Derivative Instruments and Hedging Activities (Fair value and classification of interest rate swaps) (Details) - Interest rate swap [Member] - Designated as hedging instrument [Member] - USD ($) $ in Thousands		Sep. 29, 2019	Dec. 30, 2018
Derivative [Line Items]
Derivative, interest rate swaps, liabilities, fair value	[1]	$ 27,976	$ 11,116
Other current assets, net [Member]
Derivative [Line Items]
Derivative, interest rate swaps, assets, fair value	[1]	0	765
Accrued and other current liabilities [Member]
Derivative [Line Items]
Derivative, interest rate swaps, liabilities, fair value		6,860	1,393
Other long-term liabilities, net [Member]
Derivative [Line Items]
Derivative, interest rate swaps, liabilities, fair value		$ 21,116	$ 9,723

[1] See Note 14 - Fair Value Measurements for fair value discussion of the interest rate swaps.