Segment Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015 segment	Mar. 31, 2014	Dec. 31, 2014
Revenues from External Customers and Long-Lived Assets [Line Items]
Number of reportable segments	1
Revenue:	$ 179,045	$ 117,207
Long lived assets	72,787		71,558
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue:	123,153	92,993
Long lived assets	68,235		67,727
Other Americas
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue:	3,604	3,207
Europe, Middle East and Africa
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue:	40,090	11,714
Asia Pacific
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue:	12,198	9,293
International
Revenues from External Customers and Long-Lived Assets [Line Items]
Long lived assets	$ 4,552		$ 3,831