v3.26.3
Supplemental equity and other information - Schedule of Accumulated Other Comprehensive Loss, Net of Tax (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Accumulated Other Comprehensive Income (Loss), Net of Tax        
Beginning balance $ 153,262 $ 236,589 $ 154,612 $ 152,634
Other comprehensive (loss) income, net of tax (333) [1] (4,579) [1] (4,032) [2] 8,474 [2]
Ending balance 146,430 193,511 146,430 193,511
Amounts reclassified from accumulated other comprehensive income, tax impacts     154 49
Total        
Accumulated Other Comprehensive Income (Loss), Net of Tax        
Beginning balance (62,604) (43,111) (58,905) (56,164)
Other comprehensive income (loss) before reclassifications     (4,442) 8,328
Amounts reclassified from accumulated other comprehensive income     410 146
Other comprehensive (loss) income, net of tax (333) [1] (4,579) [1] (4,032) [2] 8,474 [2]
Ending balance (62,937) (47,690) (62,937) (47,690)
Pension and postretirement benefit plans        
Accumulated Other Comprehensive Income (Loss), Net of Tax        
Beginning balance     (74,007) (54,953)
Other comprehensive income (loss) before reclassifications     2,194 (7,528)
Amounts reclassified from accumulated other comprehensive income     410 146
Other comprehensive (loss) income, net of tax     2,604 (7,382)
Ending balance (71,403) (62,335) (71,403) (62,335)
Foreign currency translation        
Accumulated Other Comprehensive Income (Loss), Net of Tax        
Beginning balance     15,102 (1,211)
Other comprehensive income (loss) before reclassifications     (6,636) 15,856
Amounts reclassified from accumulated other comprehensive income     0 0
Other comprehensive (loss) income, net of tax     (6,636) 15,856
Ending balance $ 8,466 $ 14,645 $ 8,466 $ 14,645
[1] For the three months ended September 30, 2026 and 2025, net of an income tax provision of $45 thousand and $0.6 million, respectively.
[2] For the nine months ended September 30, 2026 and 2025, net of an income tax provision of $0.7 million and an income tax benefit of $1.6 million, respectively.