Quarterly report pursuant to Section 13 or 15(d)

Reportable Segments - Summary Financial Information by Reportable Segment (Details)

v3.19.1
Reportable Segments - Summary Financial Information by Reportable Segment (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Segment Reporting, Revenue Reconciling Item    
Sales $ 359,221 $ 366,197
Equity in net income from affiliated companies 2,064 11,852
Refining Services    
Segment Reporting, Revenue Reconciling Item    
Sales 104,957 99,902
Catalysts    
Segment Reporting, Revenue Reconciling Item    
Sales 15,590 16,473
Catalysts | Zeolyst Joint Venture    
Segment Reporting, Revenue Reconciling Item    
Segment Adjusted EBITDA 8,357 16,807
Equity in net income from affiliated companies 2,036 11,826
Amortization of investment in affiliate step-up 2,558 1,658
Joint venture depreciation, amortization and interest 3,763 3,323
Performance Materials    
Segment Reporting, Revenue Reconciling Item    
Sales 61,041 62,670
Performance Chemicals    
Segment Reporting, Revenue Reconciling Item    
Sales 177,633 187,152
Operating segments    
Segment Reporting, Revenue Reconciling Item    
Sales 363,261 369,892
Segment Adjusted EBITDA 111,046 115,573
Operating segments | Refining Services    
Segment Reporting, Revenue Reconciling Item    
Sales 105,844 100,714
Segment Adjusted EBITDA 39,731 35,532
Operating segments | Catalysts    
Segment Reporting, Revenue Reconciling Item    
Sales 15,866 16,473
Segment Adjusted EBITDA 18,127 22,889
Operating segments | Catalysts | Zeolyst Joint Venture    
Segment Reporting, Revenue Reconciling Item    
Sales 29,478 38,349
Operating segments | Performance Materials    
Segment Reporting, Revenue Reconciling Item    
Sales 61,089 62,742
Segment Adjusted EBITDA 10,515 12,058
Operating segments | Performance Chemicals    
Segment Reporting, Revenue Reconciling Item    
Sales 180,462 189,963
Segment Adjusted EBITDA 42,673 45,094
Eliminations    
Segment Reporting, Revenue Reconciling Item    
Sales (4,040) (3,695)
Eliminations | Refining Services    
Segment Reporting, Revenue Reconciling Item    
Sales (887) (812)
Eliminations | Catalysts    
Segment Reporting, Revenue Reconciling Item    
Sales (276) 0
Eliminations | Performance Materials    
Segment Reporting, Revenue Reconciling Item    
Sales (48) (72)
Eliminations | Performance Chemicals    
Segment Reporting, Revenue Reconciling Item    
Sales $ (2,829) $ (2,811)