Earnings Per Share (Tables)
 9 Months Ended
Sep. 30, 2016
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted
The following table sets forth the reconciliation from basic to diluted average common shares and the calculations of net income per common share.  Net income for basic and diluted calculations do not differ.
 
 
Three Months Ended 
 September 30,
 
Nine Months Ended 
 September 30,
(In thousands, except per share)
2016
 
2015
 
2016
 
2015
Net Income
$
13,236

 
$
14,756

 
$
32,457

 
$
31,825

Average Common Shares:
 
 
 
 
 
 
 
Basic (weighted-average outstanding shares)
11,460

 
11,380

 
11,424

 
11,337

Dilutive potential common shares from stock options
135

 
116

 
127

 
140

Diluted (weighted-average outstanding shares)
11,595

 
11,496

 
11,551

 
11,477

 
 
 
 
 
 
 
 
Basic earnings per share
$
1.15

 
$
1.30

 
$
2.84

 
$
2.81

Diluted earnings per share
$
1.14

 
$
1.28

 
$
2.81

 
$
2.77