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Earnings per Common Share (Tables) | 6 Months Ended
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Jun. 30, 2020
Earnings Per Share [Abstract] |
Computation of Basic and Diluted Earnings per Share | The following table sets forth the computation of basic and diluted earnings per share for the three and nine month periods ended September 30, 2020 and 2019:
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2020 | 2019 |  | 2020 | 2019
Net income | $ | 48.3 |  | $ | 49.1 |  |  | $ | 114.3 |  | $ | 128.6 |
Weighted average common shares outstanding for basic earnings per share computation | 63,764,474 |  | 64,832,324 |  |  | 64,184,832 |  | 63,232,575 |
Dilutive effects of stock-based compensation | 96,983 |  | 211,162 |  |  | 110,693 |  | 238,708 |
Weighted average common shares outstanding for diluted earnings per common share computation | 63,861,457 |  | 65,043,486 |  |  | 64,295,525 |  | 63,471,283 |
Basic earnings per common share | $ | 0.76 |  | $ | 0.76 |  |  | $ | 1.78 |  | $ | 2.03 |
Diluted earnings per common share | $ | 0.76 |  | $ | 0.76 |  |  | $ | 1.78 |  | $ | 2.03 |
Anti-dilutive unvested time restricted stock | 68,397 |  | 4,808 |  |  | 73,633 |  | 5,569 |

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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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