SUMMARIZED CONDENSED CONSOLIDATING INFORMATION - Condensed Consolidating Statement of Cash Flows (unaudited) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	$ 133,816	$ 79,115
Cash flows from investing activities:
Acquisitions of real estate	(109,619)	(386,572)
Origination and fundings of loans receivable	(9,478)	(26,207)
Preferred equity investments	(6,845)	(9,281)
Additions to real estate	(901)	(1,596)
DIP Financing	0	(3,302)
Repayment of loans receivable	214,947	3,285
Release of contingent consideration held in escrow	0	5,240
Investment in subsidiary	0	0
Net proceeds from the sale of real estate	85,449	15,752
Distribution from subsidiary	0	0
Intercompany financing	0	0
Net cash provided by (used in) investing activities	173,553	(402,681)
Cash flows from financing activities:
Net repayments from revolving credit facility	(255,000)	136,000
Proceeds from term loans	69,360	73,242
Proceeds from mortgage notes	0	28,735
Principal payments on mortgage notes	(13,756)	(2,184)
Payments of deferred financing costs	(5,933)	(1,314)
Issuance of common stock	(1,289)	139,617
Dividends paid on common and preferred stock	(89,283)	(80,619)
Contribution from parent	0	0
Distribution to parent	0	0
Intercompany financing	0	0
Net cash (used in) provided by financing activities	(295,901)	293,477
Net increase (decrease) in cash and cash equivalents	11,468	(30,089)
Effect of foreign currency translation on cash and cash equivalents	772	(231)
Cash and cash equivalents, beginning of period	7,434	61,793
Cash and cash equivalents, end of period	19,674	31,473
Elimination [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	0	0
Cash flows from investing activities:
Acquisitions of real estate	0	0
Origination and fundings of loans receivable	0	0
Preferred equity investments	0	0
Additions to real estate	0	0
DIP Financing		0
Repayment of loans receivable	0	0
Release of contingent consideration held in escrow		0
Investment in subsidiary	400	828
Net proceeds from the sale of real estate	0	0
Distribution from subsidiary	(12,808)	(2,710)
Intercompany financing	(179,954)	467,513
Net cash provided by (used in) investing activities	(192,362)	465,631
Cash flows from financing activities:
Net repayments from revolving credit facility	0	0
Proceeds from term loans	0	0
Proceeds from mortgage notes		0
Principal payments on mortgage notes	0	0
Payments of deferred financing costs	0	0
Issuance of common stock	0	0
Dividends paid on common and preferred stock	0	0
Contribution from parent	(400)	(828)
Distribution to parent	12,808	2,710
Intercompany financing	179,954	(467,513)
Net cash (used in) provided by financing activities	192,362	(465,631)
Net increase (decrease) in cash and cash equivalents	0	0
Effect of foreign currency translation on cash and cash equivalents	0	0
Cash and cash equivalents, beginning of period	0	0
Cash and cash equivalents, end of period	0	0
Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	113,886	74,256
Cash flows from investing activities:
Acquisitions of real estate	0	0
Origination and fundings of loans receivable	0	0
Preferred equity investments	0	0
Additions to real estate	(124)	(11)
DIP Financing		0
Repayment of loans receivable	0	0
Release of contingent consideration held in escrow		0
Investment in subsidiary	(200)	(414)
Net proceeds from the sale of real estate	0	0
Distribution from subsidiary	6,404	1,355
Intercompany financing	(17,684)	(165,871)
Net cash provided by (used in) investing activities	(11,604)	(164,941)
Cash flows from financing activities:
Net repayments from revolving credit facility	0	0
Proceeds from term loans	0	0
Proceeds from mortgage notes		0
Principal payments on mortgage notes	0	0
Payments of deferred financing costs	0	0
Issuance of common stock	(1,289)	139,617
Dividends paid on common and preferred stock	(89,283)	(80,619)
Contribution from parent	0	0
Distribution to parent	0	0
Intercompany financing	0	0
Net cash (used in) provided by financing activities	(90,572)	58,998
Net increase (decrease) in cash and cash equivalents	11,710	(31,687)
Effect of foreign currency translation on cash and cash equivalents	0	(203)
Cash and cash equivalents, beginning of period	2,548	58,799
Cash and cash equivalents, end of period	14,258	26,909
Issuers [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	0	0
Cash flows from investing activities:
Acquisitions of real estate	0	0
Origination and fundings of loans receivable	0	0
Preferred equity investments	0	0
Additions to real estate	0	0
DIP Financing		0
Repayment of loans receivable	0	0
Release of contingent consideration held in escrow		0
Investment in subsidiary	(200)	(414)
Net proceeds from the sale of real estate	0	0
Distribution from subsidiary	6,404	1,355
Intercompany financing	197,638	(301,642)
Net cash provided by (used in) investing activities	203,842	(300,701)
Cash flows from financing activities:
Net repayments from revolving credit facility	(255,000)	136,000
Proceeds from term loans	45,000	0
Proceeds from mortgage notes		0
Principal payments on mortgage notes	0	0
Payments of deferred financing costs	(5,322)	(229)
Issuance of common stock	0	0
Dividends paid on common and preferred stock	0	0
Contribution from parent	200	414
Distribution to parent	(6,404)	(1,355)
Intercompany financing	17,684	165,871
Net cash (used in) provided by financing activities	(203,842)	300,701
Net increase (decrease) in cash and cash equivalents	0	0
Effect of foreign currency translation on cash and cash equivalents	0	0
Cash and cash equivalents, beginning of period	0	0
Cash and cash equivalents, end of period	0	0
Combined Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	555	22
Cash flows from investing activities:
Acquisitions of real estate	(109,619)	(375,324)
Origination and fundings of loans receivable	(9,478)	(26,207)
Preferred equity investments	(6,845)	(9,281)
Additions to real estate	(400)	(1,100)
DIP Financing		(3,302)
Repayment of loans receivable	214,947	3,285
Release of contingent consideration held in escrow		5,240
Investment in subsidiary	0	0
Net proceeds from the sale of real estate	85,449	15,752
Distribution from subsidiary	0	0
Intercompany financing	0	0
Net cash provided by (used in) investing activities	174,054	(390,937)
Cash flows from financing activities:
Net repayments from revolving credit facility	0	0
Proceeds from term loans	24,360	73,242
Proceeds from mortgage notes		0
Principal payments on mortgage notes	0	0
Payments of deferred financing costs	(611)	(714)
Issuance of common stock	0	0
Dividends paid on common and preferred stock	0	0
Contribution from parent	0	0
Distribution to parent	0	0
Intercompany financing	(197,638)	318,618
Net cash (used in) provided by financing activities	(173,889)	391,146
Net increase (decrease) in cash and cash equivalents	720	231
Effect of foreign currency translation on cash and cash equivalents	759	(20)
Cash and cash equivalents, beginning of period	1,008	0
Cash and cash equivalents, end of period	2,487	211
Combined Non-Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	19,375	4,837
Cash flows from investing activities:
Acquisitions of real estate	0	(11,248)
Origination and fundings of loans receivable	0	0
Preferred equity investments	0	0
Additions to real estate	(377)	(485)
DIP Financing		0
Repayment of loans receivable	0	0
Release of contingent consideration held in escrow		0
Investment in subsidiary	0	0
Net proceeds from the sale of real estate	0	0
Distribution from subsidiary	0	0
Intercompany financing	0	0
Net cash provided by (used in) investing activities	(377)	(11,733)
Cash flows from financing activities:
Net repayments from revolving credit facility	0	0
Proceeds from term loans	0	0
Proceeds from mortgage notes		28,735
Principal payments on mortgage notes	(13,756)	(2,184)
Payments of deferred financing costs	0	(371)
Issuance of common stock	0	0
Dividends paid on common and preferred stock	0	0
Contribution from parent	200	414
Distribution to parent	(6,404)	(1,355)
Intercompany financing	0	(16,976)
Net cash (used in) provided by financing activities	(19,960)	8,263
Net increase (decrease) in cash and cash equivalents	(962)	1,367
Effect of foreign currency translation on cash and cash equivalents	13	(8)
Cash and cash equivalents, beginning of period	3,878	2,994
Cash and cash equivalents, end of period	$ 2,929	$ 4,353