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Income (Loss) Per Common Share
9 Months Ended
Sep. 30, 2011
Income (Loss) Per Common Share
3 .
Income (Loss) Per Common Share

The following table sets forth the computation of basic and diluted income (loss) per common share from continuing operations.

    
Three Months Ended September 30,
    
Nine Months Ended September 30,
  
   
2011
    
2010
    
2011
    
2010
  
Numerator
                        
Numerator for basic loss per common share - loss from continuing operations
   $ (17,618 )   $ (8,836)     $ (20,846 )   $ (20,362 )
Net income attributable to the noncontrolling interests
     (1,956 )     (1,446 )     (6,088 )     (4,503 )
Loss attributable to MDC Partners Inc. common shareholders from continuing operations
   $ (19,574 )   $ (10,282 )   $ (26,934 )   $ (24,865 )
Effect of dilutive securities
     —       —       —       —  
Numerator for diluted loss per common share – loss attributable to MDC Partners Inc. common shareholders from continuing operations
   $ (19,574 )   $ (10,282 )   $ (26,934 )   $ (24,865 )
Denominator
                                
Denominator for basic loss per common share - weighted average common shares
     29,158,703       28,500,287       29,051,450       27,980,895  
Effect of dilutive securities:
     —       —               —  
Denominator for diluted loss per common share - adjusted weighted shares
     29,158,703       28,500,287       29,051,450       27,980,895  
Basic loss per common share from continuing operations attributable to MDC Partners Inc.
   $ (0.67 )   $ (0.36 )   $ (0.93 )   $ (0.89 )
Diluted loss per common share from continuing operations attributable to MDC Partners Inc.
   $ (0.67 )   $ (0.36 )   $ (0.93 )   $ (0.89 )

During the three and nine months ended September 30, 2011, options and other rights to purchase 5,423,869 shares of common stock, which includes 2,161,056 shares of non-vested restricted stock and restricted stock units, were outstanding and were not included in the computation of diluted income per common share because their effect would be antidilutive.

During the three and nine months ended September 30, 2010, options and other rights to purchase 4,939,113 shares of common stock, which includes 1,342,601 shares of non-vested restricted stock, were outstanding but were not included in the computation of diluted income per common share because their effect would be antidilutive.