Supplemental Detail for Certain Components of Consolidated Balance Sheets - Lease Intangible Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Lease intangible assets, net
Total acquired lease intangible assets, net	$ 2,156,008	$ 1,710,655
In-place leases
Lease intangible assets, net
Lease intangible assets, gross	2,183,199	1,840,704
Accumulated amortization of lease intangible assets	(739,276)	(744,375)
Above-market leases
Lease intangible assets, net
Lease intangible assets, gross	993,608	866,567
Accumulated amortization of lease intangible assets	$ (281,523)	$ (252,241)