Quarterly report pursuant to Section 13 or 15(d)

Note 6 - Employee and Director Benefits (Tables)

v3.7.0.1
Note 6 - Employee and Director Benefits (Tables)
 6 Months Ended
Jun. 30, 2017
Notes Tables  
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
    2017   2016
Expected volatility    
29.00
 %    
29.00
 %
Expected dividends    
0.44
 %    
0.63
 %
Expected term (in years)    
6.25
      
6.25
  
Risk-free rate    
2.09
 %    
1.87
 %
Share-based Compensation, Stock Options, Activity [Table Text Block]
    Shares   Weighted
Average
Exercise
Price
   Weighted
Average
Remaining
Contractual
Term (years)
   Aggregate
Intrinsic
Value
                (In Thousands)
Six Months Ended June 30, 2017:                                
Outstanding at January 1, 2017    
2,026,334
     $
9.00
      
6.2
     $
57,636
  
Granted    
51,500
      
37.95
      
9.6
      
(80
 )
Exercised    
(292,000
 )    
4.98
      
4.4
      
9,169
  
Forfeited    
(32,000
 )    
21.96
      
8.6
      
(462
 )
Outstanding at June 30, 2017    
1,753,834
      
10.28
      
5.9
     $
45,777
  
                                 
Exercisable at June 30, 2017    
811,736
     $
5.20
      
4.4
     $
25,303
  
                                 
Six Months Ended June 30, 2016:                                
Outstanding at January 1, 2016    
2,498,834
     $
6.66
      
6.3
     $
42,743
  
Granted    
227,000
      
19.76
      
9.7
      
1,120
  
Exercised    
(549,500
 )    
4.26
      
4.4
      
11,230
  
Forfeited    
(13,000
 )    
19.41
      
9.2
      
69
  
Outstanding at June 30, 2016    
2,163,334
      
8.57
      
6.6
     $
38,891
  
                                 
Exercisable at June 30, 2016    
687,536
     $
6.09
      
6.0
     $
14,989