Quarterly report pursuant to Section 13 or 15(d)

Disaggregated Revenue (Details)

v3.20.1
Disaggregated Revenue (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Disaggregated Revenue    
Sales $ 361,598 $ 359,221
Refining Services    
Disaggregated Revenue    
Sales 99,765 104,957
Catalysts    
Disaggregated Revenue    
Sales 24,817 15,590
Performance Materials    
Disaggregated Revenue    
Sales 65,515 61,041
Performance Chemicals    
Disaggregated Revenue    
Sales 171,501 177,633
Operating segments    
Disaggregated Revenue    
Sales 365,402 363,261
Operating segments | Industrial & process chemicals    
Disaggregated Revenue    
Sales 91,362 91,358
Operating segments | Fuels & emission control    
Disaggregated Revenue    
Sales 55,750 57,690
Operating segments | Packaging & engineered plastics    
Disaggregated Revenue    
Sales 67,297 60,391
Operating segments | Highway safety & construction    
Disaggregated Revenue    
Sales 52,833 49,298
Operating segments | Consumer products    
Disaggregated Revenue    
Sales 64,026 68,509
Operating segments | Natural resources    
Disaggregated Revenue    
Sales 34,134 36,015
Operating segments | Refining Services    
Disaggregated Revenue    
Sales 100,690 105,844
Operating segments | Refining Services | Industrial & process chemicals    
Disaggregated Revenue    
Sales 19,359 18,402
Operating segments | Refining Services | Fuels & emission control    
Disaggregated Revenue    
Sales 55,710 57,690
Operating segments | Refining Services | Packaging & engineered plastics    
Disaggregated Revenue    
Sales 10,734 12,689
Operating segments | Refining Services | Highway safety & construction    
Disaggregated Revenue    
Sales 0 0
Operating segments | Refining Services | Consumer products    
Disaggregated Revenue    
Sales 0 0
Operating segments | Refining Services | Natural resources    
Disaggregated Revenue    
Sales 14,887 17,063
Operating segments | Catalysts    
Disaggregated Revenue    
Sales 24,864 15,866
Operating segments | Catalysts | Industrial & process chemicals    
Disaggregated Revenue    
Sales 47 276
Operating segments | Catalysts | Fuels & emission control    
Disaggregated Revenue    
Sales 0 0
Operating segments | Catalysts | Packaging & engineered plastics    
Disaggregated Revenue    
Sales 24,817 15,590
Operating segments | Catalysts | Highway safety & construction    
Disaggregated Revenue    
Sales 0 0
Operating segments | Catalysts | Consumer products    
Disaggregated Revenue    
Sales 0 0
Operating segments | Catalysts | Natural resources    
Disaggregated Revenue    
Sales 0 0
Operating segments | Performance Materials    
Disaggregated Revenue    
Sales 65,569 61,089
Operating segments | Performance Materials | Industrial & process chemicals    
Disaggregated Revenue    
Sales 12,123 13,028
Operating segments | Performance Materials | Fuels & emission control    
Disaggregated Revenue    
Sales 40 0
Operating segments | Performance Materials | Packaging & engineered plastics    
Disaggregated Revenue    
Sales 17,471 17,382
Operating segments | Performance Materials | Highway safety & construction    
Disaggregated Revenue    
Sales 32,643 27,360
Operating segments | Performance Materials | Consumer products    
Disaggregated Revenue    
Sales 0 0
Operating segments | Performance Materials | Natural resources    
Disaggregated Revenue    
Sales 3,292 3,319
Operating segments | Performance Chemicals    
Disaggregated Revenue    
Sales 174,279 180,462
Operating segments | Performance Chemicals | Industrial & process chemicals    
Disaggregated Revenue    
Sales 59,833 59,652
Operating segments | Performance Chemicals | Fuels & emission control    
Disaggregated Revenue    
Sales 0 0
Operating segments | Performance Chemicals | Packaging & engineered plastics    
Disaggregated Revenue    
Sales 14,275 14,730
Operating segments | Performance Chemicals | Highway safety & construction    
Disaggregated Revenue    
Sales 20,190 21,938
Operating segments | Performance Chemicals | Consumer products    
Disaggregated Revenue    
Sales 64,026 68,509
Operating segments | Performance Chemicals | Natural resources    
Disaggregated Revenue    
Sales 15,955 15,633
Inter-segment sales eliminations    
Disaggregated Revenue    
Sales (3,804) (4,040)
Inter-segment sales eliminations | Refining Services    
Disaggregated Revenue    
Sales (925) (887)
Inter-segment sales eliminations | Catalysts    
Disaggregated Revenue    
Sales (47) (276)
Inter-segment sales eliminations | Performance Materials    
Disaggregated Revenue    
Sales (54) (48)
Inter-segment sales eliminations | Performance Chemicals    
Disaggregated Revenue    
Sales $ (2,778) $ (2,829)