, available-for-sale	119,307	94,177
Loans and leases, net	3,239,191	3,134,072
Loans held-for-sale	144,060	478,785
Other assets, Carrying amount	15,954	14,255
Credit facilities	445,493	832,686
Term debt securitizations, net	2,195,064	1,821,519
Repurchase agreements	55,046	96,224
Senior notes	373,919	372,153
Subordinated notes	241,390	209,509
Other liabilities, Carrying amount	1,350	4,439
Loans and leases, net, Fair value	3,241,910	3,147,117
Loans held-for-sale, Fair value	145,406	483,781
Other assets, Fair value	15,954	14,255
Credit facilities, Fair value	445,493	832,686
Fair value of loans acquired	2,230,102	1,819,344
Repurchase agreements, Fair value	55,046	101,433
Senior notes, Fair value	380,000	368,600
Subordinated notes, Fair value	303,916	266,857
Other liabilities, Fair value	1,350	4,439
Consolidated Entities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	154,480	35,933
Restricted cash	262,643	153,992
Cash collateral on deposit with custodians	7,564	61,081
Investments in debt securities, available-for-sale	119,307	94,177
Loans and leases, net	3,239,191	3,134,072
Loans held-for-sale	144,060	478,785
Other assets, Carrying amount	15,954	14,255
Credit facilities	445,493	832,686
Term debt securitizations, net	2,195,064	1,821,519
Repurchase agreements	55,046	96,224
Senior notes	373,919	372,153
Subordinated notes	241,390	209,509
Other liabilities, Carrying amount	1,350	4,439
Cash and cash equivalents, Fair value	154,480	35,933
Restricted cash, Fair value	262,643	153,992
Cash collateral on deposit with custodian, Fair value	7,564	61,081
Loans and leases, net, Fair value	3,241,910	3,147,117
Loans held-for-sale, Fair value	145,406	483,781
Other assets, Fair value	15,954	14,255
Credit facilities, Fair value	445,493	832,686
Fair value of loans acquired	2,230,102	1,819,344
Repurchase agreements, Fair value	55,046	101,433
Senior notes, Fair value	380,000	368,600
Subordinated notes, Fair value	303,916	266,857
Other liabilities, Fair value	$ 1,350	$ 4,439

Fair Value - Carrying Amounts,

Fair Value - Carrying Amounts, Estimated Fair Values and Placement in Fair Value Hierarchy of Financial Instruments (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans and leases, net	$ 3,239,191	$ 3,134,072
Loans held-for-sale	144,060	478,785
Other assets, Carrying amount	15,954	14,255
Credit facilities	445,493	832,686
Outstanding balance on drawn notes	2,195,064	1,821,519
Repurchase agreements	55,046	96,224
Senior notes	373,919	372,153
Subordinated notes	241,390	209,509
Other liabilities, Carrying amount	1,350	4,439
Loans and leases, net, Fair value	3,241,910	3,147,117
Loans held-for-sale, Fair value	145,406	483,781
Other assets, Fair value	15,954	14,255
Credit facilities, Fair value	445,493	832,686
Fair value of loans acquired	2,230,102	1,819,344
Repurchase agreements, Fair value	55,046	101,433
Senior notes, Fair value	380,000	368,600
Subordinated notes, Fair value	303,916	266,857
Other liabilities, Fair value	1,350	4,439
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held-for-sale, Fair value	69,875	483,781
Credit facilities, Fair value	445,493	832,686
Fair value of loans acquired	2,230,102	1,819,344
Repurchase agreements, Fair value	55,046	101,433
Senior notes, Fair value	380,000	368,600
Other liabilities, Fair value		4,439
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans and leases, net, Fair value	3,241,910	3,147,117
Loans held-for-sale, Fair value	75,531
Other assets, Fair value	15,954	14,255
Subordinated notes, Fair value	303,916	266,857
Other liabilities, Fair value	1,350
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	$ 3,239,191	$ 3,134,072

Employee Benefit Plans - Additi

Employee Benefit Plans - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
General Discussion Of Pension And Other Postretirement Benefits [Abstract]
Employee's voluntary contributions	100.00%
Max percentage of employee matched by employer at 100%	6.00%
Employer match amount	$ 0.7	$ 0.8	$ 0.7

Segment Reporting - Additional

Segment Reporting - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2016USD ($)Segment
Segment Reporting Information [Line Items]
Number of reportable segments | Segment	2
Minimum [Member] | Commercial Lending Segment [Member]
Segment Reporting Information [Line Items]
Annual cash flow (EBITDA) of companies financed through specialized lending groups	$ 15,000,000
Maximum [Member] | Commercial Lending Segment [Member]
Segment Reporting Information [Line Items]
Annual cash flow (EBITDA) of companies financed through specialized lending groups	$ 50,000,000

Segment Reporting - Summary of

Segment Reporting - Summary of Total Assets and Statement of Operations (Detail) - USD ($) $ in Thousands		3 Months Ended								12 Months Ended
		Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016		Dec. 31, 2015	Dec. 31, 2014
Segment Reporting Information [Line Items]
Net interest income (loss)										$ 89,371		$ 80,799	$ 79,507
Provision for loan losses		$ 2,635	$ 3,570	$ 3,623	$ 17,713	$ 3,667	$ 4,534	$ 3,208	$ 6,978	27,541		18,387	27,108
Net interest income after provision										61,830		62,412	52,399
Non-interest income:
Management fees										11,665		6,661	1,054
Performance fees										1,734
Other lending fees										7,278		13,508	2,467
Gain/(loss) on sale of loans and equipment										(1,291)		1,108	(201)
Other noninterest income (loss)										34,874	[1]	(2,920)	8,125
Total noninterest income										54,260		18,357	11,445
Non-interest expense										67,439		51,928	45,765
Income before income taxes		18,374	14,585	8,802	6,890	7,140	8,807	8,563	4,331	48,651		28,841	18,079
Income tax expense		8,044	5,941	3,561	2,881	2,931	3,665	3,563	1,792	20,427		11,951	7,485
Net income		10,330	$ 8,644	$ 5,241	$ 4,009	4,209	$ 5,142	$ 5,000	$ 2,539	28,224		16,890	10,594
Loans and leases, gross		3,319,550				3,243,580				3,319,550		3,243,580
Loans held-for-sale, gross		145,966				485,874				145,966		485,874
Investments in debt securities, available-for-sale		119,307				94,177				119,307		94,177
Other		455,769				227,752				455,769		227,752
Total assets		4,040,592				4,051,383				4,040,592		4,051,383
Illiquid Credit funds	[2]	1,314,690				824,573				1,314,690		824,573
Liquid/Tradeable Credit	[2]	1,833,607				2,294,497				1,833,607		2,294,497
Total Assets		7,188,889				7,170,453				7,188,889		7,170,453
Non Managed assets	[3]	449,026				220,987				449,026		220,987
Total Managed Assets		6,739,863				6,949,466				6,739,863		6,949,466
Commercial Lending Segment [Member]
Segment Reporting Information [Line Items]
Net interest income (loss)										84,454		81,005	83,663
Provision for loan losses										27,541		18,387	27,108
Net interest income after provision										56,913		62,618	56,555
Non-interest income:
Other lending fees										7,141		13,508	2,466
Gain/(loss) on sale of loans and equipment										(1,598)		1,108	(201)
Other noninterest income (loss)										29,298	[1]	(2,982)	8,585
Total noninterest income										34,841		11,634	10,850
Non-interest expense										55,177		46,873	45,363
Income before income taxes										36,577		27,379	22,042
Loans and leases, gross		2,915,805				3,243,580				2,915,805		3,243,580
Loans held-for-sale, gross		145,966				485,874				145,966		485,874
Other		374,851				205,256				374,851		205,256
Total assets		3,436,622				3,934,710				3,436,622		3,934,710
Total Assets		3,436,622				3,934,710				3,436,622		3,934,710
Non Managed assets	[3]	374,851				205,256				374,851		205,256
Total Managed Assets		3,061,771				3,729,454				3,061,771		3,729,454
Asset Management Segment
Segment Reporting Information [Line Items]
Net interest income (loss)										4,917		(206)	(4,156)
Net interest income after provision										4,917		(206)	(4,156)
Non-interest income:
Management fees										11,665		6,661	1,054
Performance fees										1,734
Other lending fees										137			1
Gain/(loss) on sale of loans and equipment										307
Other noninterest income (loss)										5,576	[1]	62	(460)
Total noninterest income										19,419		6,723	595
Non-interest expense										12,262		5,055	402
Income before income taxes										12,074		1,462	$ (3,963)
Loans and leases, gross		403,745								403,745
Investments in debt securities, available-for-sale		119,307				94,177				119,307		94,177
Other		80,918				22,496				80,918		22,496
Total assets		603,970				116,673				603,970		116,673
Illiquid Credit funds	[2]	1,314,690				824,573				1,314,690		824,573
Liquid/Tradeable Credit	[2]	1,833,607				2,294,497				1,833,607		2,294,497
Total Assets		3,752,267				3,235,743				3,752,267		3,235,743
Non Managed assets	[3]	74,175				15,731				74,175		15,731
Total Managed Assets		$ 3,678,092				$ 3,220,012				$ 3,678,092		$ 3,220,012
[1]	Includes fair value adjustment on Loans held-for-sale.
[2]	Assets managed by the Company for the Illiquid Credit and Liquid/Tradeable Credit Funds are not assets of the Company and are not included in the Consolidated Total Assets as reflected in the Condensed Consolidated Balance Sheet.
[3]	Other less unamortized discount on investment in debt securities, available-for-sale.

Segment Reporting - Summary 116

Segment Reporting - Summary of Total Assets and Statement of Operations (Parenthetical) (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Segment Reporting [Abstract]
Loans at fair value	$ 403,745	$ 0

Related-Party Transactions - Ad

Related-Party Transactions - Additional Information (Detail) - USD ($)	Dec. 31, 2016	Mar. 24, 2015	Dec. 22, 2014	Jul. 31, 2014	Oct. 31, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Nov. 30, 2016	Jan. 15, 2015
Related Party Transaction [Line Items]
Asset management income						$ 13,399,000	$ 6,661,000	$ 1,054,000
Repurchase of stock, shares	1,000,000	1,000,000	1,000,000	1,519,615		2,640,544		892,911
Repurchase of stock, value	$ 7,000,000	$ 10,300,000	$ 10,200,000
NewStar Credit Opportunities Fund, Ltd. [Member] | Investment Management Agreement [Member]
Related Party Transaction [Line Items]
Asset management income						$ 60,000	50,000
Arlington Program [Member] | Collateral Management Agreement [Member]
Related Party Transaction [Line Items]
Revenue receivable from transactions with related party						2,000,000	2,000,000
NewStar Clarendon Fund CLO LLC [Member] | Collateral Management Agreement [Member]
Related Party Transaction [Line Items]
Revenue receivable from transactions with related party						$ 2,000,000	$ 2,000,000
NewStar Clarendon Fund CLO LLC [Member] | Term Debt Securitization [Member]
Related Party Transaction [Line Items]
Balance of fund closed										$ 400,000,000
Related party transaction, investment held, percentage										5.00%
Related party transaction, investment held, amount										$ 20,400,000
NewStar Berkeley Fund CLO LLC [Member] | Term Debt Securitization [Member]
Related Party Transaction [Line Items]
Balance of fund closed									$ 505,000,000
Related party transaction, investment held, percentage									5.00%
Related party transaction, investment held, amount									$ 25,300,000
Capital Z Financial Services Fund II, L.P. [Member]
Related Party Transaction [Line Items]
Repurchase of stock, shares					2,000,000
Repurchase of stock, value					$ 17,860,000
Former Executive Officer [Member]
Related Party Transaction [Line Items]
Repurchase of stock, shares					500,000
Repurchase of stock, value					$ 4,465,000

Selected Quarterly Financial118

Selected Quarterly Financial Data (Unaudited) - Summary of Unaudited Quarterly Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract]
Interest income	$ 64,217	$ 65,155	$ 59,392	$ 61,952	$ 60,591	$ 54,574	$ 46,871	$ 39,749	$ 250,716	$ 201,785	$ 136,171
Interest expense	43,529	39,897	38,486	39,433	36,222	31,345	31,085	22,334	161,345	120,986	57,775
Net interest income	20,688	25,258	20,906	22,519	24,369	23,229	15,786	17,415	89,371	80,799	78,396
Provision for credit losses	2,635	3,570	3,623	17,713	3,667	4,534	3,208	6,978	27,541	18,387	27,108
Net interest income after provision for credit losses	18,053	21,688	17,283	4,806	20,702	18,695	12,578	10,437	61,830	62,412	51,288
Total non-interest income	19,783	10,966	4,359	19,152	3,310	3,492	7,429	4,126
Operating expenses	19,462	18,069	12,840	17,068	16,872	13,380	11,444	10,232	67,439	51,928	45,516
Income before income taxes	18,374	14,585	8,802	6,890	7,140	8,807	8,563	4,331	48,651	28,841	18,079
Income tax expense	8,044	5,941	3,561	2,881	2,931	3,665	3,563	1,792	20,427	11,951	7,485
Net income	$ 10,330	$ 8,644	$ 5,241	$ 4,009	$ 4,209	$ 5,142	$ 5,000	$ 2,539	$ 28,224	$ 16,890	$ 10,594
Net income per share:
Basic	$ 0.23	$ 0.19	$ 0.11	$ 0.09	$ 0.09	$ 0.11	$ 0.11	$ 0.05	$ 0.61	$ 0.37	$ 0.22
Diluted	$ 0.23	$ 0.19	$ 0.11	$ 0.09	$ 0.09	$ 0.11	$ 0.10	$ 0.05	$ 0.61	$ 0.35	$ 0.21

Subsequent Events - Additional

Subsequent Events - Additional Information (Detail) - Subsequent Event [Member]	Feb. 14, 2017$ / shares
Subsequent Event [Line Items]
Cash dividend, per share	$ 0.02
Date of payment of cash dividend to stockholders	Mar. 17, 2017
Date of record of cash dividend expected to be paid to stockholders	Mar. 2, 2017