Stockholders’ Equity of the Company and Partners' Capital of the Operating Partnership - Summary of Dividends/Distributions (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Class of Stock [Line Items]
Total Common Stock Dividends / Unit Distributions	$ 130,943	$ 119,522	$ 111,478
Common Stock / Operating Partnership Units
Class of Stock [Line Items]
Total Common Stock Dividends / Unit Distributions	$ 130,943	$ 119,522	$ 111,478