Schedule I - Condensed Statements of Income (Details) - USD ($) $ in Thousands |
3 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2020 |
Sep. 30, 2020 |
Jun. 30, 2020 |
Mar. 31, 2020 |
Dec. 31, 2019 |
Sep. 30, 2019 |
Jun. 30, 2019 |
Mar. 31, 2019 |
Dec. 31, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
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| Condensed Financial Statements, Captions [Line Items] | |||||||||||
| Stock compensation expense | $ 17,194 | $ 13,281 | $ 16,899 | ||||||||
| Net (loss) income | $ (302,434) | $ 7,514 | $ 15,925 | $ 224 | $ 19,103 | $ 26,704 | $ 30,578 | $ 3,154 | (278,771) | 79,539 | 58,300 |
| Other comprehensive income (loss), net of tax: | |||||||||||
| Comprehensive (loss) income attributable to Ecovyst Inc. | (293,263) | 101,421 | 14,885 | ||||||||
| Parent Company [Member] | |||||||||||
| Condensed Financial Statements, Captions [Line Items] | |||||||||||
| Stock compensation expense | 25,200 | 18,225 | 19,464 | ||||||||
| Equity in net loss (income) from subsidiaries | 253,571 | (97,764) | (77,764) | ||||||||
| Net (loss) income | (278,771) | 79,539 | 58,300 | ||||||||
| Other comprehensive income (loss), net of tax: | |||||||||||
| Pension and postretirement benefits | 1,938 | 2,430 | (7,958) | ||||||||
| Net gain (loss) from hedging activities | 166 | (2,665) | (330) | ||||||||
| Foreign currency translation | (16,596) | 22,117 | (35,127) | ||||||||
| Total other comprehensive (loss) income | (14,492) | 21,882 | (43,415) | ||||||||
| Comprehensive (loss) income attributable to Ecovyst Inc. | $ (293,263) | $ 101,421 | $ 14,885 | ||||||||
| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount after tax of income (loss) of subsidiary attributable to the parent entity. No definition available.
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- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount, after tax and reclassification adjustment, of (increase) decrease in accumulated other comprehensive income for defined benefit plan, attributable to parent. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount after tax and reclassification adjustments, of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss), attributable to parent entity. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature, attributable to parent entity. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount after tax of other comprehensive income (loss) attributable to parent entity. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References No definition available.
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- Definition Amount of noncash expense for share-based payment arrangement. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Details
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