Annual report pursuant to Section 13 and 15(d)

Shareholders' Equity (Details 4)

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Shareholders' Equity (Details 4) (USD $)
In Thousands, except Per Share data, unless otherwise specified
12 Months Ended 1 Months Ended 3 Months Ended 1 Months Ended 3 Months Ended
Dec. 28, 2013
Dec. 27, 2013
Oct. 21, 2009
May 31, 2010
GE Common Stock Warrant
Dec. 31, 2009
GE Common Stock Warrant
Apr. 30, 2010
GE Common Stock Warrant
Oct. 21, 2009
GE Common Stock Warrant
May 31, 2010
Non Employee Member Stock Warrant
Dec. 31, 2009
Non Employee Member Stock Warrant
May 13, 2010
Non Employee Member Stock Warrant
Warrants [Line Items]                    
Exercise Price of warrant           0.73 0.75     3.55
Number of shares of common stock which can be purchased           254 248     24
Warrants Fair Value             $ 479      
Fair value per share             $ 1.93     $ 3.03
Warrant exercisable period       10 years 10 years     2 years 0 years  
Share Price   $ 2.90 $ 1.97              
Number of shares in the money 191