Summary of Significant Accounting Policies and Procedures and Recent Accounting Pronouncements - Net Income Per Common Share (Details) - shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Weighted average shares used for the basic net income per share computation	255,066,500	235,767,932	218,390,885
Incremental shares from share-based compensation	240,728	123,436	59,978
Weighted average shares used for diluted net income per share computation	255,624,250	236,208,390	218,767,885
Convertible Partnership Units
Weighted average shares used for diluted net income per share computation	317,022	317,022	317,022
Unvested shares from share-based compensation that were anti-dilutive	198,429	417,060	523,847
Unvested Shares
Unvested shares from share-based compensation that were anti-dilutive	475	106,103	51,749