Other Liabilities, Net Summary of Other Liabilities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Jan. 01, 2019
Schedule of Other Liabilities [Line Items]
Below Market Lease, Gross	$ 38,577	$ 40,179
Below Market Lease, Accumulated Amortization	26,253	26,081
Lease intangible liabilities, net	12,324	14,098
Prepaid rent	23,612	21,998
Lease assumption liabilities	17,589	23,105
Lease incentive liabilities	20,854	9,317
Lease liabilities related to operating right-of-use assets (1)	28,476	0
Finance lease liability (2)	0	15,704
Security deposits	16,348	17,696
Environmental liabilities	17,898	17,898
Ground lease deferred rent payable	0	3,510		$ 3,500
Net deferred tax liability	5,542	6,878
Dividends payable	34,012	45,193
Derivative agreements, at fair value	17,440	1,723
Other	11,947	4,486
Total other liabilities, net	206,042	181,606
Amortization of Intangible Liabilities	$ 2,500	$ 2,600	$ 2,300
Prudential Global Investment Management (PGIM) [Member]
Schedule of Other Liabilities [Line Items]
Equity Method Investment, Ownership Percentage Sold	50.00%