Segment Information - Geographical Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 50,805	$ 54,109	$ 144,568	$ 187,725
Property and equipment, net	10,597		10,597		14,854
Total Intangible Assets, Net	46,529		46,529		56,510
UNITED STATES
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	17,476	21,205	52,207	77,333
Property and equipment, net	4,899		4,899		7,421
Total Intangible Assets, Net					56,474
Foreign Countries [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	33,329	32,904	92,361	110,392
Property and equipment, net	5,698		5,698		7,433
Other North America
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	254	770	1,957	1,856
Property and equipment, net	733		733		942
Total Intangible Assets, Net	0		0		36
Asia Pacific [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	21,303	19,257	54,398	65,211
Property and equipment, net	2,721		2,721		3,581
CHINA [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	7,172	8,890	22,152	23,681
Property and equipment, net	2,685		2,685		3,396
JAPAN
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	3,339	6,751	13,221	25,207
INDIA
Revenues from External Customers and Long-Lived Assets [Line Items]
Property and equipment, net	2,241		2,241		2,893
Other Asia Pacific [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	10,792	3,616	19,025	16,323
Property and equipment, net	36		36		185
Netherlands [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	7,861	5,416	19,030	14,377
Other EMEA [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	3,911	7,461	16,976	28,948
Property and equipment, net	3		3		17
Europe, the Middle East and Africa [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	11,772	12,877	36,006	43,325
Property and equipment, net	$ 2,244		$ 2,244		$ 2,910