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(5) Share-Based Compensation Plans (Tables)
12 Months Ended
Dec. 29, 2018
Retirement Benefits [Abstract]  
Summary of stock option activity as of December 29, 2018
            Weighted      Weighted         
            Average      Remaining      Aggregate  
            Exercise      Contractual      Intrinsic  
     Shares      Price      Life (years)      Value  
Outstanding at                    
beginning of year   1,666,905   $1.77           
Granted   163,000   $1.54           
Exercised   —      —             
Forfeited   (68,300)  $1.74           
Expired   (8,000)  $1.70           
Outstanding at                    
end of year   1,753,605   $1.75    4.8   $10,550 
                 
Options exercisable                    
at year-end   1,356,505   $1.74    3.9   $10,550 
               
                     
Table of assumptions used to estimate the fair valuesof options granted 2018 and 2017
     2018      2017  
Risk-free interest rate   2.73-2.89%    2.08-2.23% 
Expected life in years   6.1    6.1 
Expected volatility   54%   54%
Expected dividend yield   0    0 
Weighted average fair value of grants  $.84   $.84