Stock Option Plan (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 28, 2012	Sep. 30, 2011	Sep. 28, 2012	Sep. 30, 2011
Shares authorized for future grant	1,600,712		1,600,712
Options exercisable, weighted average remaining contractual term			4 years 1 month 6 days
Options outstanding, weighted average remaining contractual term			4 years 9 months 18 days
Total unrecognized share-based compensation cost	$ 28		$ 28
Unrecognized share-based compensation cost, weighted average period to be recognized			2 years 2 months 12 days
Share-based compensation expense	$ 8	$ 14	$ 25	$ 35