Consolidated Financial Statement Components - Other Non-current Liabilities (Detail) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Supplemental Balance Sheet Information [Abstract]
Asset retirement obligations	$ 7,580	$ 7,472
Deferred rent and other	872	942
Dividends payable	168	507
Total other long-term liabilities	$ 8,620	$ 8,921

Amount of deferred compensation paid by a tenant to the property owner use or occupancy of a property.

No definition available.

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- Definition

Dividends payable to employees for their services who are part of a long term incentive plan.

+ References

No definition available.

+ Details

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- Definition

Supplemental Balance Sheet Information [Abstract]

+ References

No definition available.

+ Details

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- Definition

Noncurrent portion of the carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 410
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849

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- Definition

Amount of liabilities classified as other, due after one year or the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.24)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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