SCHEDULE III Real Estate and Accumulated Depreciation - Investment in Real Estate (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]
Balance at beginning of year	$ 3,615,025	$ 3,563,304	$ 2,570,390
Acquisitions	0	0	814,765
Improvements	27,911	53,373	179,787
Disposals	(929)	(1,652)	(1,638)
Balance at end of year	$ 3,642,007	$ 3,615,025	$ 3,563,304