Net Income per Common Share - Reconciliation of net income per share computation (Details) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Earnings Per Share [Abstract]
Weighted average shares used for the basic net income per share computation (in shares)	343,515,406	311,032,972	340,061,487	307,293,949
Incremental shares from share-based compensation (in shares)	169,853	289,190	219,778	286,178
Weighted average shares used for diluted net income per share computation (in shares)	343,685,259	311,322,162	340,281,265	307,580,127
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)	122,222	25,171	65,623	29,069
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	420,679