Information about Geographic Areas - Classification of Revenue by Geography (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 from External Customers and Long-Lived Assets [Line Items]
Total revenue	$ 10,881	$ 7,218	$ 19,632	$ 12,894
North America [Member] | Reportable geographical components [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	7,387	5,218	13,376	9,695
Europe & Middle East [Member] | Reportable geographical components [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	2,130	1,494	3,893	2,110
Asia Pacific [Member] | Reportable geographical components [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	$ 1,364	$ 506	$ 2,363	$ 1,089