Segment Information - Company's Net Revenue by Geographic Region, Based on Customer's Location (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Revenues from External Customers and Long-Lived Assets [Line Items]
Total net revenue	$ 31,516	$ 28,585
Americas [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total net revenue	18,076	18,179
EMEA [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total net revenue	8,210	6,279
APAC [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total net revenue	$ 5,230	$ 4,127