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Geographic, Customer and Supplier Information - Sales Details of Customers Locations in Four Geographic Regions (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Geographic And Business Segment Information [Line Items]
Revenue	$ 50,889	$ 60,027	$ 65,393	$ 65,135	$ 62,426	$ 52,633	$ 47,654	$ 38,823	$ 241,443	$ 201,537	$ 155,047
Gross profit	33,648	$ 36,272	$ 38,498	$ 37,674	35,354	$ 35,595	$ 31,021	$ 25,796	146,092	127,766	99,871
Long-lived assets	122,284				38,220				122,284	38,220	43,898
Europe, Middle East, Africa (EMEA) [Member]
Geographic And Business Segment Information [Line Items]
Revenue									164,180	129,385	95,794
Gross profit									94,369	80,267	62,529
Long-lived assets	29,646				35,086				29,646	35,086	40,198
United States [Member]
Geographic And Business Segment Information [Line Items]
Revenue									11,723	12,098	11,781
Gross profit									9,940	10,143	9,477
Long-lived assets	92,568				3,031				92,568	3,031	3,496
Asia Pacific [Member]
Geographic And Business Segment Information [Line Items]
Revenue									47,156	42,365	27,356
Gross profit									29,015	23,996	14,552
Long-lived assets	19				31				19	31	43
Other Countries [Member]
Geographic And Business Segment Information [Line Items]
Revenue									18,384	17,689	20,116
Gross profit									12,768	13,360	13,313
Long-lived assets	$ 51				$ 72				$ 51	$ 72	$ 161

X

- Definition

Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1,2)
-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 41
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=51669610&loc=d3e9038-108599

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Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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Geographic And Business Segment Information [Line Items]

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