Acquired Intangible Assets - Summary of Acquired Technology Intangible Assets Subject to Amortization (Detail) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Intangible Assets Net Excluding Goodwill [Abstract]
Acquired Technology	$ 10,668	$ 10,668
Less: accumulated amortization	(3,733)	(2,677)
Total acquired technology, net	$ 6,935	$ 7,991	[1]

[1] The Condensed Consolidated Balance Sheet as of December 31, 2015 has been derived from the audited consolidated financial statements at that date but does not include all of the information and footnotes required by generally accepted accounting principles for complete financial statements.