Annual report pursuant to Section 13 and 15(d)

Significant Accounting Policies (Details 6)

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Significant Accounting Policies (Details 6) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 28, 2013
Dec. 29, 2012
Share-based Compensation [Abstract]    
Estimated forfeiture rate, minimum (as a percent) 0.00%  
Estimated forfeiture rate, maximum (as a percent) 5.00%  
Expected dividend yield (as a percent) 0.00%  
Share-based compensation expense recognized $ 233 $ 153
Estimated share-based compensation expenses in 2013 $ 275