Significant Accounting Policies (Schedule of Finite-Lived Intangible Assets) (Details)	12 Months Ended
	Dec. 28, 2019
Customer relationships [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset Useful Life	10 years
Customer relationships [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset Useful Life	25 years
Patents And Trademarks [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset Useful Life	15 years
Other [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset Useful Life	5 years
Other [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset Useful Life	15 years