Goodwill Rollforward (Details) $ in Thousands	9 Months Ended
Oct. 02, 2021 USD ($)
Goodwill [Line Items]
Goodwill - Beginning	$ 748,037
Addition due to acquisitions	932
Foreign currency translation	964
Goodwill - End	749,933
Specialty Chemicals and Electronic Materials SCEM
Goodwill [Line Items]
Goodwill - Beginning	427,713
Addition due to acquisitions	0
Foreign currency translation	357
Goodwill - End	428,070
Microcontamination Control MC
Goodwill [Line Items]
Goodwill - Beginning	247,154
Addition due to acquisitions	0
Foreign currency translation	607
Goodwill - End	247,761
Advanced Materials Handling AMH
Goodwill [Line Items]
Goodwill - Beginning	73,170
Addition due to acquisitions	932
Foreign currency translation	0
Goodwill - End	$ 74,102

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

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