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Earnings per Share Earnings per Share (Tables) | 9 Months Ended
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Sep. 30, 2020
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 and nine months ended September 30, 2020 and 2019:
| Three Months Ended |  | Nine Months Ended
| September 30, |  | September 30,
(In thousands, except per share amounts) | 2020 |  | 2019 |  | 2020 |  | 2019
NUMERATOR |  |  |  |  |  |  |
Net income | $ | 73,537 |  |  | $ | 37,838 |  |  | $ | 159,791 |  |  | $ | 85,807 |
DENOMINATOR |  |  |  |  |  |  |
Basic weighted average shares outstanding | 28,653 |  |  | 27,981 |  |  | 28,554 |  |  | 27,695 |
Effect of dilutive securities: |  |  |  |  |  |  |
Stock option awards | 376 |  |  | 403 |  |  | 253 |  |  | 338 |
Deferred compensation awards | 257 |  |  | 214 |  |  | 223 |  |  | 205 |
Diluted weighted average shares outstanding | $ | 29,286 |  |  | $ | 28,598 |  |  | $ | 29,030 |  |  | $ | 28,238 |
Earnings per common share: |  |  |  |  |  |  |
Basic | $ | 2.57 |  |  | $ | 1.35 |  |  | $ | 5.60 |  |  | $ | 3.10 |
Diluted | $ | 2.51 |  |  | $ | 1.32 |  |  | $ | 5.50 |  |  | $ | 3.04 |
Anti-dilutive equity awards not included in the calculation of diluted earnings per common share | 435 |  |  | — |  |  | 360 |  |  | 412 |

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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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