Summary of Financial Information for Reportable Segments (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jul. 01, 2017	Jun. 30, 2018	Jul. 01, 2017
Segment Reporting Information [Line Items]
Net Sales	$ 383,059	$ 329,002	$ 750,258	$ 646,379
Total Segment Profit	99,484	76,025	196,179	144,100
Specialty Chemicals and Electronic Materials SCEM [Member]
Segment Reporting Information [Line Items]
Net Sales	134,336	121,174	265,079	235,609
Total Segment Profit	37,316	29,060	68,878	52,188
Microcontamination Control [Member]
Segment Reporting Information [Line Items]
Net Sales	124,681	104,407	243,318	204,462
Total Segment Profit	39,054	31,796	81,045	62,783
Advanced Materials Handling AMH [Member]
Segment Reporting Information [Line Items]
Net Sales	124,042	103,421	241,861	206,308
Total Segment Profit	23,114	15,169	46,256	29,129
TAIWAN, PROVINCE OF CHINA
Segment Reporting Information [Line Items]
Net Sales	67,427	76,376	132,518	154,508
TAIWAN, PROVINCE OF CHINA | Specialty Chemicals and Electronic Materials SCEM [Member]
Segment Reporting Information [Line Items]
Net Sales	26,575	28,018	54,217	55,465
TAIWAN, PROVINCE OF CHINA | Microcontamination Control [Member]
Segment Reporting Information [Line Items]
Net Sales	23,572	28,912	46,104	61,106
TAIWAN, PROVINCE OF CHINA | Advanced Materials Handling AMH [Member]
Segment Reporting Information [Line Items]
Net Sales	17,280	19,446	32,197	37,937
UNITED STATES
Segment Reporting Information [Line Items]
Net Sales	83,866	70,947	170,131	136,736
UNITED STATES | Specialty Chemicals and Electronic Materials SCEM [Member]
Segment Reporting Information [Line Items]
Net Sales	34,128	28,766	66,529	57,384
UNITED STATES | Microcontamination Control [Member]
Segment Reporting Information [Line Items]
Net Sales	20,272	17,216	41,047	32,486
UNITED STATES | Advanced Materials Handling AMH [Member]
Segment Reporting Information [Line Items]
Net Sales	29,466	24,965	62,555	46,866
KOREA, REPUBLIC OF
Segment Reporting Information [Line Items]
Net Sales	64,734	51,998	127,472	99,321
KOREA, REPUBLIC OF | Specialty Chemicals and Electronic Materials SCEM [Member]
Segment Reporting Information [Line Items]
Net Sales	20,791	18,507	41,118	36,288
KOREA, REPUBLIC OF | Microcontamination Control [Member]
Segment Reporting Information [Line Items]
Net Sales	19,982	15,043	39,805	28,387
KOREA, REPUBLIC OF | Advanced Materials Handling AMH [Member]
Segment Reporting Information [Line Items]
Net Sales	23,961	18,448	46,549	34,646
JAPAN
Segment Reporting Information [Line Items]
Net Sales	54,684	40,692	106,214	76,136
JAPAN | Specialty Chemicals and Electronic Materials SCEM [Member]
Segment Reporting Information [Line Items]
Net Sales	14,060	10,602	28,566	18,594
JAPAN | Microcontamination Control [Member]
Segment Reporting Information [Line Items]
Net Sales	28,545	21,132	54,537	39,264
JAPAN | Advanced Materials Handling AMH [Member]
Segment Reporting Information [Line Items]
Net Sales	12,079	8,958	23,111	18,278
CHINA
Segment Reporting Information [Line Items]
Net Sales	46,798	34,504	87,293	63,689
CHINA | Specialty Chemicals and Electronic Materials SCEM [Member]
Segment Reporting Information [Line Items]
Net Sales	16,726	17,735	31,706	31,154
CHINA | Microcontamination Control [Member]
Segment Reporting Information [Line Items]
Net Sales	15,753	9,786	29,057	17,955
CHINA | Advanced Materials Handling AMH [Member]
Segment Reporting Information [Line Items]
Net Sales	14,319	6,983	26,530	14,580
Europe [Member]
Segment Reporting Information [Line Items]
Net Sales	35,929	28,782	68,816	59,729
Europe [Member] | Specialty Chemicals and Electronic Materials SCEM [Member]
Segment Reporting Information [Line Items]
Net Sales	7,970	7,316	15,766	15,328
Europe [Member] | Microcontamination Control [Member]
Segment Reporting Information [Line Items]
Net Sales	10,406	6,391	20,090	13,764
Europe [Member] | Advanced Materials Handling AMH [Member]
Segment Reporting Information [Line Items]
Net Sales	17,553	15,075	32,960	30,637
Southeast Asia [Member]
Segment Reporting Information [Line Items]
Net Sales	29,621	25,703	57,814	56,260
Southeast Asia [Member] | Specialty Chemicals and Electronic Materials SCEM [Member]
Segment Reporting Information [Line Items]
Net Sales	14,086	10,230	27,177	21,396
Southeast Asia [Member] | Microcontamination Control [Member]
Segment Reporting Information [Line Items]
Net Sales	6,151	5,927	12,678	11,500
Southeast Asia [Member] | Advanced Materials Handling AMH [Member]
Segment Reporting Information [Line Items]
Net Sales	$ 9,384	$ 9,546	$ 17,959	$ 23,364