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Earnings (Loss) Per Share (Tables) | 6 Months Ended
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Jun. 30, 2025
Earnings Per Share [Abstract] |
Schedule of Computation of Basic and Diluted Earnings Per Share | The following table sets forth the computation of basic and diluted earnings (loss) per share:
(Dollars and shares in millions, except per share amounts) | Three Months Ended |  | Six Months Ended
June 30, 2025 |  | June 30, 2024 |  | June 30, 2025 |  | June 30, 2024
Numerator: |  |  |  |  |  |  |
Net income (loss) | $ | (73.6) |  |  | $ | 8.1 |  |  | $ | (75.0) |  |  | $ | 15.9 |
Denominator: |  |  |  |  |  |  |
Weighted-average shares outstanding - basic | 18.4 |  |  | 18.6 |  |  | 18.4 |  |  | 18.6 |
Effect of dilutive shares | — |  |  | — |  |  | — |  |  | — |
Weighted-average shares outstanding - diluted | 18.4 |  |  | 18.6 |  |  | 18.4 |  |  | 18.6 |
Basic earnings (loss) per share | $ | (4.00) |  |  | $ | 0.44 |  |  | $ | (4.08) |  |  | $ | 0.85 |
Diluted earnings (loss) per share | $ | (4.00) |  |  | $ | 0.44 |  |  | $ | (4.08) |  |  | $ | 0.85 |

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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 -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482662/260-10-50-1 + Details
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