SUMMARIZED CONDENSED CONSOLIDATING INFORMATION - Condensed Consolidating Statement of Cash Flows (unaudited) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	$ 24,726	$ 24,701
Cash flows from investing activities:
Origination and fundings of loans receivable	(5,850)	(7,303)
Origination and fundings of preferred equity investments	(984)	(311)
Additions to real estate	(474)	(675)
Repayment of loans/notes receivable	8,874	2,052
Investment in subsidiary	0	0
Net proceeds from the sale of real estate	398	0
Distribution from subsidiary	0	0
Intercompany financing	0	0
Net cash provided by (used in) investing activities	1,964	(6,237)
Cash flows from financing activities:
Net repayments from prior revolving credit facility	(57,000)	(42,000)
Proceeds from term loans	69,360	0
Principal payments on mortgage notes	(1,022)	(697)
Payments of deferred financing costs	(5,885)	(130)
Issuance of common stock	(1,274)	(7,587)
Dividends paid on common and preferred stock	(29,301)	(25,672)
Contribution from parent	0	0
Distribution to parent	0	0
Intercompany financing	0	0
Net cash (used in) provided by financing activities	(25,122)	(76,086)
Net increase (decrease) in cash and cash equivalents	1,568	(57,622)
Effect of foreign currency translation on cash and cash equivalents	131	0
Cash and cash equivalents, beginning of period	7,434	61,793
Cash and cash equivalents, end of period	9,133	4,171
Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	21,718	23,502
Cash flows from investing activities:
Origination and fundings of loans receivable	0	0
Origination and fundings of preferred equity investments	0	0
Additions to real estate	(74)	(3)
Repayment of loans/notes receivable	0	0
Investment in subsidiary	(200)	(414)
Net proceeds from the sale of real estate	0
Distribution from subsidiary	2,025	1,355
Intercompany financing	8,347	(48,175)
Net cash provided by (used in) investing activities	10,098	(47,237)
Cash flows from financing activities:
Net repayments from prior revolving credit facility	0	0
Proceeds from term loans	0
Principal payments on mortgage notes	0	0
Payments of deferred financing costs	0	0
Issuance of common stock	(1,274)	(7,587)
Dividends paid on common and preferred stock	(29,301)	(25,672)
Contribution from parent	0	0
Distribution to parent	0	0
Intercompany financing	0	0
Net cash (used in) provided by financing activities	(30,575)	(33,259)
Net increase (decrease) in cash and cash equivalents	1,241	(56,994)
Effect of foreign currency translation on cash and cash equivalents	0
Cash and cash equivalents, beginning of period	2,548	58,799
Cash and cash equivalents, end of period	3,789	1,805
Issuers [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	0	0
Cash flows from investing activities:
Origination and fundings of loans receivable	0	0
Origination and fundings of preferred equity investments	0	0
Additions to real estate	0	0
Repayment of loans/notes receivable	0	0
Investment in subsidiary	(200)	(414)
Net proceeds from the sale of real estate	0
Distribution from subsidiary	2,025	1,355
Intercompany financing	25,621	(6,063)
Net cash provided by (used in) investing activities	27,446	(5,122)
Cash flows from financing activities:
Net repayments from prior revolving credit facility	(57,000)	(42,000)
Proceeds from term loans	45,000
Principal payments on mortgage notes	0	0
Payments of deferred financing costs	(5,274)	(112)
Issuance of common stock	0	0
Dividends paid on common and preferred stock	0	0
Contribution from parent	200	414
Distribution to parent	(2,025)	(1,355)
Intercompany financing	(8,347)	48,175
Net cash (used in) provided by financing activities	(27,446)	5,122
Net increase (decrease) in cash and cash equivalents	0	0
Effect of foreign currency translation on cash and cash equivalents	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	439	0
Cash flows from investing activities:
Origination and fundings of loans receivable	(5,850)	(7,303)
Origination and fundings of preferred equity investments	(984)	(311)
Additions to real estate	(400)	(501)
Repayment of loans/notes receivable	8,874	$ 2,052
Investment in subsidiary	0
Net proceeds from the sale of real estate	398
Distribution from subsidiary	0	$ 0
Intercompany financing	0	0
Net cash provided by (used in) investing activities	2,038	(6,063)
Cash flows from financing activities:
Net repayments from prior revolving credit facility	0	0
Proceeds from term loans	24,360
Principal payments on mortgage notes	0	0
Payments of deferred financing costs	(611)	0
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	(25,621)	6,063
Net cash (used in) provided by financing activities	(1,872)	6,063
Net increase (decrease) in cash and cash equivalents	605	0
Effect of foreign currency translation on cash and cash equivalents	113
Cash and cash equivalents, beginning of period	1,008	0
Cash and cash equivalents, end of period	1,726	0
Combined Non-Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	2,569	1,199
Cash flows from investing activities:
Origination and fundings of loans receivable	0	0
Origination and fundings of preferred equity investments	0	0
Additions to real estate	0	(171)
Repayment of loans/notes receivable	0	0
Investment in subsidiary	0	0
Net proceeds from the sale of real estate	0
Distribution from subsidiary	0	0
Intercompany financing	0	0
Net cash provided by (used in) investing activities	0	(171)
Cash flows from financing activities:
Net repayments from prior revolving credit facility	0	0
Proceeds from term loans	0
Principal payments on mortgage notes	(1,022)	(697)
Payments of deferred financing costs	0	(18)
Issuance of common stock	0	0
Dividends paid on common and preferred stock	0	0
Contribution from parent	200	414
Distribution to parent	(2,025)	(1,355)
Intercompany financing	0	0
Net cash (used in) provided by financing activities	(2,847)	(1,656)
Net increase (decrease) in cash and cash equivalents	(278)	(628)
Effect of foreign currency translation on cash and cash equivalents	18
Cash and cash equivalents, beginning of period	3,878	2,994
Cash and cash equivalents, end of period	3,618	2,366
Elimination [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	0	0
Cash flows from investing activities:
Origination and fundings of loans receivable	0	0
Origination and fundings of preferred equity investments	0	0
Additions to real estate	0	0
Repayment of loans/notes receivable	0	0
Investment in subsidiary	400	828
Net proceeds from the sale of real estate	0
Distribution from subsidiary	(4,050)	(2,710)
Intercompany financing	(33,968)	54,238
Net cash provided by (used in) investing activities	(37,618)	52,356
Cash flows from financing activities:
Net repayments from prior revolving credit facility	0	0
Proceeds from term loans	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	4,050	2,710
Intercompany financing	33,968	(54,238)
Net cash (used in) provided by financing activities	37,618	(52,356)
Net increase (decrease) in cash and cash equivalents	0	0
Effect of foreign currency translation on cash and cash equivalents	0
Cash and cash equivalents, beginning of period	0	0
Cash and cash equivalents, end of period	$ 0	$ 0