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Discontinued operations - Income Statement (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2024 | Sep. 29, 2024 | Jun. 30, 2024 | Mar. 31, 2024 | Dec. 31, 2023 | Oct. 01, 2023 | Jul. 02, 2023 | Apr. 02, 2023 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Disposal Group, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net income from discontinued operations | $ 13,256 | $ 19,817 | $ 33,541 | $ 29,761 | $ 20,724 | $ 19,112 | $ 30,111 | $ 26,310 | $ 96,375 | $ 96,257 | $ 88,570
Net income from discontinued operations attributable to noncontrolling interests |  |  |  |  |  |  |  |  | $ (171) | $ (174) | $ (259)
Weighted average common shares outstanding: |  |  |  |  |  |  |  |  |  |  |
Basic (in shares) | 98,700 | 98,683 | 98,671 | 98,498 | 98,349 | 98,337 | 98,325 | 98,167 | 98,637 | 98,294 | 97,991
Diluted (in shares) | 98,700 | 99,267 | 99,241 | 99,159 | 99,164 | 98,912 | 98,872 | 98,615 | 99,290 | 98,890 | 98,732
Net income attributable to discontinued operations: |  |  |  |  |  |  |  |  |  |  |
Basic (usd per share) | $ 0.13 | $ 0.20 | $ 0.34 | $ 0.30 | $ 0.21 | $ 0.19 | $ 0.31 | $ 0.27 | $ 0.97 | $ 0.98 | $ 0.90
Diluted (usd per share) | $ 0.13 | $ 0.20 | $ 0.34 | $ 0.30 | $ 0.21 | $ 0.19 | $ 0.30 | $ 0.27 | $ 0.97 | $ 0.97 | $ 0.89
Discontinued Operations, Held-for-Sale |  |  |  |  |  |  |  |  |  |  |
Disposal Group, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | $ 1,291,461 | $ 1,339,866 | $ 1,391,225
Cost of sales |  |  |  |  |  |  |  |  | 1,037,196 | 1,106,970 | 1,176,894
Gross profit |  |  |  |  |  |  |  |  | 254,265 | 232,896 | 214,331
Selling, general and administrative expenses |  |  |  |  |  |  |  |  | 122,488 | 97,131 | 97,762
Restructuring/Asset impairment charges |  |  |  |  |  |  |  |  | 3,740 | 9,024 | 4,525
Operating profit |  |  |  |  |  |  |  |  | 128,037 | 126,741 | 112,044
Interest expense |  |  |  |  |  |  |  |  | 13,396 | 1,293 | 790
Interest income |  |  |  |  |  |  |  |  | 1,668 | 357 | 94
Income from discontinued operations before income taxes |  |  |  |  |  |  |  |  | 116,309 | 125,805 | 111,348
Provision for income taxes |  |  |  |  |  |  |  |  | 19,934 | 29,548 | 22,778
Net income from discontinued operations |  |  |  |  |  |  |  |  | 96,375 | 96,257 | 88,570
Net income from discontinued operations attributable to noncontrolling interests |  |  |  |  |  |  |  |  | (171) | (174) | (259)
Net income attributable to discontinued operations |  |  |  |  |  |  |  |  | $ 96,204 | $ 96,083 | $ 88,311
Weighted average common shares outstanding: |  |  |  |  |  |  |  |  |  |  |
Basic (in shares) |  |  |  |  |  |  |  |  | 98,637 | 98,294 | 97,991
Diluted (in shares) |  |  |  |  |  |  |  |  | 99,290 | 98,890 | 98,732
Net income attributable to discontinued operations: |  |  |  |  |  |  |  |  |  |  |
Basic (usd per share) |  |  |  |  |  |  |  |  | $ 0.97 | $ 0.98 | $ 0.90
Diluted (usd per share) |  |  |  |  |  |  |  |  | $ 0.97 | $ 0.97 | $ 0.89
Discontinued Operations, Held-for-Sale | Thermoformed and Flexible Packaging business and its Global Trident business |  |  |  |  |  |  |  |  |  |  |
Disposal Group, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Interest expense |  |  |  |  |  |  |  |  | $ 9,528 |  |

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