Acquisitions (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Oct. 03, 2020	Oct. 03, 2020	Sep. 28, 2019
Business Acquisition, Equity Interests Issued or Issuable [Line Items]
Acquisition of business, net of cash acquired		$ 25,852	$ 11,862
Applied Thin-Film Products [Member]
Business Acquisition, Equity Interests Issued or Issuable [Line Items]
Business acquisition, effective date of acquisition	Oct. 01, 2020
Business acquisition, name of acquired entity	Applied Thin-Film Products
Acquisition of business, net of cash acquired	$ 25,852
Definite-lived intangible assets	10,800
Goodwill related to acquisitions	6,309
Remaining acquisition price to be paid	$ 350	$ 350