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		Mar. 29, 2020	Dec. 29, 2019
Derivative [Line Items]
Derivative, interest rate swaps, liabilities, fair value	[1]	$ 40,093	$ 24,009
Accrued and other current liabilities [Member]
Derivative [Line Items]
Derivative, interest rate swaps, liabilities, fair value		13,335	7,174
Interest payable		679	632
Other long-term liabilities, net [Member]
Derivative [Line Items]
Derivative, interest rate swaps, liabilities, fair value		$ 26,758	$ 16,835

[1] See Note 15 - Fair Value Measurements for fair value discussion of the interest rate swaps.