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Note 12 - Earnings Per 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,
   
September 30,
 
   
2019
   
2018
   
2019
   
2018
 
(Amounts in thousands, except share and per share data)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Net income
  $
9,156
    $
9,100
    $
29,238
    $
27,034
 
                                 
Weighted average common shares outstanding, basic
   
15,603,992
     
16,512,823
     
15,717,678
     
16,717,704
 
Dilutive effect of potential common shares
                               
Stock options
   
52,360
     
65,910
     
55,898
     
63,898
 
Restricted stock
   
8,235
     
33,683
     
11,908
     
28,823
 
Total dilutive effect of potential common shares
   
60,595
     
99,593
     
67,806
     
92,721
 
Weighted average common shares outstanding, diluted
   
15,664,587
     
16,612,416
     
15,785,484
     
16,810,425
 
                                 
Basic earnings per common share
  $
0.59
    $
0.55
    $
1.86
    $
1.62
 
Diluted earnings per common share
   
0.58
     
0.55
     
1.85
     
1.61
 
                                 
Antidilutive potential common shares
                               
Restricted stock
   
-
     
4,263
     
-
     
2,011
 
Total potential antidilutive shares
   
-
     
4,263
     
-
     
2,011