Deferred Charges and Other Assets, net - Schedule of deferred charges and other assets, net (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Leasing	$ 141,724		$ 162,652
Intangible assets:
In-place lease values	69,874		74,298
Leasing commissions and legal costs	19,517		21,096
Above-market leases	77,740		80,120
Deferred tax assets	28,528		30,767
Deferred compensation plan assets	60,834		62,874
Other assets	62,208		61,553
Deferred charges and other assets, gross	460,425		493,360
Less accumulated amortization	(166,635)		(186,401)
Deferred charges and other assets, net	293,790		306,959
In-place lease values, leasing commissions and legal costs
Finite-Lived Intangible Assets [Line Items]
Accumulated amortization for intangible assets	44,802		$ 47,249
Amortization expense for intangible assets	$ 2,203	$ 3,719