CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (USD $) In Thousands	Total	Series A Cumulative Redeemable Preferred Stock [Member]	Common Stock [Member]	Additional Common and Preferred Paid-in Capital [Member]	Accumulated Deficit and Distributions [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total Stockholder's Equity [Member]	Noncontrolling Interests [Member]
Balance at Dec. 31, 2010	$ 246,790	$ 0	$ 307	$ 248,515	$ (5,491)	$ (172)	$ 243,159	$ 3,631
Amortization of restricted stock awards and operating partnership units	842	0	0	218	0	0	218	624
Dividends on common stock	(19,649)	0	0	0	(19,649)	0	(19,649)	0
Dividends to noncontrolling interests	(280)	0	0	0	0	0	0	(280)
Transaction Cost	0	0	0	(134)	0	0	(134)	0
Change in fair value of interest rate derivatives	(215)	0	0	0	0	(215)	(215)	0
Foreign currency translation	0
Net income	3,781	0	0	0	3,730	0	3,730	51
Balance at Dec. 31, 2011	231,135	0	307	248,599	(21,410)	(387)	227,109	4,026
Net proceeds of sale of preferred stock	54,893	23	0	54,870	0	0	54,893	0
Net proceeds of sale of common stock	72,162	0	75	72,087	0	0	72,162	0
Issuance of restricted stock	0	0	4	(4)	0	0	0	0
Amortization of restricted stock awards and operating partnership units	2,252	0	0	1,628	0	0	1,628	624
Dividends on preferred stock	(4,114)	0	0	0	(4,114)	0	(4,114)	0
Dividends on common stock	(22,275)	0	0	0	(22,275)	0	(22,275)	0
Dividends to noncontrolling interests	(281)	0	0	0	0	0	0	(281)
Transaction Cost	0
Change in fair value of interest rate derivatives	332	0	0	0	0	329	329	3
Foreign currency translation	0
Net income	10,798	0	0	0	10,752	0	10,752	46
Balance at Dec. 31, 2012	344,902	23	386	377,180	(37,047)	(58)	340,484	4,418
Net proceeds of sale of preferred stock	91,282	38	0	91,244	0	0	91,282	0
Net proceeds of sale of common stock	299,719	0	255	299,464	0	0	299,719	0
Equity portion of issuance of convertible notes	3,207	0	0	3,207	0	0	3,207	0
Issuance of restricted stock	0	0	4	(4)	0	0	0	0
Amortization of restricted stock awards and operating partnership units	3,300	0	0	2,805	0	0	2,805	495
Dividends on preferred stock	(6,183)	0	0	0	(6,183)	0	(6,183)	0
Dividends on common stock	(42,565)	0	0	0	(42,565)	0	(42,565)	0
Dividends to noncontrolling interests	(287)	0	0	0	0	0	0	(287)
Transaction Cost	1,121
Change in fair value of interest rate derivatives	58	0	0	0	0	58	58	1
Foreign currency translation	(71)	0	0	0	0	(71)	(71)	0
Net income	1,618	0	0	0	1,652	0	1,652	(34)
Balance at Dec. 31, 2013	$ 694,981	$ 61	$ 645	$ 773,896	$ (84,143)	$ (71)	$ 690,388	$ 4,593