Summary of Financial Information for Reportable Segments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Oct. 01, 2016	Sep. 30, 2017	Oct. 01, 2016
Segment Reporting Information [Line Items]
Net sales	$ 345,591	$ 296,692	$ 991,970	$ 866,768
Total Segment Profit	95,513	65,806	267,741	205,272
Specialty Chemicals and Electronic Materials SCEM [Member]
Segment Reporting Information [Line Items]
Net sales	124,522	104,494	360,131	317,383
Total Segment Profit	34,647	18,811	96,961	70,141
Microcontamination Control [Member]
Segment Reporting Information [Line Items]
Net sales	116,113	94,738	320,575	263,941
Total Segment Profit	43,984	31,617	116,049	78,323
Advanced Materials Handling AMH [Member]
Segment Reporting Information [Line Items]
Net sales	104,956	97,460	311,264	285,444
Total Segment Profit	$ 16,882	$ 15,378	$ 54,731	$ 56,808