Annual report pursuant to Section 13 and 15(d)

Note 6 - Stock based compensation (Detail) - The following weighted average assumptions were used in calculating the estimated fair value of options used to compute stock-based compensation expenses:

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Note 6 - Stock based compensation (Detail) - The following weighted average assumptions were used in calculating the estimated fair value of options used to compute stock-based compensation expenses: (USD $)
12 Months Ended
Dec. 30, 2012
Jan. 01, 2012
Black-Scholes weighted-average assumptions    
Expected dividend yield 0.00% 0.00%
Expected volatility 83.00% 92.60%
Risk-free interest rate 0.50% 0.67%
Expected option life in years 4 years 4 years 73 days
Weighted-average stock option fair value per option granted (in Dollars per share) $ 1.86 $ 1.08