Segment Information - Geographical Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 61,288	$ 47,049	$ 116,434	$ 95,736
Property and equipment, net	5,052		5,052		$ 6,134
Total Intangible Assets, Net	23,949		23,949		30,322
UNITED STATES
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	44,275	18,472	82,040	39,644
Property and equipment, net	2,747		2,747		3,061
Total Intangible Assets, Net					30,322
Foreign Countries [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	17,013	28,577	34,394	56,092
Property and equipment, net	2,305		2,305		3,073
Other North America
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	39	242	117	287
Property and equipment, net	205		205		257
Asia Pacific [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	6,461	21,625	14,079	38,810
Property and equipment, net	777		777		1,231
CHINA [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	2,335	8,862	5,665	20,555
Property and equipment, net	777		777		1,231
India [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	1,781	5,186	3,750	5,935
INDIA
Revenues from External Customers and Long-Lived Assets [Line Items]
Property and equipment, net	1,323		1,323		1,584
Other Asia Pacific [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	2,345	7,577	4,664	12,320
Netherlands [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	7,838	2,825	15,073	7,187
Other EMEA [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	2,675	3,885	5,125	9,808
Property and equipment, net	0		0		1
Europe, the Middle East and Africa [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	10,513	$ 6,710	20,198	$ 16,995
Property and equipment, net	$ 1,323		$ 1,323		$ 1,585