Segment Information - Geographical Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 44,780	$ 50,805	$ 140,516	$ 144,568
Property and equipment, net	6,828		6,828		$ 9,786
Total Intangible Assets, Net	33,509		33,509		43,224
UNITED STATES
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	18,353	17,476	57,997	52,207
Property and equipment, net	3,381		3,381		4,558
Total Intangible Assets, Net					43,224
Foreign Countries [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	26,427	33,329	82,519	92,361
Property and equipment, net	3,447		3,447		5,228
Other North America
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	186	254	473	1,957
Property and equipment, net	308		308		672
Asia Pacific [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	19,206	21,303	58,016	54,398
Property and equipment, net	1,447		1,447		2,438
CHINA [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	5,859	7,172	26,414	22,152
Property and equipment, net	1,447		1,447		2,427
INDIA
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	6,549	5,878	12,494	7,505
Property and equipment, net	1,690		1,690		2,115
Other Asia Pacific [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	6,798	8,253	19,108	24,741
Property and equipment, net	0		0		11
Netherlands [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	3,404	7,861	10,591	19,030
Other EMEA [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	3,631	3,911	13,439	16,976
Property and equipment, net	2		2		3
Europe, the Middle East and Africa [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	7,035	$ 11,772	24,030	$ 36,006
Property and equipment, net	$ 1,692		$ 1,692		$ 2,118