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Liabilities (Tables)
 12 Months Ended
Dec. 28, 2012
Liabilities, Fair Value Disclosure [Abstract]  
Schedule Of Share Based Payment Award Stock Warrants Valuation Assumptions [Table Text Block]

The fair value of the warrants was estimated on December 14, 2007 and on June 1, 2009 issuance dates using a Black-Scholes option valuation model applying the assumptions noted in the following table:

 

    As of
December 12, 2007		     As of
June 1, 2009		  
Common stock price per share   $ 2.63     $ 1.01  
Number of warrants     700,000       700,000  
Expected dividends     0 %     0 %
Expected volatility     67.3 %     74.4 %
Risk-free rate     3.88 %     3.28 %
Life (in years)     6.0       6.0

 

The fair value of the warrant that was classified as a liability on December 28, 2012 and December 30, 2011 were based on Black-Scholes option valuation model applying the assumption noted on the following table below:

 

    December 28,
2012		     December 30,
2011		  
Common stock price per share   $ 5.82     $ 10.49  
Number of warrants     70,000       70,000  
Expected dividends     0 %     0 %
Expected volatility     42.15 %     63.61 %
Risk-free rate     .01 %     .25 %
Life (in years)     .23       1.25
Schedule of Change in Asset Retirement Obligation [Table Text Block]

The following table describes all changes to the Company’s asset retirement obligation liability (in thousands):

 

  December 28,  December 30, 
  2012  2011 
Asset retirement obligation at beginning of the year $523   — 
Liabilities incurred  169  $577 
Accretion expense  15   — 
Asset retirement obligation at end of the year $707  $577