Supplemental Detail for Certain Components of Consolidated Balance Sheets - Lease Intangible Assets, Net (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Lease intangible assets, net
Total acquired lease intangible assets, net	$ 1,610,457	$ 1,493,383
In-place leases
Lease intangible assets, net
Lease intangible assets, gross	1,730,957	1,612,153
Accumulated amortization of lease intangible assets	(717,443)	(627,676)
Above-market leases
Lease intangible assets, net
Lease intangible assets, gross	835,039	710,275
Accumulated amortization of lease intangible assets	$ (238,096)	$ (201,369)