Changes in Accumulated Other Comprehensive Income by Component (Changes in AOCI by Component) (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 29, 2019	Sep. 23, 2018	Sep. 29, 2019	Sep. 23, 2018
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Other comprehensive income before reclassifications	$ 2,554	$ (5,276)	$ (5,128)	$ 5,990
Amounts reclassified from accumulated other comprehensive income		2,116		6,250
Reclassification of stranded tax effect				(391)
Reclassification from AOCI, tax		(249)		(845)
OCI before reclassifications, tax	478	(1,055)	(1,142)	1,247
Total [Member]
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance, beginning	13,600	11,076	21,282	(3,933)
Balance, ending	16,154	7,916	16,154	7,916
Foreign Currency Translation [Member]
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance, beginning	13,600	15,308	21,282	4,042
Other comprehensive income before reclassifications	2,554	(5,276)	(5,128)	5,990
Amounts reclassified from accumulated other comprehensive income		0		0
Reclassification of stranded tax effect				0
Balance, ending	16,154	10,032	16,154	10,032
Cash Flow Hedging Derivative Activity [Member]
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance, beginning		(4,232)		(7,975)
Other comprehensive income before reclassifications		0		0
Amounts reclassified from accumulated other comprehensive income		2,116		6,250
Reclassification of stranded tax effect				(391)
Balance, ending		$ (2,116)		$ (2,116)
Cash Flow Hedging Derivative Activity [Member]
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance, beginning	0		0
Other comprehensive income before reclassifications	0		0
Balance, ending	$ 0		$ 0

Amount after tax, before reclassification adjustments, of other comprehensive income (loss), attributable to parent.

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Amount of tax expense (benefit) allocated to other comprehensive income (loss) before reclassification adjustment from accumulated other comprehensive income (loss).

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Amount after tax of reclassification adjustments of other comprehensive income (loss) attributable to parent.

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Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

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