Summary of Significant Accounting Policies (Additional Information 1) (Details)	1 Months Ended	12 Months Ended
	Oct. 31, 2019	Dec. 31, 2020 USD ($) item	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Summary Of Significant Accounting Policies [Line Items]
Impairment losses		$ 0
Number of reporting units | item		1
Amortization of the deferred financing costs		$ 4,053,000	$ 3,877,000	$ 3,856,000
Write off of deferred loan costs		3,784,000	1,532,000	605,000
Amortization of deferred leasing costs		26,100,000	24,200,000	21,300,000
Aggregate allowance for doubtful accounts		5,400,000	2,300,000
Deferred income		85,351,000	39,169,000	33,200,000
Amortization of deferred revenue		20,300,000	15,200,000	12,500,000
Equity based compensation associated with the acceleration of equity awards		1,800,000		3,100,000
Unsecured Revolving Credit Facility
Summary Of Significant Accounting Policies [Line Items]
Amortization of the deferred financing costs		4,100,000	3,900,000	3,900,000
Write off of deferred loan costs				600,000
Term Loan Maturing 2025
Summary Of Significant Accounting Policies [Line Items]
Aggregate principal amount		$ 400,000,000
Interest rate		4.75%
Write off of deferred loan costs		$ 3,700,000
Revolving Credit Facility Maturing December 17 2023 | Unsecured Credit Facility Two
Summary Of Significant Accounting Policies [Line Items]
Loan term	7 years
Transaction Integration and Impairment Costs
Summary Of Significant Accounting Policies [Line Items]
Impairment losses			11,500,000
Restructuring Charges
Summary Of Significant Accounting Policies [Line Items]
Impairment losses				8,800,000
Company recorded equity-based compensation expense net of repurchased awards and forfeits		27,000,000.0	16,400,000	$ 18,100,000
Rents and Other Receivables
Summary Of Significant Accounting Policies [Line Items]
Amount of the straight-line rent receivable on the balance sheets included in rents and other receivables, net		$ 63,600,000	$ 38,700,000