Geographic Information and Major Customer and Product Data - Summary of Revenues within Geographic Areas (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Revenues based on customer's location:
Revenues	$ 24,616	$ 17,837	$ 42,071	$ 30,417
United States [Member]
Revenues based on customer's location:
Revenues	14,814	10,766	23,884	17,293
EMEA [Member]
Revenues based on customer's location:
Revenues	7,605	5,382	14,548	10,287
Rest of the World [Member]
Revenues based on customer's location:
Revenues	$ 2,197	$ 1,689	$ 3,639	$ 2,837