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Earnings Per Share | 9 Months Ended
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Sep. 30, 2018
Earnings (Loss) Per Share (Thousands of Dollars and Shares Except Per Share Data) [Abstract] |
Earnings (Loss) Per Share | (4) Earnings Per Share Net earnings per share data for the quarter and nine-month periods ended September 30, 2018 and October 1, 2017 were computed as follows:
| 2018 |  | 2017
Quarter | Basic |  | Diluted |  | Basic |  | Diluted
Net earnings | $ | 263,861 |  |  | 263,861 |  |  | 265,583 |  |  | 265,583
Average shares outstanding |  | 127,161 |  |  | 127,161 |  |  | 125,170 |  |  | 125,170
Effect of dilutive securities: |  |  |  |  |  |  |  |  |  |  |
Options and other share-based awards |  | - |  |  | 731 |  |  | - |  |  | 1,980
Equivalent Shares |  | 127,161 |  |  | 127,892 |  |  | 125,170 |  |  | 127,150
Net earnings per common share | $ | 2.08 |  |  | 2.06 |  |  | 2.12 |  |  | 2.09
| 2018 |  | 2017
Nine Months | Basic |  | Diluted |  | Basic |  | Diluted
Net earnings | $ | 211,668 |  |  | 211,668 |  |  | 401,905 |  |  | 401,905
Average shares outstanding |  | 125,982 |  |  | 125,982 |  |  | 125,204 |  |  | 125,204
Effect of dilutive securities: |  |  |  |  |  |  |  |  |  |  |
Options and other share-based awards |  | - |  |  | 792 |  |  | - |  |  | 2,044
Equivalent Shares |  | 125,982 |  |  | 126,774 |  |  | 125,204 |  |  | 127,248
Net earnings per common share | $ | 1.68 |  |  | 1.67 |  |  | 3.21 |  |  | 3.16
For the quarter s ended September 30, 2018 and October 1, 2017, options and restricted stock units totaling 949 and 450, respectively, were excluded from the calculation of diluted earnings per share because to include them would have been antidilutive. For the nine-month periods ended September 30, 2018 and October 1, 2017, options and restricted stock units totaling 1,124 and 514, respectively, were excluded from the calculation of diluted earnings per share because to incl ude them would have been antidilutive.

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
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