Annual report pursuant to Section 13 and 15(d)

Earnings per Share - Reconciliation of Net Income (Details)

v3.20.4
Earnings per Share - Reconciliation of Net Income (Details) - USD ($)
$ / shares in Units, $ 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
Numerator:                      
Net income attributable to PQ Group Holdings Inc. $ (299,059) $ 4,138 $ 15,926 $ 224 $ 27,169 $ 18,645 $ 30,574 $ 3,151 $ (278,771) $ 79,539 $ 58,300
Denominator:                      
Weighted average shares outstanding – Basic (shares) 135,406,081 135,106,969 135,083,126 135,240,897 134,912,212 134,511,819 134,142,552 133,946,308 135,528,977 134,389,667 133,380,567
Weighted average shares outstanding – Diluted (shares) 135,406,081 135,979,118 135,671,830 136,086,082 136,151,739 135,649,710 135,323,024 134,894,354 135,528,977 135,548,694 134,684,931
Net (loss) income per share:                      
Basic (loss) income per share $ (2.21) $ 0.03 $ 0.12 $ 0 $ 0.20 $ 0.14 $ 0.23 $ 0.02 $ (2.06) $ 0.59 $ 0.44
Diluted (loss) income per share $ (2.21) $ 0.03 $ 0.12 $ 0 $ 0.20 $ 0.14 $ 0.23 $ 0.02 $ (2.06) $ 0.59 $ 0.43