Segment Information, Geographic Regions, and Major Customers - Additional Information (Detail) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2017 USD ($)	Jun. 30, 2016 USD ($)	Jun. 30, 2017 USD ($) Segment	Jun. 30, 2016 USD ($)
Segment Reporting Information [Line Items]
Number of operating segments | Segment				3
Gross profit charged to cost of revenue	[1]	$ 119,795	$ 120,603	$ 224,956	$ 236,339
Fiery [Member]
Segment Reporting Information [Line Items]
Gross profit charged to cost of revenue		$ 200		$ 1,200
Gross profit percentages		69.80%	71.30%	70.20%	70.80%

[1] Includes stock-based compensation expense as follows: 2017 2016 2017 2016 Cost of revenue $ 665 $ 534 $ 1,499 $ 1,231 Research and development 2,346 1,886 5,916 4,926 Sales and marketing 1,773 1,550 4,068 3,899 General and administrative 2,829 3,135 6,410 8,334