Quarterly report pursuant to Section 13 or 15(d)

Business Combination - Proforma Disclosure (Details)

v3.8.0.1
Business Combination - Proforma Disclosure (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Business Acquisition [Line Items]      
Pro forma sales $ 381,065 $ 1,130,454 $ 772,549
Pro forma net loss $ (8,289) $ (6,511) (88,300)
PQ Holdings, Eco Services      
Business Acquisition [Line Items]      
Pro forma sales     1,080,310
Pro forma net loss     $ (55,985)