Leases - Lease Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Fixed income from operating leases	$ 1,087,683	$ 943,638	$ 853,545
Variable income from operating leases	290,701	238,470	215,957
Interest income from direct financing leases	$ 8,702	$ 9,720	$ 16,666