Derivatives (Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance) (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 28, 2020	Mar. 30, 2019
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized loss on interest rate swaps		$ (1,137)	$ (399)
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized loss on interest rate swaps		(1,137)	(399)
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Interest Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Reclassified from AOCIL on the effective portion into Income	[1],[2]	208	$ (56)
Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net		$ 1,485

[1] The amount of gain (loss) reclassified from AOCIL is included in interest expense on the Company's consolidated condensed financial statements.

[2] The amount of loss expected to be reclassified from AOCIL into earnings during the next 12 months subsequent to March 28, 2020 is $1,485.