Restructuring charges, separation costs and impairment charges - Charges recognized (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2025	Jun. 30, 2024	Jun. 29, 2025	Jun. 30, 2024
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 1,165	$ 7,855	$ 2,693	$ 8,404
Asset impairment charges	8,117		8,117	2,110
Separation costs	12,890		16,117
Restructuring charges, separation costs and impairment charges	22,172		26,927	10,514
Termination Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges	1,085	7,813	2,514	8,289
Asset impairment charges	0		0	0
Separation costs	0		0
Restructuring charges, separation costs and impairment charges	1,085		2,514	8,289
Other costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	80	42	179	115
Asset impairment charges	8,117		8,117	2,110
Separation costs	12,890		16,117
Restructuring charges, separation costs and impairment charges	21,087		24,413	2,225
[2024 Restructuring plan]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	49		221
[2024 Restructuring plan] | Termination Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges	40		161
[2024 Restructuring plan] | Other costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	9		60
2024 Footprint realignment plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges	1,156	8,572	2,258	8,572
2024 Footprint realignment plan | Termination Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges	1,101	8,572	2,166	8,572
2024 Footprint realignment plan | Other costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	55	0	92	0
2023 Restructuring plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges		(938)		(736)
2023 Restructuring plan | Termination Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges		(974)		(818)
2023 Restructuring plan | Other costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges		36		82
2023 Footprint realignment plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges	87	589	332	746
2023 Footprint realignment plan | Termination Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges	87	588	330	743
2023 Footprint realignment plan | Other costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0	1	2	3
Other restructuring programs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	(127)	(368)	(118)	(178)
Other restructuring programs | Termination Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges	(143)	(373)	(143)	(208)
Other restructuring programs | Other costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 16	$ 5	$ 25	$ 30