Earnings per Share (Tables)

9 Months Ended

Sep. 30, 2020

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 September 30,		Nine months ended September 30,
	2020	2019	2020	2019
Weighted average shares outstanding – Basic	135,106,969	134,511,819	135,292,163	134,213,571
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	872,149	1,137,891	895,870	1,091,799
Weighted average shares outstanding – Diluted	135,979,118	135,649,710	136,188,033	135,305,370

Schedule of Earnings Per Share, Basic and Diluted

Basic and diluted earnings per share are calculated as follows:

	Three months ended September 30,				Nine months ended September 30,
	2020		2019		2020		2019
Numerator:
Net income attributable to PQ Group Holdings Inc.	$	7,512	$	26,713	$	23,662	$	60,438
Denominator:
Weighted average shares outstanding – Basic	135,106,969		134,511,819		135,292,163		134,213,571
Weighted average shares outstanding – Diluted	135,979,118		135,649,710		136,188,033		135,305,370
Net income per share:
Basic income per share	$	0.06	$	0.20	$	0.17	$	0.45
Diluted income per share	$	0.06	$	0.20	$	0.17	$	0.45

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 September 30,		Nine months ended September 30,
	2020	2019	2020	2019
Restricted stock awards with performance only targets not yet achieved	950,174	1,537,572	1,323,270	1,601,474
Stock options with performance only targets not yet achieved	503,526	578,564	509,782	583,204
Anti-dilutive restricted stock awards, restricted stock units and performance stock units	1,539,506	—	1,432,906	—
Anti-dilutive stock options	844,475	863,063	846,578	863,063