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Earnings Per Share
 6 Months Ended
Jun. 30, 2021
Earnings Per Share [Abstract]  
Earnings Per Share Earnings Per ShareThe 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
June 30,		Six Months Ended
June 30,
(In thousands, except per share)
2021202020212020
Net Income
$26,037 $12,989 $43,499 $28,517 
Average Common Shares:
Basic (weighted-average outstanding shares)
11,842 11,778 11,831 11,769 
Dilutive potential common shares from stock options
60 64 61 66 
Diluted (weighted-average outstanding shares)
11,902 11,842 11,892 11,835 
Basic earnings per share
$2.20 $1.10 $3.68 $2.42 
Diluted earnings per share
$2.19 $1.10 $3.66 $2.41