Net Income per Common Share - Reconciliation of net income per share computation (Details) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Earnings Per Share [Abstract]
Weighted average shares used for the basic net income per share computation (in shares)	346,476,217	319,945,932	342,214,164	311,556,279
Incremental shares from share-based compensation (in shares)	273,257	317,085	269,054	309,131
Weighted average shares used for diluted net income per share computation (in shares)	346,749,474	320,263,017	342,483,218	311,865,410
Unvested shares from share-based compensation
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from computation (in shares)	59,042	7,892	57,192	6,529
Convertible common partnership units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from computation (in shares)	463,119	463,119	463,119	434,981