Information about Geographic Areas - Long-lived Assets by Geographic Area (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012
Segment Reporting Information [Line Items]
Long-lived assets	$ 75,560		$ 42,342
North America
Segment Reporting Information [Line Items]
Long-lived assets	52,937		30,209
EMEA
Segment Reporting Information [Line Items]
Long-lived assets	18,017	[1]	10,513	[1]
Asia Pacific and other
Segment Reporting Information [Line Items]
Long-lived assets	$ 4,606		$ 1,620

[1] Europe, the Middle East and Africa, or EMEA