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Note 10 - Loss Per Share (Tables)
 12 Months Ended
Dec. 29, 2019
Notes Tables  
Schedule of Weighted Average Number of Shares [Table Text Block]
Number of common shares
  
Year ended
December 29,
2019
    
Year ended
December 30,
2018
    
Year ended
December 31,
2017
  
Basic weighted average shares outstanding
    
25,745,499
      
19,176,198
      
16,788,231
  
Dilutive stock awards (a) (b)
    
—
      
—
      
—
  
                         
Diluted weighted average shares outstanding
    
25,745,499
      
19,176,198
      
16,788,231