Stock Compensation Summary of Information about LTIP Units and Shares of Restricted Common Stock Outstanding (Details) (USD $)	3 Months Ended			3 Months Ended			3 Months Ended
	Mar. 31, 2014 LTIP Units	Mar. 31, 2014 LTIP Units Total Vested Units	Dec. 31, 2013 LTIP Units Total Vested Units	Mar. 31, 2014 LTIP Units Total Unvested Units	Mar. 31, 2014 Restricted Shares	Dec. 31, 2013 Restricted Shares	Mar. 31, 2014 Market-based LTIP Units	Mar. 31, 2014 Market-based LTIP Units Total Unvested Units
Stock-Compensation, Shares, Outstanding [Roll Forward]
Total Outstanding Units, Beginning Balance	524,183	349,941	349,941	174,242	40,369	40,369	338,094	338,094
Total Outstanding Units, Granted	8,994			8,994
Total Outstanding Units, Ending Balance	533,177	349,941	349,941	183,236	40,369	40,369	338,094	338,094
Stock-Compensation, Weighted Average Grant Date Fair Value [Abstract]
Weighted-Average Grant Date Fair Value, Beginning Balance	$ 16.98				$ 21.00	$ 21.00	$ 5.58
Weighted-Average Grant Date Fair Value, Granted	$ 14.63
Weighted-Average Grant Date Fair Value, Ending Balance	$ 16.94				$ 21.00	$ 21.00	$ 5.58