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Note 13 - Net Loss Per Share Attributable to Sterling Common Stockholders
 12 Months Ended
Dec. 31, 2016
Notes to Financial Statements  
Earnings Per Share [Text Block]
13.
 Net Loss Per Share Attributable to Sterling Common Stockholders
 
Basic net loss per share attributable to Sterling common stockholders is computed by dividing net loss attributable to Sterling common stockholders by the weighted average number of common shares outstanding during the period. Diluted net loss per common share attributable to Sterling common stockholders is the same as basic net loss per share attributable to Sterling common stockholders but assumes the exercise of dilutive unvested common stock using the treasury stock method. The following table reconciles the numerators and denominators of the basic and diluted per common share computations for net loss attributable to Sterling common stockholders for
2016,
2015
and
2014
(amounts in thousands, except per share data):
 
    Years Ended December 31,
    2016   2015   2014
Numerator:            
Net loss attributable to Sterling common stockholders before noncontrolling interest revaluation   $
(9,238
 )   $
(20,402
 )   $
(9,781
 )
Revaluation of a noncontrolling interest due to a new agreement    
--
      
(18,774
 )    
--
  
    $
(9,238
 )   $
(39,176
 )   $
(9,781
 )
Denominator:                        
Weighted average common shares outstanding — basic    
23,140
      
19,375
      
18,063
  
Shares for dilutive unvested stock    
--
      
--
      
--
  
Weighted average common shares outstanding and assumed conversions— diluted    
23,140
      
19,375
      
18,063
  
Basic and diluted net loss per share attributable to Sterling common stockholders   $
(0.40
 )   $
(2.02
 )   $
(0.54
 )
 
In accordance with the treasury stock method, approximately
0.4
million,
0.4
million and
0.2
million shares of unvested stock were excluded from the diluted weighted average common shares outstanding in
2016,
2015
and
2014,
respectively, as the Company incurred a loss in these years and the impact of such shares would have been antidilutive.