Quarterly report pursuant to Section 13 or 15(d)

Acquisition - Pro Forma Disclosure (Details)

v3.10.0.1
Acquisition - Pro Forma Disclosure (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Business Acquisition        
Pro forma sales       $ 1,130,454
Pro forma net loss       (6,865)
Pro forma net loss attributable to PQ Group Holdings Inc.       $ (7,272)
Pro forma basic and diluted net loss per share (usd per share)       $ (0.07)
Sovitec Mondial S.A.        
Business Acquisition        
Pro forma sales $ 16,455 $ 13,490 $ 46,702 $ 17,194
Net income $ 386 $ 644 $ 1,200 $ 1,148