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Stock Option And Stock Award Plans Outstanding Stock Awards Activity (Tables)
 12 Months Ended
Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Date
A summary of stock options outstanding at December 31, 2019, 2018 and 2017, and changes during those years, is presented below:
 
 
 
Option Exercise Price/Share
  
Number of
Options
 
Range
 
Weighted
Average
Outstanding at January 1, 2017
500,919

 
$
17.13

 
to
 
$
30.01

 
$
21.67

Granted
209,551

 
15.65

 
to
 
15.65

 
15.65

Forfeited and expired
(60,685
)
 
17.13

 
to
 
30.01

 
21.42

Exercised
(41,265
)
 
19.84

 
to
 
19.84

 
19.84

Outstanding at December 31, 2017
608,520

 
15.65

 
to
 
24.84

 
19.75

Granted
451,083

 
19.35

 
to
 
19.35

 
19.35

Forfeited and expired
(96,089
)
 
15.65

 
to
 
24.84

 
19.58

Exercised
(73,398
)
 
15.65

 
to
 
22.49

 
18.15

Outstanding at December 31, 2018
890,116

 
15.65

 
to
 
24.84

 
19.69

Granted
758,287

 
18.48

 
to
 
18.48

 
18.48

Forfeited and expired
(10,000
)
 
19.40

 
to
 
19.40

 
19.40

Exercised
(9,500
)
 
19.40

 
to
 
19.40

 
19.40

Outstanding at December 31, 2019
1,628,903

 
$
15.65

 
to
 
$
24.84

 
$
19.13