Goodwill Rollforward (Details) $ in Thousands	9 Months Ended
Sep. 26, 2020 USD ($)
Goodwill [Line Items]
Goodwill - Beginning	$ 695,044
Addition due to acquisitions	47,850
Purchase Accounting Adjustments	3,045
Foreign currency translation	(1,469)
Goodwill - End	744,470
Specialty Chemicals and Electronic Materials SCEM
Goodwill [Line Items]
Goodwill - Beginning	397,952
Addition due to acquisitions	31,751
Purchase Accounting Adjustments	1,276
Foreign currency translation	(3,275)
Goodwill - End	427,704
Microcontamination Control
Goodwill [Line Items]
Goodwill - Beginning	240,021
Addition due to acquisitions	0
Purchase Accounting Adjustments	1,769
Foreign currency translation	1,806
Goodwill - End	243,596
Advanced Materials Handling AMH
Goodwill [Line Items]
Goodwill - Beginning	57,071
Addition due to acquisitions	16,099
Purchase Accounting Adjustments	0
Foreign currency translation	0
Goodwill - End	$ 73,170

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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-Publisher FASB
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