Quarterly report pursuant to Section 13 or 15(d)

Earnings per Share - Reconciliation of Net Income (Loss) (Details)

v3.8.0.1
Earnings per Share - Reconciliation of Net Income (Loss) (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Numerator:        
Net income (loss) attributable to PQ Group Holdings Inc. $ (3,345) $ (10,017) $ (7,408) $ (90,410)
Denominator:        
Weighted average shares outstanding – Basic (shares) 104,096,837 103,783,719 104,020,180 81,986,221
Weighted average shares outstanding – Diluted (shares) 104,096,837 103,783,719 104,020,180 81,986,221
Net loss per common share:        
Basic net loss per share (usd per share) $ (0.03) $ (0.10) $ (0.07) $ (1.10)
Diluted net loss per share (usd per share) $ (0.03) $ (0.10) $ (0.07) $ (1.10)