Earnings per share (Details) $ / shares in Units, $ in Millions |
3 Months Ended | 6 Months Ended | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Jun. 29, 2025
USD ($)
$ / shares
shares
|
Mar. 30, 2025
USD ($)
|
Jun. 30, 2024
USD ($)
$ / shares
shares
|
Mar. 31, 2024
USD ($)
|
Jun. 29, 2025
USD ($)
$ / shares
shares
|
Jun. 30, 2024
USD ($)
$ / shares
shares
|
Jun. 29, 2025
£ / shares
|
Dec. 31, 2024
£ / shares
|
Jun. 30, 2024
£ / shares
|
|||||
| Basic earnings / (loss): | |||||||||||||
| Net income / (loss) from continuing operations | $ | $ 5.0 | $ (0.4) | $ 10.5 | $ 2.4 | |||||||||
| Net loss from discontinued operations | $ | (2.4) | (0.1) | (2.4) | (0.2) | |||||||||
| Net income / (loss) | $ | $ 2.6 | $ 5.5 | $ (0.5) | $ 2.7 | $ 8.1 | $ 2.2 | |||||||
| Common stock, par value (in GBP per share) | £ / shares | £ 0.50 | £ 0.50 | |||||||||||
| Weighted average number of £0.50 ordinary shares: | |||||||||||||
| For basic earnings per share (in shares) | shares | 26,749,018 | 26,831,372 | 26,741,271 | 26,826,123 | |||||||||
| Dilutive effect of potential common stock (in shares) | shares | 349,179 | 100,919 | 402,613 | 66,107 | |||||||||
| For diluted earnings per share (in shares) | shares | 27,098,197 | 26,932,291 | 27,143,884 | 26,892,230 | |||||||||
| (Loss) / earnings per share using weighted average number of ordinary shares outstanding | |||||||||||||
| Basic (loss) / earnings per ordinary share for continuing operations (usd per share) | [1] | $ 0.19 | $ (0.01) | $ 0.39 | $ 0.09 | ||||||||
| Basic earnings /(loss) per ordinary share for discontinued operations (usd per share) | [1],[2] | (0.09) | (0.01) | (0.09) | (0.01) | ||||||||
| Basic (usd per share) | [1] | 0.10 | (0.02) | 0.30 | 0.08 | ||||||||
| Diluted (loss) / earnings per ordinary share for continuing operations (usd per share) | [1] | 0.18 | (0.01) | 0.39 | 0.09 | ||||||||
| Diluted earnings / (loss) per ordinary share for discontinued operations (usd per share) | [1],[2] | (0.09) | 0 | (0.09) | (0.01) | ||||||||
| Diluted (usd per share) | [1] | $ 0.10 | $ (0.02) | $ 0.30 | $ 0.08 | ||||||||
| Ordinary shares | |||||||||||||
| Basic earnings / (loss): | |||||||||||||
| Common stock, par value (in GBP per share) | £ / shares | £ 0.50 | £ 0.50 | |||||||||||
| |||||||||||||
| X | ||||||||||
- Definition Face amount or stated value per share of common stock. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount after tax of income (loss) from continuing operations attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition The amount of net income (loss) from continuing operations per each share of common stock or unit outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition The amount of net income (loss) derived from continuing operations during the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount after tax of income (loss) from a discontinued operation attributable to the parent. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Per basic share amount, after tax, of income (loss) from the day-to-day business activities of the discontinued operation and gain (loss) from the disposal of the discontinued operation. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Per diluted share amount, after tax, of income (loss) from the day-to-day business activities of the discontinued operation and gain (loss) from the disposal of the discontinued operation. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition The sum of dilutive potential common shares or units used in the calculation of the diluted per-share or per-unit computation. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Details
|