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Note 11 - Earnings Per Common Share (Tables)
9 Months Ended
Sep. 30, 2019
Notes Tables  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
   
Three Months Ended
   
Nine Months Ended
 
   
September 30, 2019
   
September 30, 2018
   
September 30, 2019
   
September 30, 2018
 
(Numerator):
                               
Net income
  $
2,493
    $
2,676
    $
6,840
    $
7,814
 
(Denominator):
                               
Weighted average shares outstanding – basic
   
4,966,641
     
4,955,162
     
4,963,571
     
4,952,351
 
Potentially dilutive common shares – restricted stock units
   
2,485
     
3,000
     
2,813
     
2,604
 
Weighted average shares outstanding – diluted
   
4,969,126
     
4,958,162
     
4,966,384
     
4,954,955
 
Income per common share
                               
Basic
  $
0.50
    $
0.54
    $
1.38
    $
1.58
 
Diluted
  $
0.50
    $
0.54
    $
1.38
    $
1.58