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Goodwill | 9 Months Ended
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Sep. 30, 2025
Goodwill and Intangible Assets Disclosure [Abstract] |
Goodwill | Goodwill The carrying amount of goodwill attributable to each reportable segment are as follows:
Goodwill | Rubber |  | Specialty |  | Total
| (In millions)
Balance as of January 1, 2024 | $ | 30.5 |  |  | $ | 45.6 |  |  | $ | 76.1 |
Foreign currency impact | (1.9) |  |  | (2.7) |  |  | (4.6) |
Balance as of December 31, 2024 | 28.6 |  |  | 42.9 |  |  | 71.5 |
Impairment | (32.3) |  |  | (48.5) |  |  | (80.8) |
Foreign currency impact | 3.7 |  |  | 5.6 |  |  | 9.3 |
Balance as of September 30, 2025 1 | $ | — |  |  | $ | — |  |  | $ | — |
1 At September 30, 2025, accumulated goodwill impairment was $80.8 million. Goodwill is tested for impairment annually at September 30, or whenever events or changes in circumstances indicate that the fair value of a reporting unit with goodwill is below its carrying amount. During the third quarter of 2025, we experienced a significant decrease in the trading price of our common stock. In our Rubber reporting unit, elevated levels of low value tire imports from Asia during 2025 have indirectly impacted our demand in core Western markets and our overall profitability. In our Specialty reporting unit, persistently soft industrial economies coupled with uncertainty related to global trade, tariffs and regulatory matters have impacted our demand and portfolio mix. As a result, we performed quantitative impairment assessment for each of our two reporting units at September 30, 2025. For our quantitative assessment, we estimated the value of each of our reporting units using both a discounted cash flows (“DCF”) analysis and a multiple of expected future cash flows, such as those used by third-party analysts. The DCF analysis included market participant weighted average cost of capital, revenue, gross margin, capital expenditures, and long-term growth rates based on historical information and our best estimate of future forecasts. The market approach involved significant judgment, including the selection of an appropriate peer group, selection of valuation multiples, and determination of the appropriate weighting in our valuation model. These assumptions included the use of significant unobservable inputs, representative of a Level 3 fair value measurement. Based on our quantitative assessments, we concluded that the calculated fair value of our Rubber Carbon Black (“RCB”) and Specialty Carbon Black (“SCB”) reporting units were lower than their respective book values. As a result, we recognized a non-cash goodwill impairment charge of $80.8 million in the third quarter of 2025 for both reporting units. No tax benefit was recorded because it is a non-tax-deductible expense. There were no impairments charge for the three or nine months ended September 30, 2024. See “Note A. Significant Accounting Policies”, included in our Annual Report on Form 10-K for the year ended December 31, 2024, for additional information relating to our goodwill accounting policy.

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