Geographic Information and Major Customer and Product Data - Summary of Revenues within Geographic Areas (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Revenues based on customer's location:
Revenues	$ 17,455	$ 12,580
United States [Member]
Revenues based on customer's location:
Revenues	9,070	6,527
EMEA [Member]
Revenues based on customer's location:
Revenues	6,943	4,904
Rest of the World [Member]
Revenues based on customer's location:
Revenues	$ 1,442	$ 1,149