Investment in Kronos Worldwide, Inc. - Changes in Carrying Value of Investment (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
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| Schedule Of Equity Method Investments [Line Items] | ||||
| Balance at the beginning of the period | $ 250,278 | |||
| Equity in earnings of Kronos | $ (2,811) | $ 5,973 | 2,714 | $ 8,449 |
| Dividends received from Kronos | (3,522) | $ (13,384) | ||
| Equity in Kronos' other comprehensive income (loss): | ||||
| Balance at the end of the period | 259,405 | 259,405 | ||
| Kronos | ||||
| Schedule Of Equity Method Investments [Line Items] | ||||
| Balance at the beginning of the period | 250,300 | |||
| Equity in earnings of Kronos | 2,700 | |||
| Dividends received from Kronos | (3,500) | |||
| Equity in Kronos' other comprehensive income (loss): | ||||
| Currency translation | 9,600 | |||
| Balance at the end of the period | $ 259,400 | 259,400 | ||
| Kronos | Defined Benefit Pension Plans | ||||
| Equity in Kronos' other comprehensive income (loss): | ||||
| Defined benefit pension plans | $ 300 | |||
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- Definition Amount of distribution received from equity method investee for return on investment, classified as operating activities. Excludes distribution for return of investment, classified as investing activities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of income (loss) for proportionate share of equity method investee's income (loss). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount before tax, after reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount, before tax, after reclassification adjustment, of (increase) decrease in accumulated other comprehensive income for defined benefit plan. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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