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Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Schedule Of Income Tax [Line Items]
Unrecognized stock-based compensation	$ 17,863
Foreign Subsidiaries [Member]
Schedule Of Income Tax [Line Items]
Deferred tax asset offset by a valuation allowance	$ 2,381	$ 2,051

X

- Definition

Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319

+ Details

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Balance Type:	credit
Period Type:	instant

X

- Definition

Deferred Tax Assets Tax Deferred Expense Unrecognized Stock Based Compensation

+ References

No definition available.

+ Details

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X

- Definition

Schedule Of Income Tax [Line Items]

+ References

No definition available.

+ Details

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X

- Details

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