Segment Information Geographical Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 50,138	$ 54,109	$ 65,438	$ 68,178	$ 69,300	$ 63,725	$ 77,584	$ 75,487	$ 237,863	$ 286,096	$ 330,865	[1]
Property and equipment, net	14,854				17,713				14,854	17,713
Intangible Assets, Net (Excluding Goodwill)	56,510				70,284				56,510	70,284
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									100,780	105,858	105,671
Property and equipment, net	7,421				8,572				7,421	8,572
Intangible Assets, Net (Excluding Goodwill)	56,474				68,903				56,474	68,903
Other North America
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									3,042	3,310	1,371
Property and equipment, net	942				953				942	953
Intangible Assets, Net (Excluding Goodwill)	36				211				36	211
China [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									29,818	45,419	69,503
Property and equipment, net	3,396				4,685				3,396	4,685
Japan [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									30,724	39,435	29,337
Other APAC [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									20,988	31,695	45,125
Property and equipment, net	185				358				185	358
Foreign Countries [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									137,083	180,238	225,194
Property and equipment, net	7,433				9,141				7,433	9,141
Intangible Assets, Net (Excluding Goodwill)	36				1,381				36	1,381
Asia Pacific [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									81,530	116,549	143,965
Property and equipment, net	3,581				5,043				3,581	5,043
India [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Property and equipment, net	2,893				3,110				2,893	3,110
Germany [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									11,770	18,580	39,266
Other EMEA [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									40,741	41,799	40,592
Property and equipment, net	17				35				17	35
Europe, the Middle East and Africa [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									52,511	60,379	79,858
Property and equipment, net	2,910				3,145				2,910	3,145
Intangible Assets, Net (Excluding Goodwill)	$ 0				$ 1,170				$ 0	$ 1,170

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