Segment Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014 segment	Sep. 30, 2013	Dec. 31, 2013
Revenues from External Customers and Long-Lived Assets [Line Items]
Number of reportable segments			1
Revenue	$ 155,463	$ 101,625	$ 410,617	$ 246,458
Long lived assets	66,991		66,991		67,204
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	123,847	83,301	318,989	200,293
Long lived assets	63,203		63,203		63,557
Other Americas
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	1,581	2,350	5,797	3,797
Europe, Middle East and Africa
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	21,485	10,922	53,827	28,333
Asia Pacific
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	8,550	5,052	32,004	14,035
International
Revenues from External Customers and Long-Lived Assets [Line Items]
Long lived assets	$ 3,788		$ 3,788		$ 3,647