FINANCING RECEIVABLES (Allowance for Credit Losses) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2015	Dec. 31, 2014
Activity in the allowance for credit losses of financing receivables [Roll Forward]
Allowance for losses at beginning of period	$ 16,990	$ 36,243
Provision for credit losses	280	3,058	$ 4,265
(Charge-offs) recoveries	(17,684)	(22,405)
Recoveries	549	94
Allowance for losses at end of period	135	16,990	36,243
Ending balance, individually evaluated for impairment				$ 135	$ 16,990
Ending balance, collectively evaluated for impairment				0	0
Allowance for losses at end of period	16,990	36,243	36,243	135	16,990
Individually evaluated for impairment				26,667	49,735
Collectively evaluated for impairment				206	88
Financing receivable recorded investment total				26,873	49,823
Receivables from Managed Entities and Related Parties [Member]
Activity in the allowance for credit losses of financing receivables [Roll Forward]
Allowance for losses at beginning of period	16,990	36,229
Provision for credit losses	675	3,123
(Charge-offs) recoveries	(17,665)	(22,394)
Recoveries	0	32
Allowance for losses at end of period	0	16,990	36,229
Ending balance, individually evaluated for impairment				0	16,990
Ending balance, collectively evaluated for impairment				0	0
Allowance for losses at end of period	16,990	36,229	36,229	0	16,990
Individually evaluated for impairment				26,667	49,735
Collectively evaluated for impairment				0	0
Financing receivable recorded investment total				26,667	49,735
Leases and Loans [Member]
Activity in the allowance for credit losses of financing receivables [Roll Forward]
Allowance for losses at beginning of period	0	0
Provision for credit losses	(400)	(62)
(Charge-offs) recoveries	(19)	0
Recoveries	549	62
Allowance for losses at end of period	130	0	0
Ending balance, individually evaluated for impairment				130	0
Ending balance, collectively evaluated for impairment				0	0
Allowance for losses at end of period	0	0	0	130	0
Individually evaluated for impairment				0	0
Collectively evaluated for impairment				0	0
Financing receivable recorded investment total				0	0
Rent Receivables [Member]
Activity in the allowance for credit losses of financing receivables [Roll Forward]
Allowance for losses at beginning of period	0	14
Provision for credit losses	5	(3)
(Charge-offs) recoveries	0	(11)
Recoveries	0	0
Allowance for losses at end of period	5	0	14
Ending balance, individually evaluated for impairment				5	0
Ending balance, collectively evaluated for impairment				0	0
Allowance for losses at end of period	$ 0	$ 14	$ 14	5	0
Individually evaluated for impairment				0	0
Collectively evaluated for impairment				206	88
Financing receivable recorded investment total				$ 206	$ 88