FAIR VALUE OF FINANCIAL INSTRUMENTS (Details 3) - USD ($)	1 Months Ended	3 Months Ended	4 Months Ended	8 Months Ended	12 Months Ended
	Apr. 30, 2014	Mar. 31, 2014	Apr. 30, 2014	Dec. 31, 2014	Dec. 31, 2015
Predecessor Company
Reconciliation of liabilities measured on Level 3 basis
Transfers from Level 1 into Level 2	$ 0		$ 0
Transfers from Level 2 into Level 1	0		0
Predecessor Company | Other Securities, at Estimated Fair Value
Reconciliation of assets measured on Level 3 basis
Balance at the beginning of the period	125,511,000	$ 107,530,000	107,530,000	$ 125,990,000
Included in earnings	479,000	3,059,000
Included in other comprehensive income	0	0
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Purchases	0	25,000,000
Sales	0	0
Settlements	0	(10,078,000)
Balance at the end of the period	125,990,000	125,511,000	125,990,000
Change in unrealized gains or losses for the period included in earnings for assets held at the end of the reporting period			2,683,000
Predecessor Company | Residential Mortgage- Backed Securities
Reconciliation of assets measured on Level 3 basis
Balance at the beginning of the period	58,753,000	76,004,000	76,004,000	59,623,000
Included in earnings	1,416,000	3,088,000
Included in other comprehensive income	0	0
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Purchases	0	0
Sales	0	(17,810,000)
Settlements	(546,000)	(2,529,000)
Balance at the end of the period	59,623,000	58,753,000	59,623,000
Change in unrealized gains or losses for the period included in earnings for assets held at the end of the reporting period			5,242,000
Predecessor Company | Corporate loans, at estimated fair value
Reconciliation of assets measured on Level 3 basis
Balance at the beginning of the period	153,395,000	152,800,000	152,800,000	156,907,000
Included in earnings	1,240,000	(5,123,000)
Included in other comprehensive income	0	0
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Purchases	0	8,822,000
Sales	0	0
Settlements	2,272,000	(3,104,000)
Balance at the end of the period	156,907,000	153,395,000	156,907,000
Change in unrealized gains or losses for the period included in earnings for assets held at the end of the reporting period			4,445,000
Predecessor Company | Equity Investments, at Estimated Fair Value
Reconciliation of assets measured on Level 3 basis
Balance at the beginning of the period	258,977,000	138,059,000	138,059,000	152,070,000
Included in earnings	12,126,000	9,076,000
Included in other comprehensive income	0	0
Transfers into Level 3	0	0
Transfers out of Level 3	(119,033,000)	(8,751,000)
Purchases	0	0
Sales	0	0
Settlements	0	120,593,000
Balance at the end of the period	152,070,000	258,977,000	152,070,000
Change in unrealized gains or losses for the period included in earnings for assets held at the end of the reporting period			20,499,000
Predecessor Company | Interests in Joint Ventures and Partnerships
Reconciliation of assets measured on Level 3 basis
Balance at the beginning of the period	494,420,000	415,247,000	415,247,000	470,693,000
Included in earnings	(24,158,000)	22,377,000
Included in other comprehensive income	0	0
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Purchases	1,615,000	42,683,000
Sales	0	0
Settlements	(1,184,000)	14,113,000
Balance at the end of the period	470,693,000	494,420,000	470,693,000
Change in unrealized gains or losses for the period included in earnings for assets held at the end of the reporting period			(1,781,000)
Predecessor Company | Foreign Exchange Options, Net
Reconciliation of assets measured on Level 3 basis
Balance at the beginning of the period	8,128,000	8,941,000	8,941,000	8,854,000
Included in earnings	726,000	(813,000)
Included in other comprehensive income	0	0
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Purchases	0	0
Sales	0	0
Settlements	0	0
Balance at the end of the period	8,854,000	8,128,000	8,854,000
Change in unrealized gains or losses for the period included in earnings for assets held at the end of the reporting period			(87,000)
Predecessor Company | Options
Reconciliation of assets measured on Level 3 basis
Balance at the beginning of the period	6,492,000	6,794,000	6,794,000	6,684,000
Included in earnings	192,000	(302,000)
Included in other comprehensive income	0	0
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Purchases	0	0
Sales	0	0
Settlements	0	0
Balance at the end of the period	6,684,000	6,492,000	6,684,000
Change in unrealized gains or losses for the period included in earnings for assets held at the end of the reporting period			(110,000)
Predecessor Company | Securities Available- For-Sale
Reconciliation of assets measured on Level 3 basis
Balance at the beginning of the period	23,528,000	23,401,000	23,401,000	30,510,000
Included in earnings	44,000	22,000
Included in other comprehensive income	33,000	121,000
Transfers into Level 3	6,937,000	0
Transfers out of Level 3	0	0
Purchases	0	0
Sales	0	0
Settlements	(32,000)	(16,000)
Balance at the end of the period	30,510,000	$ 23,528,000	30,510,000
Change in unrealized gains or losses for the period included in earnings for assets held at the end of the reporting period			66,000
Successor Company
Reconciliation of liabilities measured on Level 3 basis
Transfers from Level 1 into Level 2					$ 0
Transfers from Level 2 into Level 1					0
Successor Company | Collateralized Loan Obligation Secured Notes
Reconciliation of liabilities measured on Level 3 basis
Balance at the beginning of the period				5,663,665,000	5,501,099,000
Included in earnings				(4,123,000)	0
Transfers into Level 3				0	0
Transfers out of level 3				0	(5,501,099,000)
Purchases				885,983,000	0
Sales				0	0
Settlements				(1,044,426,000)	0
Balance at the end of the period	5,663,665,000		5,663,665,000	5,501,099,000	0
Change in unrealized gains or losses for the period included in earnings for liabilities held at the end of the reporting period				(4,393,000)	0
Successor Company | Corporate Debt Securities
Reconciliation of assets measured on Level 3 basis
Balance at the beginning of the period				156,500,000	317,034,000
Included in earnings				(16,973,000)	(37,716,000)
Transfers into Level 3				0	0
Transfers out of Level 3				0	0
Purchases				83,402,000	10,001,000
Sales				(26,433,000)	(98,539,000)
Settlements				120,538,000	4,206,000
Balance at the end of the period	156,500,000		156,500,000	317,034,000	194,986,000
Change in unrealized gains or losses for the period included in earnings for assets held at the end of the reporting period				(16,787,000)	(45,488,000)
Successor Company | Residential Mortgage- Backed Securities
Reconciliation of assets measured on Level 3 basis
Balance at the beginning of the period				59,623,000	55,184,000
Included in earnings				4,981,000	8,398,000
Transfers into Level 3				0	0
Transfers out of Level 3				0	0
Purchases				0	0
Sales				0	0
Settlements				(9,420,000)	(13,961,000)
Balance at the end of the period	59,623,000		59,623,000	55,184,000	49,621,000
Change in unrealized gains or losses for the period included in earnings for assets held at the end of the reporting period				386,000	2,273,000
Successor Company | Corporate loans, at estimated fair value
Reconciliation of assets measured on Level 3 basis
Balance at the beginning of the period				294,218,000	347,077,000
Included in earnings				(15,346,000)	(69,384,000)
Transfers into Level 3				66,250,000	0
Transfers out of Level 3				0	0
Purchases				2,588,000	12,775,000
Sales				(2,912,000)	(25,511,000)
Settlements				2,279,000	33,777,000
Balance at the end of the period	294,218,000		294,218,000	347,077,000	298,734,000
Change in unrealized gains or losses for the period included in earnings for assets held at the end of the reporting period				(15,305,000)	(67,368,000)
Successor Company | Equity Investments, at Estimated Fair Value
Reconciliation of assets measured on Level 3 basis
Balance at the beginning of the period				157,765,000	81,719,000
Included in earnings				(2,005,000)	(42,472,000)
Transfers into Level 3				0	0
Transfers out of Level 3				(1,230,000)	0
Purchases				0	0
Sales				(17,535,000)	0
Settlements				(55,276,000)	107,401,000
Balance at the end of the period	157,765,000		157,765,000	81,719,000	146,648,000
Change in unrealized gains or losses for the period included in earnings for assets held at the end of the reporting period				(791,000)	(41,776,000)
Successor Company | Interests in Joint Ventures and Partnerships
Reconciliation of assets measured on Level 3 basis
Balance at the beginning of the period				472,467,000	718,772,000
Included in earnings				(102,158,000)	(141,386,000)
Transfers into Level 3				0	0
Transfers out of Level 3				0	0
Purchases				90,566,000	351,184,000
Sales				(13,795,000)	0
Settlements				271,692,000	(40,162,000)
Balance at the end of the period	472,467,000		472,467,000	718,772,000	888,408,000
Change in unrealized gains or losses for the period included in earnings for assets held at the end of the reporting period				(106,215,000)	(141,386,000)
Successor Company | Foreign Exchange Options, Net
Reconciliation of assets measured on Level 3 basis
Balance at the beginning of the period				8,854,000	0
Included in earnings				(8,854,000)	2,887,000
Transfers into Level 3				0	0
Transfers out of Level 3				0	0
Purchases				0	0
Sales				0	0
Settlements				0	0
Balance at the end of the period	8,854,000		8,854,000	0	2,887,000
Change in unrealized gains or losses for the period included in earnings for assets held at the end of the reporting period				0	2,887,000
Successor Company | Warrants
Reconciliation of assets measured on Level 3 basis
Balance at the beginning of the period					0
Included in earnings					(2,412,000)
Transfers into Level 3					0
Transfers out of Level 3					0
Purchases					0
Sales					0
Settlements					2,412,000
Balance at the end of the period				0	0
Change in unrealized gains or losses for the period included in earnings for assets held at the end of the reporting period					(2,412,000)
Successor Company | Options
Reconciliation of assets measured on Level 3 basis
Balance at the beginning of the period				6,684,000	5,212,000
Included in earnings				(1,472,000)	(5,117,000)
Transfers into Level 3				0	0
Transfers out of Level 3				0	0
Purchases				0	0
Sales				0	0
Settlements				0	0
Balance at the end of the period	$ 6,684,000		$ 6,684,000	5,212,000	95,000
Change in unrealized gains or losses for the period included in earnings for assets held at the end of the reporting period				$ (1,472,000)	$ (5,117,000)