Income taxes - Component of Income Taxes (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Amount | ||||
| Expected tax expense, at U.S. federal statutory income tax rate of 21% | $ 2,594 | $ 212 | $ 3,973 | $ 485 |
| Rate differences on equity in earnings (losses) of Kronos, net of dividends | (247) | (275) | (272) | (594) |
| U.S. state income taxes and other, net | 115 | 20 | 233 | 43 |
| Income tax expense (benefit) | $ 2,462 | $ (43) | $ 3,934 | $ (66) |
| Tax Jurisdiction of Domicile [Extensible Enumeration] | country:US | country:US | country:US | country:US |
| Percentage | ||||
| U.S. federal statutory income tax rate (in %) | 21.00% | 21.00% | 21.00% | 21.00% |
| X | ||||||||||
- Definition Income tax reconciliation state income taxes and other net. No definition available.
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Percentage of domestic federal statutory tax rate applicable to pretax income (loss). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to equity in earnings (loss) of unconsolidated subsidiaries exempt from income taxes. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Indicates tax jurisdiction of domicile. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|