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Note 9 - Basic and Diluted 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 September 30,
   
Nine months ended September 30,
 
   
2019
   
2018
   
2019
   
2018
 
Numerator for basic and diluted earnings per common share:
                               
Net income for the period
   
4,205
     
5,347
     
9,620
     
12,699
 
                                 
Denominator for basic and diluted earnings per common share:
                               
Basic weighted average number of common shares outstanding
   
10,626,754
     
10,611,579
     
10,639,544
     
10,599,243
 
Effect of outstanding stock options
   
119,080
     
182,718
     
158,555
     
196,425
 
Diluted weighted average number of shares outstanding
   
10,745,834
     
10,794,297
     
10,798,099
     
10,795,668
 
                                 
Basic earnings per common share
   
0.40
     
0.50
     
0.90
     
1.20
 
                                 
Diluted earnings per common share
   
0.39
     
0.50
     
0.89
     
1.18