Annual report pursuant to Section 13 and 15(d)

Revenue from Contracts with Customers Disaggregated Revenue (Details)

v3.19.3.a.u2
Revenue from Contracts with Customers Disaggregated Revenue (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2019
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Disaggregation of Revenue [Line Items]                      
Sales $ 352,375 $ 423,801 $ 431,675 $ 359,221 $ 380,041 $ 427,203 $ 434,713 $ 366,197 $ 1,567,072 $ 1,608,154 $ 1,472,101
Refining Services                      
Disaggregation of Revenue [Line Items]                      
Sales                 443,683 452,325  
Catalysts                      
Disaggregation of Revenue [Line Items]                      
Sales                 85,558 72,013  
Performance Materials                      
Disaggregation of Revenue [Line Items]                      
Sales                 362,740 377,979  
Performance Chemicals                      
Disaggregation of Revenue [Line Items]                      
Sales                 675,091 705,837  
Operating segments                      
Disaggregation of Revenue [Line Items]                      
Sales                 1,580,850 1,623,275  
Operating segments | Industrial & chemical process                      
Disaggregation of Revenue [Line Items]                      
Sales                 357,239 369,428  
Operating segments | Fuels & emission control                      
Disaggregation of Revenue [Line Items]                      
Sales                 252,294 246,452  
Operating segments | Packaging & engineered plastics                      
Disaggregation of Revenue [Line Items]                      
Sales                 254,450 262,177  
Operating segments | Highway safety & construction                      
Disaggregation of Revenue [Line Items]                      
Sales                 315,439 320,134  
Operating segments | Consumer products                      
Disaggregation of Revenue [Line Items]                      
Sales                 260,868 272,576  
Operating segments | Natural resources                      
Disaggregation of Revenue [Line Items]                      
Sales                 140,560 152,508  
Operating segments | Refining Services                      
Disaggregation of Revenue [Line Items]                      
Sales                 447,081 455,562 398,342
Operating segments | Refining Services | Industrial & chemical process                      
Disaggregation of Revenue [Line Items]                      
Sales                 80,661 77,866  
Operating segments | Refining Services | Fuels & emission control                      
Disaggregation of Revenue [Line Items]                      
Sales                 252,294 246,452  
Operating segments | Refining Services | Packaging & engineered plastics                      
Disaggregation of Revenue [Line Items]                      
Sales                 48,056 59,168  
Operating segments | Refining Services | Highway safety & construction                      
Disaggregation of Revenue [Line Items]                      
Sales                 0 0  
Operating segments | Refining Services | Consumer products                      
Disaggregation of Revenue [Line Items]                      
Sales                 0 0  
Operating segments | Refining Services | Natural resources                      
Disaggregation of Revenue [Line Items]                      
Sales                 66,070 72,076  
Operating segments | Catalysts                      
Disaggregation of Revenue [Line Items]                      
Sales                 85,667 72,099 75,333
Operating segments | Catalysts | Industrial & chemical process                      
Disaggregation of Revenue [Line Items]                      
Sales                 109 86  
Operating segments | Catalysts | Fuels & emission control                      
Disaggregation of Revenue [Line Items]                      
Sales                 0 0  
Operating segments | Catalysts | Packaging & engineered plastics                      
Disaggregation of Revenue [Line Items]                      
Sales                 85,558 72,013  
Operating segments | Catalysts | Highway safety & construction                      
Disaggregation of Revenue [Line Items]                      
Sales                 0 0  
Operating segments | Catalysts | Consumer products                      
Disaggregation of Revenue [Line Items]                      
Sales                 0 0  
Operating segments | Catalysts | Natural resources                      
Disaggregation of Revenue [Line Items]                      
Sales                 0 0  
Operating segments | Performance Materials                      
Disaggregation of Revenue [Line Items]                      
Sales                 362,965 378,279 324,225
Operating segments | Performance Materials | Industrial & chemical process                      
Disaggregation of Revenue [Line Items]                      
Sales                 50,380 51,262  
Operating segments | Performance Materials | Fuels & emission control                      
Disaggregation of Revenue [Line Items]                      
Sales                 0 0  
Operating segments | Performance Materials | Packaging & engineered plastics                      
Disaggregation of Revenue [Line Items]                      
Sales                 68,000 76,489  
Operating segments | Performance Materials | Highway safety & construction                      
Disaggregation of Revenue [Line Items]                      
Sales                 231,081 235,555  
Operating segments | Performance Materials | Consumer products                      
Disaggregation of Revenue [Line Items]                      
Sales                 0 0  
Operating segments | Performance Materials | Natural resources                      
Disaggregation of Revenue [Line Items]                      
Sales                 13,504 14,973  
Operating segments | Performance Chemicals                      
Disaggregation of Revenue [Line Items]                      
Sales                 685,137 717,335 $ 687,645
Operating segments | Performance Chemicals | Industrial & chemical process                      
Disaggregation of Revenue [Line Items]                      
Sales                 226,089 240,214  
Operating segments | Performance Chemicals | Fuels & emission control                      
Disaggregation of Revenue [Line Items]                      
Sales                 0 0  
Operating segments | Performance Chemicals | Packaging & engineered plastics                      
Disaggregation of Revenue [Line Items]                      
Sales                 52,836 54,507  
Operating segments | Performance Chemicals | Highway safety & construction                      
Disaggregation of Revenue [Line Items]                      
Sales                 84,358 84,579  
Operating segments | Performance Chemicals | Consumer products                      
Disaggregation of Revenue [Line Items]                      
Sales                 260,868 272,576  
Operating segments | Performance Chemicals | Natural resources                      
Disaggregation of Revenue [Line Items]                      
Sales                 60,986 65,459  
Eliminations                      
Disaggregation of Revenue [Line Items]                      
Sales                 (13,778) (15,121)  
Eliminations | Refining Services                      
Disaggregation of Revenue [Line Items]                      
Sales                 (3,398) (3,237)  
Eliminations | Catalysts                      
Disaggregation of Revenue [Line Items]                      
Sales                 (109) (86)  
Eliminations | Performance Materials                      
Disaggregation of Revenue [Line Items]                      
Sales                 (225) (300)  
Eliminations | Performance Chemicals                      
Disaggregation of Revenue [Line Items]                      
Sales                 $ (10,046) $ (11,498)