Supplemental Detail for Certain Components of Consolidated Balance Sheets - Lease Intangible Assets, Net (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Lease intangible assets, net
Total acquired lease intangible assets, net	$ 1,493,383	$ 1,199,597
In-place leases
Lease intangible assets, net
Lease intangible assets, gross	1,612,153	1,321,979
Accumulated amortization of lease intangible assets	(627,676)	(546,573)
Above-market leases
Lease intangible assets, net
Lease intangible assets, gross	710,275	583,109
Accumulated amortization of lease intangible assets	$ (201,369)	$ (158,918)