Slicers (applies to each fact value in each table cell)

Reporting Entity [Axis]

0001386926 (http://www.sec.gov/CIK)

Debt Disclosure [Abstract]	Period [Axis]
	2016-01-01 - 2016-12-31
Debt Disclosure [Abstract]
Schedule of Company's borrowings	Certain information with respect to the Company’s borrowings as of December 31, 2016 is summarized in the following table (dollar amounts in thousands):     Par   Carrying Value(1)   Weighted Average Borrowing Rate   Weighted Average Remaining Maturity (in days)   Collateral(2) CLO 2012-1 secured notes $ 367,500   $ 378,978   3.01 %   2906   $ 333,931 CLO 2012-1 subordinated notes(3) 18,000   9,613   15.40   2906   16,356 CLO 2012-1 subordinated notes to affiliates(3) 19,663   10,501   —   2906   17,867 CLO 2013-1 secured notes 458,500   470,354   2.59   3118   450,836 CLO 2013-1 subordinated notes to affiliates(3) 23,063   14,970   —   3118   22,678 CLO 2013-2 secured notes 339,250   343,208   2.88   3310   323,644 CLO 2013-2 subordinated notes to affiliates(3) 30,959   19,074   —   3310   29,535 CLO 9 secured notes 463,750   471,824   2.89   3575   437,048 CLO 9 subordinated notes(3) 15,000   10,170   15.58   3575   14,136 CLO 9 subordinated notes to affiliates(3) 33,400   22,646   6.11   3575   31,477 CLO 10 secured notes 368,000   377,369   3.18   3271   356,393 CLO 10 subordinated notes to affiliates(3) 39,146   22,416   7.53   3271   37,912 CLO 15 secured notes 370,500   370,632   3.06   4309   376,971 CLO 15 subordinated notes(3) 12,100   11,430   —   4309   12,311 CLO 16 secured notes 644,300   640,386   3.16   4403   596,916 CLO 16 subordinated notes(3) 4,500   3,977   —   4403   4,169 Total collateralized loan obligation secured debt 3,207,631   3,177,548         3,062,180 CLO warehouse facility(4) 20,000   20,000   2.25   305   101,976 7.500% Senior notes 115,043   123,008   7.50   9210   — Junior subordinated notes 283,517   250,154   3.34   7218   — Total borrowings $ 3,626,191   $ 3,570,710           $ 3,164,156 (1) Carrying value represents estimated fair value for the collateralized loan obligation secured debt and amortized cost for all other borrowings. (2) Collateral for borrowings consists of the estimated fair value of certain corporate loans, securities and equity investments at estimated fair value. For purposes of this table, collateral for CLO secured and subordinated notes are calculated pro rata based on the par amount for each respective CLO. (3) Subordinated notes to unaffiliated and affiliated parties do not have a contractual coupon rate, but instead receive a pro rata amount of the net distributions from each respective CLO. Accordingly, weighted average borrowing rates for the subordinated notes were calculated based on cash distributions during the year, if any. (4) Represents a $200.0 million CLO warehouse facility. Certain information with respect to the Company’s borrowings as of December 31, 2015 is summarized in the following table (dollar amounts in thousands):   Par   Carrying Value(1)   Weighted Average Borrowing Rate   Weighted Average Remaining Maturity (in days)   Collateral(2) CLO 2007-1 secured notes $ 1,544,032   $ 1,630,293   2.10 %   1962   $ 1,732,855 CLO 2007-1 subordinated notes(3) 134,468   74,954   11.66   1962   150,912 CLO 2007-A subordinated notes(3) 15,096   17,060   14.49   654   48,856 CLO 2011-1 senior debt 249,301   249,301   1.67   1689   310,498 CLO 2012-1 secured notes 367,500   365,383   2.59   3272   361,684 CLO 2012-1 subordinated notes(3) 18,000   10,845   15.82   3272   17,715 CLO 2013-1 secured notes 458,500   450,280   2.05   3484   479,391 CLO 2013-2 secured notes 339,250   334,187   2.52   3676   347,989 CLO 9 secured notes 463,750   454,103   2.33   3941   463,574 CLO 9 subordinated notes(3) 15,000   9,972   15.92   3941   14,994 CLO 10 secured notes 368,000   363,977   2.75   3637   384,991 CLO 11 secured notes 507,750   491,699   2.38   4123   501,286 CLO 11 subordinated notes(3) 28,250   23,306   5.28   4123   27,890 CLO 13 secured notes 370,000   364,986   2.84   4399   323,781 CLO 13 subordinated notes(3) 4,000   3,400   —   4399   3,500 Total collateralized loan obligation secured debt 4,882,897   4,843,746           5,169,916 8.375% Senior notes 258,750   289,660   8.38   9451   — 7.500% Senior notes 115,043   123,346   7.50   9576   — Junior subordinated notes 283,517   248,498   5.43   7584   — Total borrowings $ 5,540,207   $ 5,505,250           $ 5,169,916 (1) Carrying value represents estimated fair value for the collateralized loan obligation secured debt and amortized cost for all other borrowings. (2) Collateral for borrowings consists of the estimated fair value of certain corporate loans, securities and equity investments at estimated fair value. For purposes of this table, collateral for CLO senior, mezzanine and subordinated notes are calculated pro rata based on the par amount for each respective CLO. (3) Subordinated notes do not have a contractual coupon rate, but instead receive a pro rata amount of the net distributions from each respective CLO. Accordingly, weighted average borrowing rates for the subordinated notes were calculated based on annualized distributions during the year, if any.
Schedule of Company's contractual obligations (excluding interest) under borrowing agreements	The table below summarizes the Company’s contractual obligations (excluding interest) under borrowing agreements as of December 31, 2016 (amounts in thousands):   Payments Due by Period   Total   Less than 1 year   1 - 3 years   3 - 5 years   More than 5 years CLO 2012-1 notes $ 405,163   $ —   $ —   $ —   $ 405,163 CLO 2013-1 notes 481,563   —   —   —   481,563 CLO 2013-2 notes 370,209   —   —   —   370,209 CLO 9 notes 512,149   —   —   —   512,149 CLO 10 notes 407,147   —   —   —   407,147 CLO 15 notes 382,600   —   —   —   382,600 CLO 16 notes 648,800   —   —   —   648,800 CLO warehouse facility 20,000   20,000   —   —   — Senior notes 115,043   —   —   —   115,043 Junior subordinated notes 283,517   —   —   —   283,517 Total $ 3,626,191   $ 20,000   $ —   $ —   $ 3,606,191