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Stockholders' Equity (Details 1) (Employee Stock Option [Member])
12 Months Ended
Jan. 03, 2014
Dec. 28, 2012
Dec. 30, 2011
Employee Stock Option [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Expected dividend yield 0.00% 0.00% 0.00%
Expected volatility 71.00% 79.00% 77.00%
Risk-free interest rate 0.73% 0.82% 1.82%
Expected term (in years) 4 years 1 month 13 days 5 years 2 months 16 days 5 years 5 months 26 days