Commitments and Contingencies - Future Minimum Lease Payments to the Company Under Noncancelable Operating Leases (Details) $ in Thousands	Dec. 31, 2017 USD ($) property
Commitments and Contingencies Disclosure [Abstract]
Number of TRS Leases Expiring in 2018	1
Number of TRS Leases Expiring in 2019 \| property	26
Number of TRS Leases Expiring in 2022 \| property	7
Number of Real Estate Properties \| property	36
2018	$ 86,593
2019	75,901
2020	0
2021	0
2022	0
Thereafter (1)	0
Total	$ 162,494
Number of TRS Leases expiring Thereafter \| property	1

Number of TRS Leases Expiring in 2018

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Number of TRS Leases Expiring in 2019

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- Definition

Number of TRS Leases Expiring in 2022

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Number of TRS Leases expiring Thereafter

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Amount of lease payments to be received by lessor for operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 30
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=77888428&loc=SL77919396-209981

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Amount of lease payments to be received by lessor in fifth fiscal year following latest fiscal year for operating lease. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest statement of financial position date.

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Amount of lease payments to be received by lessor in fourth year following latest fiscal year for operating lease. Excludes interim and annual periods when interim periods are reported on rolling approach, from latest statement of financial position date.

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Amount of lease payments to be received by lessor in remainder of fiscal year following latest fiscal year for operating lease. Excludes interim and annual periods when interim periods are reported on rolling approach, from latest statement of financial position date.

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Amount of lease payments to be received by lessor after fifth fiscal year following latest statement of financial position date for operating lease. Excludes interim and annual periods when interim periods are reported on rolling approach, from latest statement of financial position date.

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Amount of lease payments to be received by lessor in third fiscal year following latest fiscal year for operating lease. Excludes interim and annual periods when interim periods are reported on rolling approach, from latest statement of financial position date.

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Amount of lease payments to be received by lessor in second fiscal year following latest fiscal year for operating lease. Excludes interim and annual periods when interim periods are reported on rolling approach, from latest statement of financial position date.

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The number of real estate properties owned as of the balance sheet date.

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