Company Operations and Summary of Significant Accounting Policies - Summary of Intangible Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Goodwill And Intangible Assets [Line Items]
Goodwill Net	$ 83,834	$ 80,730
Finite-Lived intangible asset, useful life	3 years 6 months
Accumulated Amortization	$ (56,367)	(46,853)
Total	27,639
Gross intangible asset including Goodwill	84,006	78,686
Net intangible asset including Goodwill	$ 27,639	31,833
Purchased technology [Member]
Goodwill And Intangible Assets [Line Items]
Finite-Lived intangible asset, useful life	8 years 4 months 24 days
Gross Assets	$ 53,600	52,560
Accumulated Amortization	(41,369)	(34,911)
Total	$ 12,231	17,649
Customer relationships [Member]
Goodwill And Intangible Assets [Line Items]
Finite-Lived intangible asset, useful life	7 years 6 months 30 days
Gross Assets	$ 7,157	7,171
Accumulated Amortization	(5,928)	(4,972)
Total	$ 1,229	2,199
License agreements [Member]
Goodwill And Intangible Assets [Line Items]
Finite-Lived intangible asset, useful life	10 years 4 months 24 days
Gross Assets	$ 6,009	5,512
Accumulated Amortization	(3,222)	(2,542)
Total	$ 2,787	2,970
Patent and trademark costs [Member]
Goodwill And Intangible Assets [Line Items]
Finite-Lived intangible asset, useful life	12 years
Gross Assets	$ 11,240	10,530
Accumulated Amortization	(3,522)	(2,588)
Total	$ 7,718	7,942
Software development costs [Member]
Goodwill And Intangible Assets [Line Items]
Finite-Lived intangible asset, useful life	5 years
Gross Assets	$ 6,000	2,913
Accumulated Amortization	(2,326)	(1,840)
Total	$ 3,674	$ 1,073