Consolidated Statements of Cash Flows - USD ($) $ in Thousands		4 Months Ended	8 Months Ended	12 Months Ended
		Apr. 30, 2014	Dec. 31, 2014	Dec. 31, 2016	Dec. 31, 2015
Cash flows from financing activities
Distributions on common shares				$ (80,800)	$ (179,100)
Cash and cash equivalents at beginning of period				320,122
Cash and cash equivalents at end of period				627,237	320,122
Successor Company
Cash flows from operating activities
Net income (loss)			$ (219,229)	21,381	(334,675)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Net realized and unrealized (gain) loss on derivatives and foreign exchange			18,507	(7,597)	(2,158)
Net (gain) loss on extinguishment of debt			0	(29,846)	0
Unrealized (depreciation) appreciation on investments allocable to noncontrolling interests			5,956	(11,779)	(23,429)
Write-off of debt issuance costs			0	0	0
Lower of cost or estimated fair value adjustment on corporate loans held for sale			0	0	0
Impairment charges			0	0	0
Share-based compensation			0	0	0
Net realized and unrealized (gain) loss on investments			343,416	35,169	451,138
Depreciation and net amortization			21,391	36,023	28,242
Net realized and unrealized (gain) loss on debt			(16,478)	(68,259)	19,659
Net realized and unrealized (gain) loss on debt to affiliates			0	6,330	0
Changes in assets and liabilities:
Interest receivable			(11,485)	8,636	26,607
Other assets			(21,117)	(14,875)	(33,780)
Related party payable			5,724	1,918	(1,512)
Accounts payable, accrued expenses and other liabilities			(20,561)	(3,162)	30,949
Accrued interest payable			1,769	(346)	1,217
Net cash provided by (used in) operating activities			107,893	(26,407)	162,258
Cash flows from investing activities
Principal payments from corporate loans			634,536	1,455,688	1,401,760
Principal payments from securities			60,056	34,285	14,044
Proceeds from sales of corporate loans			575,099	2,134,178	1,509,737
Proceeds from sales of securities			38,342	116,259	173,075
Proceeds from equity and other investments			89,697	173,496	74,609
Purchases of corporate loans			(1,245,460)	(2,495,709)	(1,873,963)
Purchases of securities			(95,881)	(5,068)	(19,387)
Purchases of equity and other investments			(158,618)	(81,707)	(102,365)
Net change in proceeds, purchases and settlements of derivatives			(7,295)	8,002	22,176
Net change in restricted cash and cash equivalents			202,355	(111,715)	(39,867)
Net cash provided by (used in) investing activities			92,831	1,227,709	1,159,819
Cash flows from financing activities
Issuance of collateralized loan obligation secured notes			885,983	1,391,610	965,823
Retirement of collateralized loan obligation secured notes			(1,045,041)	(2,142,035)	(1,672,467)
Repayment of senior notes			0	(258,750)	0
Distributions on common shares			(121,088)	(80,811)	(179,081)
Distributions on preferred shares	[1]		(13,782)	(27,564)	(27,564)
Distributions to Parent			(203,568)	(64,151)	(251,748)
Contributions from Parent			235,759	267,038	0
Capital contributions from Parent			605	0	0
Capital distributions to noncontrolling interests			0	(7,609)	(2,728)
Capital contributions from noncontrolling interests			1,110	8,085	8,867
Other capitalized costs			(7,810)	0	(6,462)
Net cash provided by (used in) financing activities			(247,732)	(894,187)	(1,165,360)
Net increase (decrease) in cash and cash equivalents			(47,008)	307,115	156,717
Cash and cash equivalents at beginning of period			210,413	320,122	163,405
Cash and cash equivalents at end of period		$ 210,413	163,405	627,237	320,122
Supplemental cash flow information
Cash paid for interest			114,939	239,028	167,215
Net cash paid (refunded) for income taxes			93	36	(4,532)
Non-cash investing and financing activities
Assets distributed to Parent			(292,425)	(268,007)	0
Assets contributed from Parent			239,085	64,151	251,748
Redemption on subordinated notes			0	(42,259)	0
Assets contributed from noncontrolling interests			105,015	0	0
Natural resources assets transferred out			(114,546)	0	0
Interest in Trinity transferred in			114,546	0	0
Preferred share distributions declared, not yet paid			6,891	6,891	6,891
Loans transferred from held for investment to held for sale			0	0	0
Successor Company | CLO warehouse facility
Cash flows from financing activities
Proceeds from credit facilities			0	82,479	274,296
Repayment of credit facilities			0	(62,479)	(274,296)
Successor Company | Other Credit Facilities
Cash flows from financing activities
Proceeds from credit facilities			115,100	0	0
Repayment of credit facilities			(95,000)	$ 0	$ 0
Predecessor Company
Cash flows from operating activities
Net income (loss)		105,980
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Net realized and unrealized (gain) loss on derivatives and foreign exchange		9,783
Net (gain) loss on extinguishment of debt		0
Unrealized (depreciation) appreciation on investments allocable to noncontrolling interests		0
Write-off of debt issuance costs		1,472
Lower of cost or estimated fair value adjustment on corporate loans held for sale		(5,038)
Impairment charges		4,391
Share-based compensation		1,018
Net realized and unrealized (gain) loss on investments		(60,906)
Depreciation and net amortization		15,832
Net realized and unrealized (gain) loss on debt		0
Net realized and unrealized (gain) loss on debt to affiliates		0
Changes in assets and liabilities:
Interest receivable		(6,753)
Other assets		(19,668)
Related party payable		(1,815)
Accounts payable, accrued expenses and other liabilities		27,211
Accrued interest payable		(1,470)
Net cash provided by (used in) operating activities		70,037
Cash flows from investing activities
Principal payments from corporate loans		906,166
Principal payments from securities		21,223
Proceeds from sales of corporate loans		36,595
Proceeds from sales of securities		44,373
Proceeds from equity and other investments		48,911
Purchases of corporate loans		(886,230)
Purchases of securities		(78,106)
Purchases of equity and other investments		(104,301)
Net change in proceeds, purchases and settlements of derivatives		(7,265)
Net change in restricted cash and cash equivalents		(299,579)
Net cash provided by (used in) investing activities		(318,213)
Cash flows from financing activities
Issuance of collateralized loan obligation secured notes		648,197
Retirement of collateralized loan obligation secured notes		(221,914)
Repayment of senior notes		0
Distributions on common shares		(45,061)
Distributions on preferred shares	[1]	(13,782)
Distributions to Parent		0
Contributions from Parent		0
Capital contributions from Parent		0
Capital distributions to noncontrolling interests		0
Capital contributions from noncontrolling interests		0
Other capitalized costs		(3,918)
Net cash provided by (used in) financing activities		301,422
Net increase (decrease) in cash and cash equivalents		53,246
Cash and cash equivalents at beginning of period		157,167	$ 210,413
Cash and cash equivalents at end of period		210,413
Supplemental cash flow information
Cash paid for interest		53,576
Net cash paid (refunded) for income taxes		157
Non-cash investing and financing activities
Assets distributed to Parent		0
Assets contributed from Parent		0
Redemption on subordinated notes		0
Assets contributed from noncontrolling interests		0
Natural resources assets transferred out		0
Interest in Trinity transferred in		0
Preferred share distributions declared, not yet paid		0
Loans transferred from held for investment to held for sale		348,808
Predecessor Company | CLO warehouse facility
Cash flows from financing activities
Proceeds from credit facilities		0
Repayment of credit facilities		0
Predecessor Company | Other Credit Facilities
Cash flows from financing activities
Proceeds from credit facilities		13,300
Repayment of credit facilities		$ (75,400)

[1] For the four months ended April 30, 2014, $6.9 million of distributions on preferred shares was previously presented as "preferred share distribution payable" within operating activities of the consolidated statements of cash flows.