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Loss Per Share
 3 Months Ended
Mar. 31, 2013
Earnings Per Share (Thousands of Dollars and Shares Except Per Share Data) [Abstract]  
Earnings Per Share
(2) Loss Per Share

Net loss per share data for the quarters ended March 31, 2013 and April 1, 2012 were computed as follows:

 
    
 
 
2013
  
2012
 
 
 
Basic
  
Diluted
  
Basic
  
Diluted
 
Net loss
 
$
(6,671
)
  
(6,671
)
  
(2,579
)
  
(2,579
)
 
                
Average shares outstanding
  
129,340
   
129,340
   
129,569
   
129,569
 
 
                
Net loss per common share
 
$
(0.05
)
  
(0.05
)
  
(0.02
)
  
(0.02
)

Restricted stock-based awards and options to acquire shares totaling 8,731 and 12,011 at March 31, 2013 and April 1, 2012, respectively, were excluded from the calculation of diluted earnings per share because to include them would have been antidilutive. Of these amounts, 7,559 and 8,469 would have been included in the calculation of diluted shares had the Company not had a net loss in the first quarters of 2013 and 2012, respectively. Assuming that these awards and options were included, under the treasury stock method, they would have resulted in an additional 1,524 and 1,991 shares being included in the diluted earnings per share calculation for the quarters ended March 31, 2013 and April 1, 2012, respectively, resulting in equivalent shares of 130,864 and 131,560, respectively.