Earnings per Share (Tables)

6 Months Ended

Jun. 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 June 30,		Six months ended June 30,
	2020	2019	2020	2019
Weighted average shares outstanding – Basic	135,083,126	134,142,552	135,278,764	134,044,972
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	588,704	1,180,472	800,776	1,062,035
Weighted average shares outstanding – Diluted	135,671,830	135,323,024	136,079,540	135,107,007

Schedule of Earnings Per Share, Basic and Diluted

Basic and diluted earnings per share are calculated as follows:

	Three months ended June 30,				Six months ended June 30,
	2020		2019		2020		2019
Numerator:
Net income attributable to PQ Group Holdings Inc.	$	15,926	$	30,574	$	16,150	$	33,725
Denominator:
Weighted average shares outstanding – Basic	135,083,126		134,142,552		135,278,764		134,044,972
Weighted average shares outstanding – Diluted	135,671,830		135,323,024		136,079,540		135,107,007
Net income per share:
Basic income per share	$	0.12	$	0.23	$	0.12	$	0.25
Diluted income per share	$	0.12	$	0.23	$	0.12	$	0.25

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 June 30,		Six months ended June 30,
	2020	2019	2020	2019
Restricted stock awards with performance only targets not yet achieved	1,507,366	1,637,134	1,511,868	1,638,318
Stock options with performance only targets not yet achieved	509,888	586,253	516,110	586,253
Anti-dilutive restricted stock awards, restricted stock units and performance stock units	2,262,974	—	1,421,401	2,012
Anti-dilutive stock options	844,475	863,063	847,641	863,063