Summary of Financial Information for Reportable Segments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 29, 2018	Sep. 30, 2017	Sep. 29, 2018	Sep. 30, 2017
Segment Reporting Information [Line Items]
Net Sales	$ 398,597	$ 345,591	$ 1,148,855	$ 991,970
Total Segment Profit	95,884	81,324	292,063	225,424
Specialty Chemicals and Electronic Materials SCEM [Member]
Segment Reporting Information [Line Items]
Net Sales	131,234	124,522	396,313	360,131
Total Segment Profit	31,860	29,539	100,738	81,727
Microcontamination Control [Member]
Segment Reporting Information [Line Items]
Net Sales	151,345	116,113	394,663	320,575
Total Segment Profit	44,530	39,302	125,575	102,085
Advanced Materials Handling AMH [Member]
Segment Reporting Information [Line Items]
Net Sales	116,018	104,956	357,879	311,264
Total Segment Profit	19,494	12,483	65,750	41,612
TAIWAN, PROVINCE OF CHINA
Segment Reporting Information [Line Items]
Net Sales	78,633	68,635	211,151	223,143
TAIWAN, PROVINCE OF CHINA | Specialty Chemicals and Electronic Materials SCEM [Member]
Segment Reporting Information [Line Items]
Net Sales	25,436	28,417	79,653	83,882
TAIWAN, PROVINCE OF CHINA | Microcontamination Control [Member]
Segment Reporting Information [Line Items]
Net Sales	34,452	24,439	80,556	85,545
TAIWAN, PROVINCE OF CHINA | Advanced Materials Handling AMH [Member]
Segment Reporting Information [Line Items]
Net Sales	18,745	15,779	50,942	53,716
UNITED STATES
Segment Reporting Information [Line Items]
Net Sales	85,622	75,613	255,753	212,349
UNITED STATES | Specialty Chemicals and Electronic Materials SCEM [Member]
Segment Reporting Information [Line Items]
Net Sales	33,014	29,213	99,543	86,597
UNITED STATES | Microcontamination Control [Member]
Segment Reporting Information [Line Items]
Net Sales	24,072	21,068	65,119	53,554
UNITED STATES | Advanced Materials Handling AMH [Member]
Segment Reporting Information [Line Items]
Net Sales	28,536	25,332	91,091	72,198
KOREA, REPUBLIC OF
Segment Reporting Information [Line Items]
Net Sales	59,839	58,659	187,311	157,980
KOREA, REPUBLIC OF | Specialty Chemicals and Electronic Materials SCEM [Member]
Segment Reporting Information [Line Items]
Net Sales	21,088	20,474	62,206	56,762
KOREA, REPUBLIC OF | Microcontamination Control [Member]
Segment Reporting Information [Line Items]
Net Sales	18,893	17,769	58,698	46,156
KOREA, REPUBLIC OF | Advanced Materials Handling AMH [Member]
Segment Reporting Information [Line Items]
Net Sales	19,858	20,416	66,407	55,062
JAPAN
Segment Reporting Information [Line Items]
Net Sales	51,669	43,708	157,883	119,844
JAPAN | Specialty Chemicals and Electronic Materials SCEM [Member]
Segment Reporting Information [Line Items]
Net Sales	12,141	10,388	40,707	28,982
JAPAN | Microcontamination Control [Member]
Segment Reporting Information [Line Items]
Net Sales	27,479	24,031	82,016	63,295
JAPAN | Advanced Materials Handling AMH [Member]
Segment Reporting Information [Line Items]
Net Sales	12,049	9,289	35,160	27,567
CHINA
Segment Reporting Information [Line Items]
Net Sales	58,290	42,695	145,583	106,384
CHINA | Specialty Chemicals and Electronic Materials SCEM [Member]
Segment Reporting Information [Line Items]
Net Sales	18,667	17,662	50,373	48,816
CHINA | Microcontamination Control [Member]
Segment Reporting Information [Line Items]
Net Sales	27,360	13,862	56,417	31,817
CHINA | Advanced Materials Handling AMH [Member]
Segment Reporting Information [Line Items]
Net Sales	12,263	11,171	38,793	25,751
Europe [Member]
Segment Reporting Information [Line Items]
Net Sales	35,351	29,238	104,167	88,967
Europe [Member] | Specialty Chemicals and Electronic Materials SCEM [Member]
Segment Reporting Information [Line Items]
Net Sales	7,579	7,509	23,345	22,837
Europe [Member] | Microcontamination Control [Member]
Segment Reporting Information [Line Items]
Net Sales	10,873	8,599	30,963	22,363
Europe [Member] | Advanced Materials Handling AMH [Member]
Segment Reporting Information [Line Items]
Net Sales	16,899	13,130	49,859	43,767
Southeast Asia [Member]
Segment Reporting Information [Line Items]
Net Sales	29,193	27,043	87,007	83,303
Southeast Asia [Member] | Specialty Chemicals and Electronic Materials SCEM [Member]
Segment Reporting Information [Line Items]
Net Sales	13,309	10,859	40,486	32,255
Southeast Asia [Member] | Microcontamination Control [Member]
Segment Reporting Information [Line Items]
Net Sales	8,216	6,345	20,894	17,845
Southeast Asia [Member] | Advanced Materials Handling AMH [Member]
Segment Reporting Information [Line Items]
Net Sales	$ 7,668	$ 9,839	$ 25,627	$ 33,203