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Earnings per Share (Tables) | 3 Months Ended
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Mar. 31, 2023
Earnings Per Share [Abstract] |
Reconciliation from Basic to Diluted Weighted Average Number of Shares Outstanding | The reconciliation from basic to diluted weighted average shares outstanding is as follows:
|  |  |  | Three months ended March 31,
|  |  |  |  |  | 2023 |  | 2022
Weighted average shares outstanding – Basic |  |  |  |  |  | 122,178,867 |  |  | 137,684,773 |
Dilutive effect of unvested common shares and restricted stock units with service conditions, performance stock units considered probable of vesting and assumed stock option exercises and conversions |  |  |  |  |  | — |  |  | 1,064,292 |
Weighted average shares outstanding – Diluted |  |  |  |  |  | 122,178,867 |  |  | 138,749,065 |
Schedule of Earnings Per Share, Basic and Diluted | Basic and diluted (loss) income per share are calculated as follows:
|  |  |  | Three months ended March 31,
|  |  |  |  |  | 2023 |  | 2022
Numerator: |  |  |  |  |  |  |  |
Net (loss) income attributable to Ecovyst Inc. |  |  |  |  |  | $ | (1,471) |  |  | $ | 7,875 |
Denominator: |  |  |  |  |  |  |  |
Weighted average shares outstanding – Basic |  |  |  |  |  | 122,178,867 |  |  | 137,684,773 |
Weighted average shares outstanding – Diluted |  |  |  |  |  | 122,178,867 |  |  | 138,749,065 |
Net (loss) income per share: |  |  |  |  |  |  |  |
Basic (loss) income per share |  |  |  |  |  | $ | (0.01) |  |  | $ | 0.06 |
Diluted (loss) income per share |  |  |  |  |  | $ | (0.01) |  |  | $ | 0.06 |
Schedule of Securities Excluded from Computation of Earnings Per Share | The table below presents the details of the Company’s weighted average equity-based awards outstanding during each respective period that were excluded from the calculation of diluted earnings per share:
|  |  |  | Three months ended March 31,
|  |  |  |  |  | 2023 |  | 2022
Restricted stock awards with performance only targets not achieved |  |  |  |  |  | 200,096 |  |  | 613,903 |
Stock options with performance only targets not achieved |  |  |  |  |  | 208,968 |  |  | 326,689 |
Anti-dilutive restricted stock units and performance stock units(1) |  |  |  |  |  | 432,308 |  |  | — |
Anti-dilutive stock options(1) |  |  |  |  |  | 695,777 |  |  | 807,301 |
(1)Does not include 1,044,098 of restricted stock units and performance stock units, and 352,771 of stock options, for the three months ended March 31, 2023 due to the net loss attributable to Ecovyst Inc. for the period.

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- Definition Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
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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 -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
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