Summary of Significant Accounting Policies - Adoption of New Lease Standard (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jan. 01, 2019	Dec. 31, 2018
Operating Leases
Operating lease right-of-use assets, net	$ 62,380	$ 64,075
Intangible assets	33,083	32,491	$ 56,021
Assets	3,925,740		3,972,833
Operating lease obligations, current and noncurrent	56,696	58,663
Deferred rent			12,986
Liabilities	1,187,674		1,261,662
Finance Leases
Finance lease right-of-use assets, net	54,991	55,727
Land	605,581	605,388	611,993
Building and improvements, net		2,118,558
Finance lease obligations, current and noncurrent	$ 27,121	27,010
Leases
Leases Initial Maximum Term Not Recorded On Balance Sheet	12 months
Leases Initial Minimum Term Recorded Right Of Use Assets	12 months
Buildings and improvements
Finance Leases
Finance lease right-of-use assets, net	$ 58,799
Land [Member]
Finance Leases
Finance lease right-of-use assets, net	$ 6,605
Balance Pre-Adoption
Operating Leases
Intangible assets			50,889
Deferred rent			12,986
Finance Leases
Land			611,993
Building and improvements, net			2,167,680
Capital lease obligations, current and noncurrent			$ 27,010
New Lease Standard Adjustments
Operating Leases
Operating lease right-of-use assets, net		64,075
Intangible assets		(18,398)
Assets		45,677
Operating lease obligations, current and noncurrent		58,663
Deferred rent		(12,986)
Liabilities		45,677
Finance Leases
Finance lease right-of-use assets, net		55,727
Land		(6,605)
Building and improvements, net		(49,122)
Finance lease obligations, current and noncurrent		27,010
Capital lease obligations, current and noncurrent		$ (27,010)