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Note 11 - Net Income (Loss) per Share Attributable to Sterling Common Stockholders
 9 Months Ended
Sep. 30, 2012
Earnings Per Share [Text Block]
11.  Net Income (Loss) per Share Attributable to Sterling Common Stockholders

Basic net income (loss) per share attributable to Sterling common stockholders is computed by dividing net income (loss) attributable to Sterling common stockholders by the weighted average number of common shares outstanding during the period.  Diluted net income (loss) per common share attributable to Sterling common stockholders is the same as basic net income (loss) per share attributable to Sterling common stockholders but includes dilutive stock options and warrants using the treasury stock method.  The following table reconciles the numerators and denominators of the basic and diluted per common share computations for net income attributable to Sterling common stockholders (in thousands, except per share data):

   
Three Months Ended
September 30,
   
Nine MonthsEnded
September 30,
 
   
2012
   
2011
   
2012
   
2011
 
Numerator:
                       
Net income (loss) attributable to Sterling common stockholders
  $ 990     $
3,461
    $ (3,223 )   $
7,716
 
Revaluation of the RLW noncontrolling interest put/call liability reflected in retained earnings, net of tax
    (762 )     --       (1,239 )     --  
    $ 228     $
3,461
    $ (4,462 )   $
7,716
 
Denominator:
                               
Weighted average common shares outstanding — basic
    16,405      
16,386
      16,362      
16,444
 
Shares for dilutive stock options and warrants 
    99      
55
      --      
114
 
Weighted average common shares outstanding and assumed conversions— diluted 
    16,504      
16,441
      16,362      
16,558
 
Basic net income (loss) per share attributable to Sterling common stockholders
  $ 0.01     $
0.21
    $ (0.27 )   $
0.47
 
Diluted net income (loss) per share attributable to Sterling common stockholders
  $ 0.01     $
0.21
    $ (0.27 )   $
0.47
 

There were 2,070 and 695 weighted average options outstanding during the three and nine months ended September 30, 2012, and 119,407 outstanding for both the three and nine months ended September 30, 2011, which were considered antidilutive as the option exercise price exceeded the average share market price and were, therefore, excluded from the denominator used for computing diluted net income (loss) per share attributable to Sterling common stockholders.  In addition, and in accordance with the treasury stock method, 119,673 shares of underlying stock options and restricted stock were excluded from the diluted weighted average common shares outstanding for the nine months ended September 30, 2012 as the Company incurred a loss during this period and the impact of such shares would have been antidilutive.