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Note 4 - Net Earnings Per Share (Tables)
6 Months Ended
Jun. 30, 2017
Notes Tables  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
   
Three Months Ended
June 30,
   
Six Months Ended
June 30,
 
   
2017
   
2016
   
2017
   
2016
 
In thousands (except per share amounts):
                               
Net income (loss) (a)
  $
59
    $
(336
)
  $
117
    $
(750
)
Weighted average outstanding shares of common stock (b)
   
2,042
     
2,042
     
2,042
     
2,042
 
Dilutive potential common shares from employee stock options
   
     
     
     
 
Common stock and common stock equivalents (c)
   
2,042
     
2,042
     
2,042
     
2,042
 
Loss per share:
                               
Basic net income (loss) per share (a)/(b)
  $
0.03
    $
(0.16
)
  $
0.06
    $
(0.37
)
Diluted net income (loss) per share (a)/(c)
  $
0.03
    $
(0.16
)
  $
0.06
    $
(0.37
)