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v3.25.2

Segment information - Differences Between Segment Profit and Amounts Included in Net Income (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |
Net sales | $ 40,366 | $ 35,887 | $ 80,638 | $ 73,858
Segment profit | 1,011 | 9,755 | 2,310 | 18,058
Corporate expenses | (3,519) | (4,290) | (6,240) | (6,649)
Equity in earnings (losses) of Kronos Worldwide, Inc. | (2,811) | 5,973 | 2,714 | 8,449
Interest and dividend income | 1,504 | 2,678 | 3,542 | 5,229
Marketable equity securities | (108) | 779 | (8,659) | 3,162
Other components of net periodic pension and OPEB cost | (285) | (318) | (570) | (636)
Interest expense | (90) | (148) | (666) | (293)
Income tax (expense) benefit | 43 | (1,302) | 66 | (2,290)
Net income | 1,054 | 8,453 | 2,376 | 15,768
Single reportable segment |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |
Net sales | 40,366 | 35,887 | 80,638 | 73,858
Segment profit | 6,320 | 5,081 | 12,189 | 8,796
Corporate expenses | (3,519) | (4,290) | (6,240) | (6,649)
Equity in earnings (losses) of Kronos Worldwide, Inc. | (2,811) | 5,973 | 2,714 | 8,449
Interest and dividend income | 1,504 | 2,678 | 3,542 | 5,229
Marketable equity securities | (108) | 779 | (8,659) | 3,162
Other components of net periodic pension and OPEB cost | (285) | (318) | (570) | (636)
Interest expense | (90) | (148) | (666) | (293)
Income tax (expense) benefit | 43 | (1,302) | 66 | (2,290)
Net income | $ 1,054 | $ 8,453 | $ 2,376 | $ 15,768

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