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Note 2 - Basis of Presentation (Tables)
3 Months Ended
Mar. 31, 2019
Notes Tables  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
   
Three Months Ended
 
   
March 31,
 
   
2019
   
2018
 
Basic shares
   
6,418,242
     
6,188,861
 
Dilutive shares
   
444,101
     
379,701
 
Diluted shares
   
6,862,343
     
6,568,562
 
   
Three Months Ended
 
   
March 31,
 
   
2019
   
2018
 
   
(Dollars in Thousands, Except Per Share Data)
 
Net income
  $
1,234
    $
414
 
Basic net income per share
  $
0.19
    $
0.07
 
Diluted net income per share
  $
0.18
    $
0.06