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Note 11 - Earnings Per Common Share (Tables)
6 Months Ended
Jun. 30, 2019
Notes Tables  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
   
Three Months Ended
   
Six Months Ended
 
   
June 30, 2019
   
June 30, 2018
   
June 30, 2019
   
June 30, 2018
 
(Numerator):
                               
Net income
  $
2,086
    $
2,451
    $
4,347
    $
5,138
 
(Denominator):
                               
Weighted average shares outstanding – basic
   
4,963,737
     
4,952,712
     
4,962,010
     
4,950,922
 
Potentially dilutive common shares – restricted stock units
   
2,085
     
1,553
     
2,978
     
2,406
 
Weighted average shares outstanding – diluted
   
4,965,822
     
4,954,265
     
4,964,988
     
4,953,328
 
Income per common share
                               
Basic
  $
0.42
    $
0.49
    $
0.88
    $
1.04
 
Diluted
  $
0.42
    $
0.49
    $
0.88
    $
1.04