Contingencies (Details Textual) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 29, 2013	Jun. 30, 2012	Jun. 29, 2013	Jun. 30, 2012
Contingencies (Textual) [Abstract]
General period of warranty on sales of hardware products			90 days
Significant costs incurred related to warranty obligations	$ 0	$ 0	$ 0	$ 0
Significant losses from indemnification claims	$ 0	$ 0	$ 0	$ 0