Segment Information Product and Service and Product Group (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
Revenue from External Customer [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]
ATCA Platforms [Member]
Revenue from External Customer [Line Items]
Revenues									91,094	116,537	136,572
Software and Solutions [Member]
Revenue from External Customer [Line Items]
Revenues									40,281	44,934	52,666
Com Express and Rackmount Server [Member]
Revenue from External Customer [Line Items]
Revenues									49,660	56,019	49,538
Other Products [Member]
Revenue from External Customer [Line Items]
Revenues									$ 11,707	$ 20,373	$ 47,320

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