Condensed Consolidated Statement of Stockholders' Equity (USD $) In Thousands, except Share data	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Cumulative Distributions in Excess of Net Income [Member]
Balance at Dec. 31, 2010	$ 177,533	$ 251	$ 177,275	$ 7
Common Stock, Shares, Outstanding at Dec. 31, 2010		25,061,072
Net income	1,248			1,248
Amortization of stock based compensation	1,142		1,142
Stock Issuance, Shares		23,662
Stock Issuance, Value	0	0	0
Balance at Mar. 31, 2011	179,923	251	178,417	1,255
Common Stock, Shares, Outstanding at Mar. 31, 2011		25,084,734
Balance at Dec. 31, 2011	326,573	369	344,995	(18,791)
Common Stock, Shares, Outstanding at Dec. 31, 2011	36,891,712	36,891,712
Net income	4,405			4,405
Amortization of stock based compensation	2,203		2,203
Stock Issuance, Shares		117,890
Stock Issuance, Value	(370)	1	(371)
Common dividends ($0.33 per share)	(12,213)			(12,213)
Balance at Mar. 31, 2012	$ 320,598	$ 370	$ 346,827	$ (26,599)
Common Stock, Shares, Outstanding at Mar. 31, 2012	37,009,602	37,009,602