Restructuring and impairment charges - Charges recognized (Detail) - USD ($) $ in Thousands	3 Months Ended
Apr. 02, 2023	Mar. 27, 2022
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 2,221	$ 908
Asset impairment charges	0	1,497
Restructuring and impairment charges	2,221	2,405
Termination Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges	1,947	726
Asset impairment charges		0
Restructuring and impairment charges		726
Other restructuring costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	274	182
Asset impairment charges		1,497
Restructuring and impairment charges		1,679
2022 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges	2,206
2022 Restructuring Plan \| Termination Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges	2,133
2022 Restructuring Plan \| Other restructuring costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	73
Respiratory divestiture plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges	140	120
Respiratory divestiture plan \| Termination Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges	128	106
Respiratory divestiture plan \| Other restructuring costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	12	14
2019 Footprint realignment plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges		(646)
2019 Footprint realignment plan \| Termination Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges		(670)
2019 Footprint realignment plan \| Other restructuring costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges		24
2018 Footprint realignment plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges		220
2018 Footprint realignment plan \| Termination Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges		158
2018 Footprint realignment plan \| Other restructuring costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges		62
Other restructuring programs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	(125)	1,214
Other restructuring programs \| Termination Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges	(314)	1,132
Other restructuring programs \| Other restructuring costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 189	$ 82

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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Amount of restructuring charges, remediation cost, and asset impairment loss.

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