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Earnings per Share Earnings per Share (Tables) | 3 Months Ended
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Mar. 31, 2021
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] | The table below presents a reconciliation between basic and diluted weighted average shares outstanding, net income, and basic and diluted income per share for the three months ended March 31, 2021 and 2020:
| Three Months Ended |  |
| March 31, |  |
(In thousands, except per share amounts) | 2021 |  | 2020 |  |  |  |
NUMERATOR |  |  |  |  |  |  |
Net income | $ | 84,866 |  |  | $ | 31,746 |  |  |  |  |
DENOMINATOR |  |  |  |  |  |  |
Basic weighted average shares outstanding | 29,015 |  |  | 28,478 |  |  |  |  |
Effect of dilutive securities: |  |  |  |  |  |  |
Stock option awards | 431 |  |  | 310 |  |  |  |  |
Deferred compensation awards | 297 |  |  | 221 |  |  |  |  |
Diluted weighted average shares outstanding | $ | 29,743 |  |  | $ | 29,009 |  |  |  |  |
Earnings per common share: |  |  |  |  |  |  |
Basic | $ | 2.92 |  |  | $ | 1.11 |  |  |  |  |
Diluted | $ | 2.85 |  |  | $ | 1.09 |  |  |  |  |
Anti-dilutive equity awards not included in the calculation of diluted earnings per common share | — |  |  | 211 |  |  |  |  |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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