Segment Information - Product and Service and Product Group (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2014	Mar. 31, 2013
Revenue from External Customer [Line Items]
Revenues	$ 43,799	$ 68,178
ATCA Platforms [Member]
Revenue from External Customer [Line Items]
Revenues	23,192	34,818
Software and Solutions [Member]
Revenue from External Customer [Line Items]
Revenues	7,841	11,649
Com Express and Rackmount Server [Member]
Revenue from External Customer [Line Items]
Revenues	10,461	14,627
Other Products [Member]
Revenue from External Customer [Line Items]
Revenues	$ 2,305	$ 7,084

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

Name:	us-gaap_Revenues
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration