Segment Reporting - NOI from real estate assets sold or held for sale (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting [Abstract]
Rental income from real estate assets sold or held for sale	$ 42,857	$ 109,371	$ 139,880
Operating expenses from real estate assets sold or held for sale	(17,962)	(41,953)	(52,243)
Net operating income from real estate assets sold or held for sale	$ 24,895	$ 67,418	$ 87,637