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Loss per common share
 12 Months Ended
Dec. 31, 2011
Loss per common share [Abstract]  
Loss per common share
8.  Loss per common share

Basic and diluted loss per common share was computed as follows:

   
(in thousands, except per share amounts)
 
   
2011
   
2010
   
2009
 
Numerator:
              
   Net loss
 
$
(36,670
)
 
 $
(11,930
)
 
$
(16,415
) 
                         
Denominator:
                       
   Basic – weighted-average shares
   
17,589
     
17,275
     
17,080
 
   Effect of dilutive stock options
   
-
     
-
     
-
 
   Diluted – weighted-average shares
   
17,589
     
17,275
     
17,080
 
                         
Basic loss per common share
 
$
(2.08
)
 
$
(0.69
)
 
$
(0.96
) 
Diluted loss per common share
 
$
(2.08
)
 
$
(0.69
)
 
$
(0.96
)

                Options totaling 431,000, 549,000 and 581,000 shares were outstanding but were not included in the calculation of diluted earnings per share for 2011, 2010 and 2009, respectively, as their exercise prices were greater than the average market price of the common shares.  The Company excluded all common stock equivalents in 2011, 2010, and 2009 as their effect was anti-dilutive due to the net loss.