SUMMARIZED CONDENSED CONSOLIDATING INFORMATION (Condensed Consolidating Statement of Cash Flows) (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Condensed Financial Statements, Captions [Line Items]
Principal payments on senior unsecured notes	$ (113,750)	$ 0
Net cash provided by operating activities	22,986	24,087
Cash flows from investing activities:
Acquisitions of real estate	(6,175)	(55,550)
Acquisition of note receivable		(21,176)
Origination of note receivable	(25,244)
Preferred equity investment	(5,144)	0
Additions to real estate	(226)	(730)
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	(34,581)	(77,456)
Cash flows from financing activities:
Proceeds from issuance of senior unsecured notes	200,000	0
Proceeds from secured revolving credit facility	0	42,500
Proceeds from mortgage notes	0	21,947
Payments on secured revolving credit facility	(92,500)	0
Principal payments on mortgage notes payable	(9,193)	(22,464)
Payments of deferred financing costs	(5,378)	(3,435)
Issuance of preferred stock	138,345	0
Issuance of common stock	(2,851)	144
Dividends paid	(27,409)	(24,463)
Contributions from Parent		0
Distributions to Parent	0	0
Intercompany financing	0	0
Net cash provided by (used in) financing activities	87,264	14,229
Net decrease in cash and cash equivalents	75,669	(39,140)
Cash and cash equivalents, beginning of period	17,101	42,250
Cash and cash equivalents, end of period	92,770	3,110
Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Principal payments on senior unsecured notes	0
Net cash provided by operating activities	12,200	22,525
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		(1,449)
Distribution from Subsidiary	1,920	345
Intercompany financing	(46,072)	(37,255)
Net cash used in investing activities	(44,152)	(38,359)
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
Principal payments on mortgage notes payable	0	0
Payments of deferred financing costs	0	0
Issuance of preferred stock	138,345
Issuance of common stock	(2,851)	144
Dividends paid	(27,409)	(24,463)
Contributions from Parent		0
Distributions to Parent	0	0
Intercompany financing	0	0
Net cash provided by (used in) financing activities	108,085	(24,319)
Net decrease in cash and cash equivalents	76,133	(40,153)
Cash and cash equivalents, beginning of period	15,075
Cash and cash equivalents, end of period	91,208	1,583
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		(1,449)
Distribution from Subsidiary	1,920	345
Intercompany financing	(127,163)	(37,255)
Net cash used in investing activities	(125,243)	(38,359)
Cash flows from financing activities:
Proceeds from issuance of senior unsecured notes	200,000
Proceeds from secured revolving credit facility		0
Proceeds from mortgage notes		0
Payments on secured revolving credit facility	0
Principal payments on mortgage notes payable	0	0
Payments of deferred financing costs	(5,159)	0
Issuance of preferred stock	0
Issuance of common stock	0	0
Dividends paid	0	0
Contributions from Parent		1,449
Distributions to Parent	(1,920)	(345)
Intercompany financing	46,072	37,255
Net cash provided by (used in) financing activities	125,243	38,359
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)	(55,550)
Acquisition of note receivable		(21,176)
Origination of note receivable	(25,244)
Preferred equity investment	(5,144)
Additions to real estate	(226)	(730)
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	(36,789)	(77,456)
Cash flows from financing activities:
Proceeds from issuance of senior unsecured notes	0
Proceeds from secured revolving credit facility		42,500
Proceeds from mortgage notes		0
Payments on secured revolving credit facility	(92,500)
Principal payments on mortgage notes payable	0	0
Payments of deferred financing costs	(82)	(2,299)
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	129,371	37,255
Net cash provided by (used in) financing activities	36,789	77,456
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	10,786	1,562
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
Proceeds from secured revolving credit facility		0
Proceeds from mortgage notes		21,947
Payments on secured revolving credit facility	0
Principal payments on mortgage notes payable	(9,193)	(22,464)
Payments of deferred financing costs	(137)	(1,136)
Issuance of preferred stock	0
Issuance of common stock	0	0
Dividends paid	0	0
Contributions from Parent		1,449
Distributions to Parent	(1,920)	(345)
Intercompany financing	(2,208)	0
Net cash provided by (used in) financing activities	(13,458)	(549)
Net decrease in cash and cash equivalents	(464)	1,013
Cash and cash equivalents, beginning of period	2,026
Cash and cash equivalents, end of period	1,562	1,527
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		2,898
Distribution from Subsidiary	(3,840)	(690)
Intercompany financing	173,235	74,510
Net cash used in investing activities	169,395	76,718
Cash flows from financing activities:
Proceeds from secured revolving credit facility		0
Proceeds from mortgage notes		0
Payments on secured revolving credit facility	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		(2,898)
Distributions to Parent	3,840	690
Intercompany financing	(173,235)	(74,510)
Net cash provided by (used in) financing activities	(169,395)	(76,718)
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