| Fiscal period | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|
| Period End Date | 12/31/2024 | 12/31/2023 | 12/31/2022 | 12/31/2021 | 12/31/2020 | 12/31/2019 | 12/31/2018 | 12/31/2017 | 12/31/2016 | 12/31/2015 |
|---|
| Net Sales | 1,845.40 | 1,948.80 | 1,963.70 | 1,483.40 | 1,193.10 | 1,513.30 | 1,476.90 | 1,306.80 | 883.40 | 1,012.30 |
| Total Revenues | 1,845.40 | 1,948.80 | 1,963.70 | 1,483.40 | 1,193.10 | -- | 1,476.90 | 1,306.80 | 883.40 | 1,012.30 |
| Cost of goods sold | 1,302.50 | 1,357.70 | 1,377.00 | 1,048.50 | 850.40 | 1,047.10 | 1,041.90 | 903.50 | 551.10 | 666.30 |
| Gross Profit | 542.90 | 591.10 | 586.70 | 434.90 | 342.70 | 466.20 | 435.00 | 403.30 | 332.30 | 346.00 |
| Impairment of Octane Additives business goodwill | -- | -- | -- | -- | -- | -- | -- | -- | -- | 0.00 |
| Amortization of intangible assets | -- | -- | 0.00 | -- | 19.80 | -- | -- | -- | -- | -- |
| Research and development | 47.80 | 41.70 | 38.70 | 37.40 | 30.90 | 35.40 | 33.40 | 31.40 | 25.40 | 25.30 |
| Selling, general and administrative | 314.00 | 387.80 | 360.70 | 267.20 | 237.00 | 280.90 | 261.00 | 239.50 | 209.50 | 206.70 |
| Restructuring charge | -- | -- | 0.00 | -- | 21.30 | 0.00 | 7.10 | -- | -- | -- |
| Profit on disposals, net | 0.20 | -- | -- | 1.80 | -- | 0.00 | 0.00 | (0.90) | (1.40) | 1.60 |
| Fair value of contingent consideration | (3.40) | -- | -- | -- | -- | -- | 0.00 | 0.00 | 9.40 | 40.70 |
| Foreign exchange loss on liquidation of subsidiary | -- | -- | -- | -- | -- | 0.00 | 0.00 | (1.80) | -- | -- |
| Total Operating Expenses | 365.00 | 429.50 | (399.40) | (302.80) | 309.00 | 316.30 | 301.50 | 273.60 | 226.90 | 189.70 |
| Operating Income (loss) | 177.90 | 161.60 | 187.30 | 132.10 | 33.70 | 149.90 | 133.50 | 129.70 | 105.40 | 156.30 |
| Interest expense | -- | -- | 1.10 | 1.50 | 1.80 | 4.80 | 6.90 | 8.20 | 3.20 | 4.00 |
| Minority interest | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Interest income | 9.30 | 2.30 | -- | -- | -- | -- | -- | -- | -- | -- |
| Other net income/(expense) | 9.60 | 10.50 | (1.60) | 3.80 | 7.80 | 5.30 | 5.00 | 6.60 | 0.90 | 0.00 |
| Pension scheme settlement charge | (155.60) | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Pre-Tax Income | 41.20 | 174.40 | 184.60 | 134.40 | 39.70 | 150.40 | 131.60 | 128.10 | 103.10 | 152.30 |
| Income taxes | 5.60 | 35.30 | 51.60 | 41.30 | 11.00 | 38.20 | 46.60 | 66.30 | 21.80 | 32.80 |
| Share of affiliated company earnings | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Income (loss) from Continuing Operations | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Discontinued operations, net of tax | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Extraordinary item, net of income taxes | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Cumulative Effect of Change in Accounting Principle | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Consolidated Net Income (Loss) | 35.60 | 139.10 | 133.00 | 93.10 | 28.70 | 112.20 | 85.00 | 61.80 | 81.30 | 119.50 |
| Net Income (Loss) Available to Common Shareholders | 35.60 | 139.10 | 133.00 | 93.10 | 28.70 | 112.20 | 85.00 | 61.80 | 81.30 | 119.50 |
| Earnings / (loss) per share- continuing operations | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Net Earnings Per Share (Basic) | 1.43 | 5.60 | 5.37 | 3.78 | 1.17 | 4.58 | 3.48 | 2.56 | 3.39 | 4.96 |
| Earnings / (loss) per share- continuing operations | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Net Earnings Per Share (Diluted) | 1.42 | 5.56 | 5.32 | 3.75 | 1.16 | 4.54 | 3.45 | 2.52 | 3.33 | 4.86 |
| Weighted Average Shares Outstanding (Basic) | 24.93 | 24.85 | 24.79 | 24.65 | 24.56 | 24.48 | 24.40 | 24.15 | 24.00 | 24.11 |
| Weighted Average Shares Outstanding (Diluted) | 25.12 | 25.02 | 24.98 | 24.85 | 24.78 | 24.73 | 24.60 | 24.49 | 24.44 | 24.61 |