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Earnings per Share (Tables)
12 Months Ended
Dec. 31, 2021
Earnings Per Share [Abstract]  
Schedule of from Basic to Diluted Weighted Average Number of Shares Outstanding
The reconciliation from basic to diluted weighted average shares outstanding is as follows:
Years ended
December 31,
202120202019
Weighted average shares outstanding – Basic136,167,384 135,528,977 134,389,667 
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 conversions1,541,547921,9761,159,027
Weighted average shares outstanding – Diluted137,708,931 136,450,953 135,548,694 
Schedule of Earnings Per Share, Basic and Diluted
Basic and diluted earnings per share are calculated as follows:
Years ended
December 31,
202120202019
Numerator:
Net (loss) income attributable to Ecovyst Inc.$(139,949)$(278,771)$79,539 
Denominator:
Weighted average shares outstanding – Basic136,167,384 135,528,977 134,389,667 
Weighted average shares outstanding – Diluted137,708,931 136,450,953 135,548,694 
Net (loss) income per share:
Basic (loss) income per share$(1.03)$(2.06)$0.59 
Diluted (loss) income per share$(1.02)$(2.04)$0.59 
Schedule of Antidilutive 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 year that were excluded from the calculation of diluted earnings per share:
Years ended
December 31,
202120202019
Restricted stock awards with performance only targets not yet achieved839,432 1,225,855 1,584,980 
Stock options with performance only targets not yet achieved373,105 507,461 558,283 
Anti-dilutive restricted stock awards, restricted stock units and performance stock units6,214 1,453,120 — 
Anti-dilutive stock options244,473 846,049 863,063