Segment Information Geographical Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 48,174	$ 50,805	$ 49,964	$ 43,799	$ 50,138	$ 54,109	$ 65,438	$ 68,178	$ 192,742	$ 237,863	$ 286,096	[1]
Property and equipment, net	9,786				14,854				9,786	14,854
Intangible Assets, Net (Excluding Goodwill)	43,224				56,510				43,224	56,510
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									74,630	100,780	105,858
Property and equipment, net	4,558				7,421				4,558	7,421
Intangible Assets, Net (Excluding Goodwill)	43,224				56,474				43,224	56,474
Other North America
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									2,079	3,042	3,310
Property and equipment, net	672				942				672	942
Intangible Assets, Net (Excluding Goodwill)	0				36				0	36
China [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									31,975	29,818	45,419
Property and equipment, net	2,427				3,396				2,427	3,396
Japan [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									14,848	30,724	39,435
Other APAC [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									26,329	20,988	31,695
Property and equipment, net	11				185				11	185
Foreign Countries [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									118,112	137,083	180,238
Property and equipment, net	5,228				7,433				5,228	7,433
Asia Pacific [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									73,152	81,530	116,549
Property and equipment, net	2,438				3,581				2,438	3,581
India [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Property and equipment, net	2,115				2,893				2,115	2,893
Germany [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									2,808	11,770	18,580
Netherlands [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									22,608	19,017	19,896
Other EMEA [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									17,465	21,724	21,903
Property and equipment, net	3				17				3	17
Europe, the Middle East and Africa [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									42,881	52,511	60,379
Property and equipment, net	$ 2,118				$ 2,910				$ 2,118	$ 2,910

[1] {F|ahBzfndlYmZpbGluZ3MtaHJkcmoLEgZYTUxEb2MiXlhCUkxEb2NHZW5JbmZvOmUxNDNhNTIzNTkwMTQyYjA4YWUxZjgzODc5NWFkZjE2fFRleHRTZWxlY3Rpb246NzYwNUQ2QzBENzk5MDZDNEQyQ0FGQUQ1M0RGN0IyNDkM}