Segment reporting - Major customers (Details) - USD ($) |
12 Months Ended | ||
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Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
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| Disclosure of major customers [abstract] | |||
| Sales | $ 1,335,121,000 | $ 1,643,939,000 | $ 1,650,034,000 |
| Top Ten Customers | |||
| Disclosure of major customers [abstract] | |||
| Sales | $ 599,501,000 | $ 921,029,000 | $ 1,322,724,000 |
| Dow Silicones Corporation | |||
| Disclosure of major customers [abstract] | |||
| Percentage of Company's sales | 12.30% | 16.80% | 17.00% |
| Trade receivables | $ 21,663,000 | $ 28,109,000 | |
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- References No definition available.
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- References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition The amount of an entity’s right to consideration in exchange for goods or services that the entity has transferred to a customer that is unconditional. A right to consideration is unconditional if only the passage of time is required before payment of that consideration is due. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Details
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- Details
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