Segment Information - Product and Service and Product Group (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
Revenue from External Customer [Line Items]
Revenues	$ 50,805	$ 54,109	$ 144,568	$ 187,725
ATCA Platforms [Member]
Revenue from External Customer [Line Items]
Revenues	20,736	27,744	66,894	94,284
Software and Solutions [Member]
Revenue from External Customer [Line Items]
Revenues	11,620	9,563	29,861	33,824
Com Express and Rackmount Server [Member]
Revenue from External Customer [Line Items]
Revenues	15,923	13,380	39,840	42,225
Other Products [Member]
Revenue from External Customer [Line Items]
Revenues	2,526	3,422	7,973	17,392
Europe, the Middle East and Africa [Member]
Revenue from External Customer [Line Items]
Revenues	$ 11,772	$ 12,877	$ 36,006	$ 43,325