SUMMARIZED CONDENSED CONSOLIDATING INFORMATION (Condensed Consolidating Statement of Cash Flows) (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Condensed Financial Statements, Captions [Line Items]
Principal payments on senior unsecured notes	$ (113,750)	$ 0
Net cash provided by operating activities	49,211	47,902
Cash flows from investing activities:
Acquisitions of real estate	(6,175)	(98,050)
Acquisition of note receivable		(22,111)
Origination of note receivable	(26,393)
Preferred equity investment	(6,624)	0
Additions to real estate	(388)	(1,039)
Net proceeds from the sale of real estate	2,208	0
Investment in Subsidiary		0
Distribution from Subsidiary	0	0
Intercompany financing	0	0
Net cash used in investing activities	(37,372)	(121,200)
Cash flows from financing activities:
Proceeds from issuance of senior unsecured notes	200,000	106,000
Proceeds from secured revolving credit facility	0	42,500
Proceeds from mortgage notes	0	35,829
Payments on secured revolving credit facility	(92,500)	(42,500)
Principal payments on mortgage notes payable	(10,081)	(36,701)
Payments of deferred financing costs	(8,598)	(7,045)
Issuance of preferred stock	138,257	0
Issuance of common stock	(2,950)	144
Dividends paid	(42,677)	(36,702)
Contributions from Parent		0
Distributions to Parent	0	0
Intercompany financing	0	0
Net cash provided by (used in) financing activities	67,701	61,525
Net decrease in cash and cash equivalents	79,540	(11,773)
Cash and cash equivalents, beginning of period	17,101	42,250
Cash and cash equivalents, end of period	96,641	30,477
Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Principal payments on senior unsecured notes	0
Net cash provided by operating activities	36,878	44,798
Cash flows from investing activities:
Acquisitions of real estate	0	0
Acquisition of note receivable		0
Origination of note receivable	0
Preferred equity investment	0
Additions to real estate	0	(7)
Net proceeds from the sale of real estate	0
Investment in Subsidiary		(1,759)
Distribution from Subsidiary	3,345	345
Intercompany financing	(52,041)	(20,764)
Net cash used in investing activities	(48,696)	(22,185)
Cash flows from financing activities:
Proceeds from issuance of senior unsecured notes	0	0
Proceeds from secured revolving credit facility		0
Proceeds from mortgage notes		0
Payments on secured revolving credit facility	0	0
Principal payments on mortgage notes payable	0	0
Payments of deferred financing costs	0	0
Issuance of preferred stock	138,257
Issuance of common stock	(2,950)	144
Dividends paid	(42,677)	(36,702)
Contributions from Parent		0
Distributions to Parent	0	0
Intercompany financing	0	0
Net cash provided by (used in) financing activities	92,630	(36,558)
Net decrease in cash and cash equivalents	80,812	(13,945)
Cash and cash equivalents, beginning of period	15,075
Cash and cash equivalents, end of period	95,887	27,791
Issuers [Member]
Condensed Financial Statements, Captions [Line Items]
Principal payments on senior unsecured notes	(113,750)
Net cash provided by operating activities	0	0
Cash flows from investing activities:
Acquisitions of real estate	0	0
Acquisition of note receivable		0
Origination of note receivable	0
Preferred equity investment	0
Additions to real estate	0	0
Net proceeds from the sale of real estate	0
Investment in Subsidiary		(1,759)
Distribution from Subsidiary	3,345	345
Intercompany financing	(132,883)	(123,775)
Net cash used in investing activities	(129,538)	(125,189)
Cash flows from financing activities:
Proceeds from issuance of senior unsecured notes	200,000	106,000
Proceeds from secured revolving credit facility		0
Proceeds from mortgage notes		0
Payments on secured revolving credit facility	0	0
Principal payments on mortgage notes payable	0	0
Payments of deferred financing costs	(5,408)	(2,989)
Issuance of preferred stock	0
Issuance of common stock	0	0
Dividends paid	0	0
Contributions from Parent		1,759
Distributions to Parent	(3,345)	(345)
Intercompany financing	52,041	20,764
Net cash provided by (used in) financing activities	129,538	125,189
Net decrease in cash and cash equivalents	0	0
Cash and cash equivalents, beginning of period	0
Cash and cash equivalents, end of period	0	0
Combined Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Principal payments on senior unsecured notes	0
Net cash provided by operating activities	0	0
Cash flows from investing activities:
Acquisitions of real estate	(6,175)	(98,050)
Acquisition of note receivable		(22,111)
Origination of note receivable	(26,393)
Preferred equity investment	(6,624)
Additions to real estate	(388)	(1,032)
Net proceeds from the sale of real estate	0
Investment in Subsidiary		0
Distribution from Subsidiary	0	0
Intercompany financing	0	0
Net cash used in investing activities	(39,580)	(121,193)
Cash flows from financing activities:
Proceeds from issuance of senior unsecured notes	0	0
Proceeds from secured revolving credit facility		42,500
Proceeds from mortgage notes		0
Payments on secured revolving credit facility	(92,500)	(42,500)
Principal payments on mortgage notes payable	0	0
Payments of deferred financing costs	(3,011)	(2,582)
Issuance of preferred stock	0
Issuance of common stock	0	0
Dividends paid	0	0
Contributions from Parent		0
Distributions to Parent	0	0
Intercompany financing	135,091	123,775
Net cash provided by (used in) financing activities	39,580	121,193
Net decrease in cash and cash equivalents	0	0
Cash and cash equivalents, beginning of period	0
Cash and cash equivalents, end of period	0	0
Combined Non-Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Principal payments on senior unsecured notes	0
Net cash provided by operating activities	12,333	3,104
Cash flows from investing activities:
Acquisitions of real estate	0	0
Acquisition of note receivable		0
Origination of note receivable	0
Preferred equity investment	0
Additions to real estate	0	0
Net proceeds from the sale of real estate	2,208
Investment in Subsidiary		0
Distribution from Subsidiary	0	0
Intercompany financing	0	0
Net cash used in investing activities	2,208	0
Cash flows from financing activities:
Proceeds from issuance of senior unsecured notes	0	0
Proceeds from secured revolving credit facility		0
Proceeds from mortgage notes		35,829
Payments on secured revolving credit facility	0	0
Principal payments on mortgage notes payable	(10,081)	(36,701)
Payments of deferred financing costs	(179)	(1,474)
Issuance of preferred stock	0
Issuance of common stock	0	0
Dividends paid	0	0
Contributions from Parent		1,759
Distributions to Parent	(3,345)	(345)
Intercompany financing	(2,208)	0
Net cash provided by (used in) financing activities	(15,813)	(932)
Net decrease in cash and cash equivalents	(1,272)	2,172
Cash and cash equivalents, beginning of period	2,026
Cash and cash equivalents, end of period	754	2,686
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
Acquisition of note receivable		0
Origination of note receivable	0
Preferred equity investment	0
Additions to real estate	0	0
Net proceeds from the sale of real estate	0
Investment in Subsidiary		3,518
Distribution from Subsidiary	(6,690)	(690)
Intercompany financing	184,924	144,539
Net cash used in investing activities	178,234	147,367
Cash flows from financing activities:
Proceeds from issuance of senior unsecured notes		0
Proceeds from secured revolving credit facility		0
Proceeds from mortgage notes		0
Payments on secured revolving credit facility	0	0
Principal payments on mortgage notes payable	0	0
Payments of deferred financing costs	0	0
Issuance of preferred stock	0
Issuance of common stock	0	0
Dividends paid	0	0
Contributions from Parent		(3,518)
Distributions to Parent	6,690	690
Intercompany financing	(184,924)	(144,539)
Net cash provided by (used in) financing activities	(178,234)	(147,367)
Net decrease in cash and cash equivalents	0	0
Cash and cash equivalents, beginning of period	0
Cash and cash equivalents, end of period	$ 0	$ 0