Consolidated Statements of Equity (USD $) In Thousands, except Share data	Total	Predecessor	Common Shares	Additional Paid-in Capital	Accumulated dividends in excess of net income	Noncontrolling Interests - Unitholders in the Operating Partnership	Noncontrolling Interests - Unitholders in the Operating Partnership Predecessor
Beginning Balance at Dec. 31, 2009	$ 170,963	$ 133,173					$ 37,790
Contributions	7,665	7,665
Distributions	(25,681)	(23,343)					(2,338)
Net income	2,174	4,379					(2,205)
Ending Balance at Dec. 31, 2010	155,121	121,874					33,247
Distributions	(39,960)	(33,435)					(6,525)
Net income	19,324	16,995			3,399	1,388	(2,458)
Proceeds from sale of common stock, net (in shares)			31,625,000
Proceeds from sale of common stock, net	588,011		316	587,695
Cash paid to non-accredited investors	(6,075)						(6,075)
Issuance of restricted stock (in shares)			630,663
Issuance of restricted stock			6	(6)
Forfeiture of restricted stock (in shares)			(1,951)
Issuance of common shares and units for acquisition of properties (in shares)			262,486
Issuance of common shares and units for acquisition of properties	33,854		3	6,081		27,770
Proceeds from private placement	5,410					5,410
Notes receivable from affiliate settled in common units	(21,797)					(21,797)
Notes payable to affiliates settled in common units	828					828
Dividends declared and paid	(46,123)				(31,406)	(14,717)
Stock-based compensation	2,615			2,615
Distribution of investment in joint venture not acquired	(11,480)	(9,084)					(2,396)
Exchange of owners' equity for common stock and units, Shares			6,767,598
Exchange of owners' equity for common stock and units		(96,350)	68	57,260		54,815	(15,793)
Ending Balance at Dec. 31, 2011	679,728		393	653,645	(28,007)	53,697
Ending Balance (in shares) at Dec. 31, 2011	39,283,796		39,283,796
Net income	51,601				35,467	16,134
Conversion of operating partnership units (in shares)			372,654
Conversion of operating partnership units			4	7,092		(7,096)
Issuance of restricted stock (in shares)			10,015
Forfeiture of restricted stock (in shares)			(2,253)
Dividends declared and paid	(48,452)				(33,085)	(15,367)
Stock-based compensation	2,852			2,852
Ending Balance at Dec. 31, 2012	$ 685,729		$ 397	$ 663,589	$ (25,625)	$ 47,368
Ending Balance (in shares) at Dec. 31, 2012	39,664,212		39,664,212