Segment Information - Company's Revenue by Geographic Region, Based on Customer's Location (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Revenues from External Customers and Long-Lived Assets [Line Items]
Total net revenue	$ 83,892	$ 68,407	$ 230,635	$ 186,053
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total net revenue	42,560	37,734	116,906	101,613
EMEA [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total net revenue	15,836	13,210	44,458	36,385
APAC [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total net revenue	18,791	11,834	47,093	33,811
Other [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total net revenue	$ 6,705	$ 5,629	$ 22,178	$ 14,244