Quarterly report pursuant to Section 13 or 15(d)

Revenue from Contracts with Customers - Disaggregated Revenue (Details)

v3.19.3
Revenue from Contracts with Customers - Disaggregated Revenue (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Disaggregated Revenue        
Sales $ 423,801 $ 427,203 $ 1,214,697 $ 1,228,113
Refining Services        
Disaggregated Revenue        
Sales 117,522 122,536 338,874 333,698
Catalysts        
Disaggregated Revenue        
Sales 25,565 16,347 62,226 50,113
Performance Materials        
Disaggregated Revenue        
Sales 115,116 115,499 294,925 304,446
Performance Chemicals        
Disaggregated Revenue        
Sales 165,598 172,821 518,672 539,856
Operating segments        
Disaggregated Revenue        
Sales 427,030 429,818 1,225,138 1,239,427
Operating segments | Industrial & process chemicals        
Disaggregated Revenue        
Sales 87,148 87,879 273,640 280,357
Operating segments | Fuels & emission control        
Disaggregated Revenue        
Sales 70,048 66,095 191,243 182,304
Operating segments | Packaging & engineered plastics        
Disaggregated Revenue        
Sales 66,696 64,832 194,163 192,767
Operating segments | Highway safety & construction        
Disaggregated Revenue        
Sales 103,302 105,204 260,155 263,095
Operating segments | Consumer products        
Disaggregated Revenue        
Sales 64,849 67,138 198,798 209,256
Operating segments | Natural resources        
Disaggregated Revenue        
Sales 34,987 38,670 107,139 111,648
Operating segments | Refining Services        
Disaggregated Revenue        
Sales 118,335 123,369 341,469 336,154
Operating segments | Refining Services | Industrial & process chemicals        
Disaggregated Revenue        
Sales 20,180 21,027 60,485 55,347
Operating segments | Refining Services | Fuels & emission control        
Disaggregated Revenue        
Sales 70,048 66,095 191,243 182,304
Operating segments | Refining Services | Packaging & engineered plastics        
Disaggregated Revenue        
Sales 12,197 16,636 38,953 45,032
Operating segments | Refining Services | Highway safety & construction        
Disaggregated Revenue        
Sales 0 0 0 0
Operating segments | Refining Services | Consumer products        
Disaggregated Revenue        
Sales 0 0 0 0
Operating segments | Refining Services | Natural resources        
Disaggregated Revenue        
Sales 15,910 19,611 50,788 53,471
Operating segments | Catalysts        
Disaggregated Revenue        
Sales 25,612 16,347 62,335 50,167
Operating segments | Catalysts | Industrial & process chemicals        
Disaggregated Revenue        
Sales 47 0 109 54
Operating segments | Catalysts | Fuels & emission control        
Disaggregated Revenue        
Sales 0 0 0 0
Operating segments | Catalysts | Packaging & engineered plastics        
Disaggregated Revenue        
Sales 25,565 16,347 62,226 50,113
Operating segments | Catalysts | Highway safety & construction        
Disaggregated Revenue        
Sales 0 0 0 0
Operating segments | Catalysts | Consumer products        
Disaggregated Revenue        
Sales 0 0 0 0
Operating segments | Catalysts | Natural resources        
Disaggregated Revenue        
Sales 0 0 0 0
Operating segments | Performance Materials        
Disaggregated Revenue        
Sales 115,134 115,380 295,095 304,660
Operating segments | Performance Materials | Industrial & process chemicals        
Disaggregated Revenue        
Sales 12,225 11,263 38,037 38,070
Operating segments | Performance Materials | Fuels & emission control        
Disaggregated Revenue        
Sales 0 0 0 0
Operating segments | Performance Materials | Packaging & engineered plastics        
Disaggregated Revenue        
Sales 16,886 17,763 51,863 57,247
Operating segments | Performance Materials | Highway safety & construction        
Disaggregated Revenue        
Sales 82,502 82,738 195,119 198,165
Operating segments | Performance Materials | Consumer products        
Disaggregated Revenue        
Sales 0 0 0 0
Operating segments | Performance Materials | Natural resources        
Disaggregated Revenue        
Sales 3,521 3,616 10,076 11,178
Operating segments | Performance Chemicals        
Disaggregated Revenue        
Sales 167,949 174,722 526,239 548,446
Operating segments | Performance Chemicals | Industrial & process chemicals        
Disaggregated Revenue        
Sales 54,696 55,589 175,009 186,886
Operating segments | Performance Chemicals | Fuels & emission control        
Disaggregated Revenue        
Sales 0 0 0 0
Operating segments | Performance Chemicals | Packaging & engineered plastics        
Disaggregated Revenue        
Sales 12,048 14,086 41,121 40,375
Operating segments | Performance Chemicals | Highway safety & construction        
Disaggregated Revenue        
Sales 20,800 22,466 65,036 64,930
Operating segments | Performance Chemicals | Consumer products        
Disaggregated Revenue        
Sales 64,849 67,138 198,798 209,256
Operating segments | Performance Chemicals | Natural resources        
Disaggregated Revenue        
Sales 15,556 15,443 46,275 46,999
Inter-segment sales eliminations        
Disaggregated Revenue        
Sales (3,229) (2,615) (10,441) (11,314)
Inter-segment sales eliminations | Refining Services        
Disaggregated Revenue        
Sales (813) (833) (2,595) (2,456)
Inter-segment sales eliminations | Catalysts        
Disaggregated Revenue        
Sales (47) 0 (109) (54)
Inter-segment sales eliminations | Performance Materials        
Disaggregated Revenue        
Sales (18) 119 (170) (214)
Inter-segment sales eliminations | Performance Chemicals        
Disaggregated Revenue        
Sales $ (2,351) $ (1,901) $ (7,567) $ (8,590)