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EARNINGS PER SHARE
12 Months Ended
Dec. 31, 2020
Earnings Per Share [Abstract]  
EARNINGS PER SHARE
15. EARNINGS PER SHARE
The Corporation is required to report both basic earnings per share (EPS), based on the weighted-average number of common shares outstanding, and diluted earnings per share, based on the basic EPS adjusted for all potentially dilutive shares issuable.
As of December 31, 2020, 2019, and 2018, there were no options outstanding that were considered anti-dilutive.
Earnings per share calculations for the years ended December 31, 2020, 2019, and 2018, were as follows:
(In thousands, except per share data)Net EarningsWeighted-
Average Shares
Outstanding
Earnings per Share
2020
Basic earnings per share $201,392 41,738 $4.83 
Dilutive effect of stock options and deferred stock compensation261 
Diluted earnings per share$201,392 41,999 $4.80 
2019
Basic earnings per share$307,583 42,739 $7.20 
Dilutive effect of stock options and deferred stock compensation277 
Diluted earnings per share$307,583 43,016 $7.15 
2018
Basic earnings per share$275,749 43,892 $6.28 
Dilutive effect of stock options and deferred stock compensation424 
Diluted earnings per share$275,749 44,316 $6.22