Segment Information Product and Service and Product Group (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
Revenue from External Customer [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]
ATCA Platforms [Member]
Revenue from External Customer [Line Items]
Revenues									116,537	136,572	132,530
Software and Solutions [Member]
Revenue from External Customer [Line Items]
Revenues									44,934	52,666	36,938
Com Express and Rackmount Server [Member]
Revenue from External Customer [Line Items]
Revenues									56,019	49,538	56,848
Other Products [Member]
Revenue from External Customer [Line Items]
Revenues									$ 20,373	$ 47,320	$ 104,549

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