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Earnings Per Share
 9 Months Ended
Sep. 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
September 30,		Nine Months Ended
September 30,
(In thousands, except per share)
2021202020212020
Net Income
$17,519 $20,033 $61,018 $48,550 
Average Common Shares:
Basic (weighted-average outstanding shares)
11,842 11,788 11,835 11,776 
Dilutive potential common shares from stock options
58 63 60 64 
Diluted (weighted-average outstanding shares)
11,900 11,851 11,895 11,840 
Basic earnings per share
$1.48 $1.70 $5.16 $4.12 
Diluted earnings per share
$1.47 $1.69 $5.13 $4.10