Leases - Schedule of Rental Revenues (Parenthetical) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Disaggregation Of Revenue [Line Items]
Non-cash write-offs, primarily for straight-line rent receivables		$ 11,309		$ 11,309
Uncollectible accounts receivable		2,051		2,051
Variable rental revenues	$ 14,987	$ 10,121	$ 27,504	$ 24,870
Tenant Lease Termination [Member]
Disaggregation Of Revenue [Line Items]
Variable rental revenues	$ 5,051		$ 5,051