Acquisitions (Details Textual) - USD ($)	9 Months Ended
	Sep. 26, 2020	Sep. 28, 2019
Business Acquisition [Line Items]
Cash consideration to acquire businesses, net of cash acquired	$ 197,562,000	$ 338,000
Goodwill acquired during period	120,219,000
Goodwill expected tax deductible amount	0
2020 Acquisitions [Member]
Business Acquisition [Line Items]
Cash consideration to acquire businesses, net of cash acquired	195,600,000
Cash acquired from acquisition during period	1,500,000
Goodwill acquired during period	119,400,000
Finite-lived intangible assets acquired during period	101,300,000
Other identifiable assets acquired and liabilities assumed, net during period	$ (25,100,000)
Weighted-average useful life of definite-lived intangible assets acquired	8 years 10 months 24 days