Supplemental Detail for Certain Components of Consolidated Balance Sheets - Acquired Lease Intangible Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Acquired lease intangible assets, net
Acquired in-place leases	$ 1,210,506	$ 1,164,075
Accumulated amortization of acquired in-place leases	(382,307)	(358,040)
Acquired above-market leases	375,724	365,005
Accumulated amortization of acquired above-market leases	(95,827)	(88,720)
Acquired lease intangible assets	$ 1,108,096	$ 1,082,320