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Note 12. Share-Based Compensation (Tables)
3 Months Ended
Mar. 30, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]
   

Number of Common Shares

         
   

Options

Outstanding

   

Exercisable

   

Available

for Grant

   

Weighted-Average

Exercise

Price

 
                                 

2014

                               

Balance at December 29, 2013

    1,596,322       1,171,520       526,878     $ 2.98  

Forfeited/cancelled/expired

    (36,423 )             34,423       2.42  

Exercised

    (7,000 )                   1.89  

Granted

    10,000               (10,000 )     4.58  

Balance at March 30, 2014

    1,562,899       1,258,936       551,301       3.01  
                                 

2013

                               

Balance at December 30, 2012

    1,528,039       1,298,809       875,627     $ 3.04  

Forfeited/cancelled/expired

    (53,058 )             53,058       3.40  
Granted     443,500               (443,500 )     3.07  

Balance at March 31, 2013

    1,918,481       1,245,751       485,185       2.94