Balance Sheet Details - Schedule of Minimum Future Rental Revenues on Operating Leases (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Operating Leases, Future Minimum Payments Receivable [Abstract]
Remainder of 2018	$ 1,483
2019	2,189
2020	2,678
2021	384
2022	432
Total	$ 7,166	$ 4,100

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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-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

+ Details

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- References

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- Definition

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

+ References

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- Definition

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

+ References

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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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