Future Minimum Base Rents and Lease Payments - Future Minimum Base Rents (Details) $ in Thousands	Dec. 31, 2018 USD ($)
Operating Leases, Future Minimum Payments Receivable [Abstract]
2019	$ 529,986
2020	518,701
2021	506,488
2022	464,485
2023	415,149
Thereafter	1,431,723
Total	3,866,532
Non-Cancelable Leases
Operating Leases, Future Minimum Payments Receivable [Abstract]
2019	524,376
2020	503,957
2021	481,430
2022	425,034
2023	373,786
Thereafter	1,360,511
Total	3,669,094
Subject to Early Termination Options
Operating Leases, Future Minimum Payments Receivable [Abstract]
2019	5,610
2020	14,744
2021	25,058
2022	39,451
2023	41,363
Thereafter	71,212
Total	$ 197,438

Future minimum rental payments in aggregate as of the balance sheet date under operating leases.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=84164653&loc=d3e41551-112718

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- Definition

Future rental payments receivable within one year of the balance sheet date under an operating lease.

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- Definition

Future rental payments receivable within the fifth year from the balance sheet date under an operating lease.

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- Definition

Future rental payments receivable within the fourth year from the balance sheet date under an operating lease.

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- Definition

Future rental payments receivable within the third year from the balance sheet date under an operating lease.

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- Definition

Future rental payments receivable within the second year from the balance sheet date under an operating lease.

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- Definition

Future minimum lease payments receivable under operating leases for periods greater than five years following the balance sheet date.

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