Quarterly report pursuant to Section 13 or 15(d)

Revenue from Contracts with Customers - Disaggregated Revenue (Details)

v3.19.2
Revenue from Contracts with Customers - Disaggregated Revenue (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Disaggregated Revenue        
Sales $ 431,675 $ 434,713 $ 790,896 $ 800,910
Refining Services        
Disaggregated Revenue        
Sales 116,395 111,259 221,352 211,161
Catalysts        
Disaggregated Revenue        
Sales 21,071 17,293 36,661 33,766
Performance Materials        
Disaggregated Revenue        
Sales 118,768 126,277 179,809 188,947
Performance Chemicals        
Disaggregated Revenue        
Sales 175,441 179,884 353,074 367,036
Operating segments        
Disaggregated Revenue        
Sales 434,847 439,717 798,108 809,609
Operating segments | Industrial & process chemicals        
Disaggregated Revenue        
Sales 95,348 97,284 186,492 192,477
Operating segments | Fuels & emission control        
Disaggregated Revenue        
Sales 63,505 60,212 121,195 116,209
Operating segments | Packaging & engineered plastics        
Disaggregated Revenue        
Sales 66,863 67,885 127,467 127,936
Operating segments | Highway safety & construction        
Disaggregated Revenue        
Sales 107,554 110,746 156,853 157,891
Operating segments | Consumer products        
Disaggregated Revenue        
Sales 65,440 65,388 133,949 142,118
Operating segments | Natural resources        
Disaggregated Revenue        
Sales 36,137 38,202 72,152 72,978
Operating segments | Refining Services        
Disaggregated Revenue        
Sales 117,290 112,071 223,134 212,785
Operating segments | Refining Services | Industrial & process chemicals        
Disaggregated Revenue        
Sales 21,903 17,281 40,305 34,320
Operating segments | Refining Services | Fuels & emission control        
Disaggregated Revenue        
Sales 63,505 60,212 121,195 116,209
Operating segments | Refining Services | Packaging & engineered plastics        
Disaggregated Revenue        
Sales 14,067 16,626 26,756 28,396
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 17,815 17,952 34,878 33,860
Operating segments | Catalysts        
Disaggregated Revenue        
Sales 20,857 17,347 36,723 33,820
Operating segments | Catalysts | Industrial & process chemicals        
Disaggregated Revenue        
Sales 0 54 62 54
Operating segments | Catalysts | Fuels & emission control        
Disaggregated Revenue        
Sales 0 0 0 0
Operating segments | Catalysts | Packaging & engineered plastics        
Disaggregated Revenue        
Sales 20,857 17,293 36,661 33,766
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 118,872 126,538 179,961 189,280
Operating segments | Performance Materials | Industrial & process chemicals        
Disaggregated Revenue        
Sales 12,783 14,289 25,812 26,807
Operating segments | Performance Materials | Fuels & emission control        
Disaggregated Revenue        
Sales 0 0 0 0
Operating segments | Performance Materials | Packaging & engineered plastics        
Disaggregated Revenue        
Sales 17,595 19,593 34,977 39,485
Operating segments | Performance Materials | Highway safety & construction        
Disaggregated Revenue        
Sales 85,257 88,767 112,617 115,426
Operating segments | Performance Materials | Consumer products        
Disaggregated Revenue        
Sales 0 0 0 0
Operating segments | Performance Materials | Natural resources        
Disaggregated Revenue        
Sales 3,237 3,889 6,555 7,562
Operating segments | Performance Chemicals        
Disaggregated Revenue        
Sales 177,828 183,761 358,290 373,724
Operating segments | Performance Chemicals | Industrial & process chemicals        
Disaggregated Revenue        
Sales 60,662 65,660 120,313 131,296
Operating segments | Performance Chemicals | Fuels & emission control        
Disaggregated Revenue        
Sales 0 0 0 0
Operating segments | Performance Chemicals | Packaging & engineered plastics        
Disaggregated Revenue        
Sales 14,344 14,373 29,073 26,289
Operating segments | Performance Chemicals | Highway safety & construction        
Disaggregated Revenue        
Sales 22,297 21,979 44,236 42,465
Operating segments | Performance Chemicals | Consumer products        
Disaggregated Revenue        
Sales 65,440 65,388 133,949 142,118
Operating segments | Performance Chemicals | Natural resources        
Disaggregated Revenue        
Sales 15,085 16,361 30,719 31,556
Inter-segment sales eliminations        
Disaggregated Revenue        
Sales (3,172) (5,004) (7,212) (8,699)
Inter-segment sales eliminations | Refining Services        
Disaggregated Revenue        
Sales (895) (812) (1,782) (1,624)
Inter-segment sales eliminations | Catalysts        
Disaggregated Revenue        
Sales 214 (54) (62) (54)
Inter-segment sales eliminations | Performance Materials        
Disaggregated Revenue        
Sales (104) (261) (152) (333)
Inter-segment sales eliminations | Performance Chemicals        
Disaggregated Revenue        
Sales $ (2,387) $ (3,877) $ (5,216) $ (6,688)