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Note 3 - Earnings (Loss) Per Share
9 Months Ended
Sep. 30, 2018
Notes to Financial Statements  
Earnings Per Share [Text Block]
3.
Earnings (Loss) Per Share
 
Earnings (loss) per common share is computed based on the weighted-average number of common shares outstanding and, when appropriate, dilutive potential common stock outstanding during the period. Stock options are considered to be potential common stock. The computation of diluted earnings (loss) per share does
not
assume exercise or conversion of securities that would have an anti-dilutive effect.
 
Basic earnings (loss) per common share is the amount of net earnings (loss) for the period available to each weighted-average share of common stock outstanding during the reporting period. Diluted earnings (loss) per common share is the amount of earnings (loss) for the period available to each weighted-average share of common stock outstanding during the reporting period and to each share of potential common stock outstanding during the period, unless inclusion of potential common stock would have an anti-dilutive effect.
 
The following table sets forth the computation of basic and diluted earnings (loss) per common share:
 
   
Three months ended
September 30
,
   
Nine months
ended
September 30
,
 
   
2018
   
2017
   
2018
   
2017
 
Numerator:
                               
Net loss
  $
(10,142
)
  $
(9,276
)
  $
(14,151
)
  $
(10,564
)
Denominator:
                               
Basic weighted average shares outstanding
   
8,306,707
     
8,520,041
     
8,304,974
     
8,641,173
 
Dilutive common stock equivalents using treasury stock method
   
     
     
     
 
Diluted weighted average shares outstanding
   
8,306,707
     
8,520,041
     
8,304,974
     
8,641,173
 
                                 
Basic loss per common share
  $
(1.22
)
  $
(1.09
)
  $
(1.70
)
  $
(1.22
)
Diluted loss per common share
  $
(1.22
)
  $
(1.09
)
  $
(1.70
)
  $
(1.22
)
                                 
Weighted average options outstanding
   
711,888
     
782,012
     
727,980
     
832,953
 
Anti-dilutive options not included in the computations
   
711,888
     
782,012
     
727,980
     
832,953