FINANCING RECEIVABLES (Allowance for Credit Losses) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Activity in the allowance for credit losses of financing receivables [Roll Forward]
Allowance for losses at beginning of period	$ 17,360	$ 37,451	$ 16,990	$ 36,243	$ 36,243
Provision for (reversal) of credit losses	276	1,575	678	2,783
(Charge-offs) recoveries	31	(1)	(1)	(2)
Recoveries		5		6
Allowance for losses at end of period	17,667	39,030	17,667	39,030	16,990
Ending balance, individually evaluated for impairment	17,667	39,028	17,667	39,028
Ending balance, collectively evaluated for impairment	0	2	0	2
Allowance for losses at end of period	17,667	39,030	17,667	39,030	16,990
Ending balance, individually evaluated for impairment	44,185		44,185		47,293
Ending balance, collectively evaluated for impairment	179		179		88
Balance, end of period	44,364		44,364		47,381
Receivables from Managed Entities [Member]
Activity in the allowance for credit losses of financing receivables [Roll Forward]
Allowance for losses at beginning of period	17,359	37,441	16,990	36,229	36,229
Provision for (reversal) of credit losses	306	1,588	675	2,801
(Charge-offs) recoveries	0	(1)	0	(2)
Recoveries		0		0
Allowance for losses at end of period	17,665	39,028	17,665	39,028	16,990
Ending balance, individually evaluated for impairment	17,665	39,028	17,665	39,028
Ending balance, collectively evaluated for impairment	0	0	0	0
Allowance for losses at end of period	17,665	39,028	17,665	39,028	16,990
Ending balance, individually evaluated for impairment	44,185		44,185		47,293
Ending balance, collectively evaluated for impairment	0		0		0
Balance, end of period	44,185		44,185		47,293
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	0	0	0
Provision for (reversal) of credit losses	(31)	(5)	1	(6)
(Charge-offs) recoveries	31	0	(1)	0
Recoveries		5		6
Allowance for losses at end of period	0	0	0	0	0
Ending balance, individually evaluated for impairment	0	0	0	0
Ending balance, collectively evaluated for impairment	0	0	0	0
Allowance for losses at end of period	0	0	0	0	0
Rent Receivables [Member]
Activity in the allowance for credit losses of financing receivables [Roll Forward]
Allowance for losses at beginning of period	1	10	0	14	14
Provision for (reversal) of credit losses	1	(8)	2	(12)
(Charge-offs) recoveries	0	0	0	0
Recoveries		0		0
Allowance for losses at end of period	2	2	2	2	0
Ending balance, individually evaluated for impairment	2	0	2	0
Ending balance, collectively evaluated for impairment	0	2	0	2
Allowance for losses at end of period	2	$ 2	2	$ 2	0
Ending balance, individually evaluated for impairment	0		0		0
Ending balance, collectively evaluated for impairment	179		179		88
Balance, end of period	$ 179		$ 179		$ 88