Segment Information, Geographic Regions, and Major Customers - Additional Information (Detail)		3 Months Ended		9 Months Ended
		Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)	Sep. 30, 2017 USD ($) Segment	Sep. 30, 2016 USD ($)
Segment Reporting Information [Line Items]
Number of operating segments | Segment				3
Gross profit charged to cost of revenue	[1]	$ 120,901,000	$ 120,381,000	$ 345,858,000	$ 356,720,000
Fiery [Member]
Segment Reporting Information [Line Items]
Gross profit percentages		70.20%	72.10%	70.20%	71.20%
Fiery [Member] | Maximum [Member]
Segment Reporting Information [Line Items]
Gross profit charged to cost of revenue		$ 100,000		$ 1,300,000

[1] Includes stock-based compensation expense as follows: 2017 2016 2017 2016 Cost of revenue $ 486 $ 642 $ 1,985 $ 1,873 Research and development 1,640 2,061 7,556 6,987 Sales and marketing 1,108 2,260 5,176 6,159 General and administrative 1,414 3,590 7,824 11,923