Segment Information - Geographical Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 55,146	$ 48,687
Property and equipment, net	5,400		$ 6,134
Total Intangible Assets, Net	27,136		30,322
UNITED STATES
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	37,765	21,172
Property and equipment, net	2,717		3,061
Total Intangible Assets, Net			30,322
Foreign Countries [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	17,381	27,515
Property and equipment, net	2,683		3,073
Other North America
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	78	45
Property and equipment, net	238		257
Asia Pacific [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	7,618	17,185
Property and equipment, net	994		1,231
CHINA [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	3,330	11,693
Property and equipment, net	994		1,231
INDIA
Revenues from External Customers and Long-Lived Assets [Line Items]
Property and equipment, net	1,450		1,584
Other Asia Pacific [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	4,288	5,492
Netherlands [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	7,235	4,362
Other EMEA [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	2,450	5,923
Property and equipment, net	1		1
Europe, the Middle East and Africa [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	9,685	$ 10,285
Property and equipment, net	$ 1,451		$ 1,585