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Earnings Per Share ("EPS") (Tables) | 3 Months Ended
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Mar. 31, 2021
Earnings Per Share [Abstract] |
Calculation of basic and diluted earnings per share | The calculation of basic and diluted earnings per share for the three months ended March 31, 2021 and 2020 is set forth in the following table (in millions, except per share amounts):
| Three Months Ended March 31,
| 2021 |  | 2020
Net (loss) income | $ | (7.6) |  |  | $ | 3.7 |
Weighted Average Shares Outstanding: |  |  |
Basic weighted average shares outstanding | 48.0 |  |  | 47.8 |
Dilutive effect of stock options and restricted share unit awards | — |  |  | 0.2 |
Diluted weighted average shares outstanding | 48.0 |  |  | 48.0 |
(Loss) Earnings Per Share: |  |  |
Basic | $ | (0.16) |  |  | $ | 0.08 |
Diluted | $ | (0.16) |  |  | $ | 0.08 |

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- Definition Tabular disclosure of the weighted average number of shares used in calculating basic net earnings per share (or unit) and diluted earnings per share (or unit). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
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