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
 3 Months Ended 1 Months Ended
Dec. 28, 2012
Oct. 21, 2009
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
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     2 years  
Share Price $ 1.29 $ 1.97