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(5) Share-Based Compensation Plans (Tables)
12 Months Ended
Dec. 28, 2019
Retirement Benefits [Abstract]  
Schedule of Share-Based Compensation
      Weighted  Weighted   
      Average  Remaining  Aggregate
      Exercise  Contractual  Intrinsic
   Shares  Price  Life (years)  Value
Outstanding at                    
beginning of year   1,753,605   $1.75           
Granted   199,500   $1.44           
Exercised   —      —             
Forfeited   (127,000)  $1.61           
Expired   (32,000)  $1.58           
                    
Outstanding at end of year   1,794,105   $1.72    3.8   $11,120 
              
                    
Options exercisable at year-end   1,471,905   $1.74    3.1   $10,550 
    ========    =====        ======== 
                     
Annualized Weighted Average values of the significant assumptions used
     2019      2018  
Risk-free interest rate   2.48%   2.76%
Expected life in years   6.1    6.1 
Expected volatility   54%   54%
Expected dividend yield   0    0 
Weighted average fair value of grants  $.79   $.84