Other Assets, Net Schedule of Identified Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Total identified intangibles assets	$ 116,001	$ 152,895
Total accumulated amortization	26,142	26,428
Identified intangible assets, net	89,859	126,467
In-place leases
Finite-Lived Intangible Assets [Line Items]
Total identified intangibles assets	38,216	72,086
Total accumulated amortization	11,602	20,015
Above-market real estate leases
Finite-Lived Intangible Assets [Line Items]
Total identified intangibles assets	9,414	12,066
Total accumulated amortization	2,405	1,600
Below-market ground leases
Finite-Lived Intangible Assets [Line Items]
Total identified intangibles assets	2,215	2,547
Total accumulated amortization	1,448	1,365
Option to enter into ground lease
Finite-Lived Intangible Assets [Line Items]
Total identified intangibles assets	17,090	17,090
Total accumulated amortization	251	78
Management and leasing contracts
Finite-Lived Intangible Assets [Line Items]
Total identified intangibles assets	48,900	48,900
Total accumulated amortization	10,297	3,209
Other
Finite-Lived Intangible Assets [Line Items]
Total identified intangibles assets	166	206
Total accumulated amortization	$ 139	$ 161