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Restructuring and impairment charges - Charges recognized (Detail) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Oct. 01, 2023
Sep. 25, 2022
Oct. 01, 2023
Sep. 25, 2022
Restructuring Cost and Reserve [Line Items]        
Restructuring charges $ 231 $ 628 $ 3,960 $ 1,453
Asset impairment charges     0 1,497
Restructuring and impairment charges 231 628 3,960 2,950
Termination Benefits        
Restructuring Cost and Reserve [Line Items]        
Restructuring charges 77 300 3,208 502
Asset impairment charges       0
Restructuring and impairment charges       502
Other restructuring costs        
Restructuring Cost and Reserve [Line Items]        
Restructuring charges 154 328 752 951
Asset impairment charges       1,497
Restructuring and impairment charges       2,448
2023 Footprint Realignment Plan        
Restructuring Cost and Reserve [Line Items]        
Restructuring charges 1,296   1,296  
2023 Footprint Realignment Plan | Termination Benefits        
Restructuring Cost and Reserve [Line Items]        
Restructuring charges 1,296   1,296  
2023 Footprint Realignment Plan | Other restructuring costs        
Restructuring Cost and Reserve [Line Items]        
Restructuring charges 0   0  
2022 Restructuring Plan        
Restructuring Cost and Reserve [Line Items]        
Restructuring charges 346   3,674  
2022 Restructuring Plan | Termination Benefits        
Restructuring Cost and Reserve [Line Items]        
Restructuring charges 244   3,361  
2022 Restructuring Plan | Other restructuring costs        
Restructuring Cost and Reserve [Line Items]        
Restructuring charges 102   313  
Respiratory divestiture plan        
Restructuring Cost and Reserve [Line Items]        
Restructuring charges (846) 145 (579) 425
Respiratory divestiture plan | Termination Benefits        
Restructuring Cost and Reserve [Line Items]        
Restructuring charges (851) 123 (596) 358
Respiratory divestiture plan | Other restructuring costs        
Restructuring Cost and Reserve [Line Items]        
Restructuring charges 5 22 17 67
2019 Footprint realignment plan        
Restructuring Cost and Reserve [Line Items]        
Restructuring charges   (34)   (1,059)
2019 Footprint realignment plan | Termination Benefits        
Restructuring Cost and Reserve [Line Items]        
Restructuring charges   (50)   (1,120)
2019 Footprint realignment plan | Other restructuring costs        
Restructuring Cost and Reserve [Line Items]        
Restructuring charges   16   61
2018 Footprint realignment plan        
Restructuring Cost and Reserve [Line Items]        
Restructuring charges   455   1,061
2018 Footprint realignment plan | Termination Benefits        
Restructuring Cost and Reserve [Line Items]        
Restructuring charges   203   514
2018 Footprint realignment plan | Other restructuring costs        
Restructuring Cost and Reserve [Line Items]        
Restructuring charges   252   547
Other restructuring programs        
Restructuring Cost and Reserve [Line Items]        
Restructuring charges (565) 62 (431) 1,026
Other restructuring programs | Termination Benefits        
Restructuring Cost and Reserve [Line Items]        
Restructuring charges (612) 24 (853) 750
Other restructuring programs | Other restructuring costs        
Restructuring Cost and Reserve [Line Items]        
Restructuring charges $ 47 $ 38 $ 422 $ 276