Annual report [Section 13 and 15(d), not S-K Item 405]

Divestitures - Income Information of Discontinued Operations (Details)

v3.25.4
Divestitures - Income Information of Discontinued Operations (Details) - USD ($)
3 Months Ended 12 Months Ended
Sep. 10, 2025
Sep. 30, 2025
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Dispositions [Line Items]          
Goodwill impairment charge     $ 0    
Zeolyst Joint Venture          
Dispositions [Line Items]          
Impairment of investment in affiliated companies       $ 65,000  
PQ Holdings, Eco Services          
Dispositions [Line Items]          
Net purchase accounting fair value adjustments     153,444,000 155,138,000  
Amortization of investment in affiliate step-up     1,694,000 3,761,000 $ 6,403,000
In process research and development          
Dispositions [Line Items]          
Goodwill impairment charge       3,900,000  
Advanced Materials And Catalysts Segment          
Dispositions [Line Items]          
Sales     96,890,000 106,198,000 106,273,000
Cost of goods sold     61,997,000 68,060,000 74,757,000
Gross profit     34,893,000 38,138,000 31,516,000
Selling, general and administrative expenses     18,828,000 18,485,000 18,680,000
Goodwill impairment charge $ 49,636,000 $ 49,636,000 49,636,000 0 0
Other operating expense, net     8,311,000 6,692,000 5,737,000
Loss on sale, before taxes   $ 83,898,000 32,967,000 0 0
Operating (loss) income     (74,849,000) 12,961,000 7,099,000
Equity in net (income) from affiliated companies     (19,381,000) (15,112,000) (30,624,000)
Impairment of investment in affiliated companies     0 65,000,000 0
Interest expense, net     10,595,000 12,938,000 13,033,000
Other expense (income), net     466,000 362,000 (300,000)
(Loss) income from discontinued operations before income taxes     (66,529,000) (50,227,000) 24,990,000
Provision for income taxes     10,885,000 1,929,000 2,059,000
Net (loss) income from discontinued operations, net of tax $ (15,868,000)   $ (77,414,000) $ (52,156,000) $ 22,931,000