Goodwill Rollforward (Details) $ in Thousands	3 Months Ended
Mar. 28, 2020 USD ($)
Goodwill [Line Items]
Goodwill - Beginning	$ 695,044
Addition due to acquisitions	31,751
Purchase Accounting Adjustments	3,069
Foreign currency translation	(3,630)
Goodwill - End	726,234
Specialty Chemicals and Electronic Materials SCEM
Goodwill [Line Items]
Goodwill - Beginning	397,952
Addition due to acquisitions	31,751
Purchase Accounting Adjustments	1,172
Foreign currency translation	(2,526)
Goodwill - End	428,349
Microcontamination Control
Goodwill [Line Items]
Goodwill - Beginning	240,021
Addition due to acquisitions	0
Purchase Accounting Adjustments	1,897
Foreign currency translation	(1,104)
Goodwill - End	240,814
Advanced Materials Handling AMH
Goodwill [Line Items]
Goodwill - Beginning	57,071
Addition due to acquisitions	0
Purchase Accounting Adjustments	0
Foreign currency translation	0
Goodwill - End	$ 57,071

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.

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