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Commitments and Contingencies (Foreign Currency Contracts) (Details) $ in Thousands	12 Months Ended
	Dec. 28, 2018 USD ($)	Dec. 29, 2017 USD ($)	Dec. 30, 2016 USD ($)
Foreign Currency Cash Flow Hedges [Abstract]
Increase (decrease) in sales	$ (758)	$ 1,327	$ 0
Increase (decrease) in cost of sales	(944)	84	3,516
Ineffective portion of change in fair value	$ 0	$ 0	$ 0
Derivative [Line Items]
Description of Types of Foreign Currency Cash Flow Hedging Instruments Used	The Company periodically enters into foreign currency forward contracts to hedge its exposure to foreign currency exchange rate fluctuations in its international operations
Terminated FX Contract [Member]
Derivative [Line Items]
Loss on termination of foreign currency contract	$ (700)
FX Contract 1 [Member]
Derivative [Line Items]
Notional Amount	$ 12,621
Start Date	Jan. 02, 2019
End Date	Jun. 28, 2019
$/Foreign Currency	1.1686
FX Contract 2 [Member]
Derivative [Line Items]
Notional Amount	$ 10,991
Start Date	Jan. 02, 2019
End Date	Jun. 28, 2019
$/Foreign Currency	0.0523
FX Contract 3 [Member]
Derivative [Line Items]
Notional Amount	$ 10,535
Start Date	Jan. 02, 2019
End Date	Jun. 28, 2019
$/Foreign Currency	1.1705
FX Contract 4 [Member]
Derivative [Line Items]
Notional Amount	$ 11,019
Start Date	Jan. 02, 2019
End Date	Jun. 28, 2019
$/Foreign Currency	0.0483
FX Contract 5 [Member]
Derivative [Line Items]
Notional Amount	$ 10,499
Start Date	Jul. 01, 2019
End Date	Dec. 31, 2019
$/Foreign Currency	0.0500
Accrued Expenses [Member] | FX Contract 1 [Member]
Derivative [Line Items]
Fair Value	$ (149)
Accrued Expenses [Member] | FX Contract 2 [Member]
Derivative [Line Items]
Fair Value	(494)
Accrued Expenses [Member] | FX Contract 3 [Member]
Derivative [Line Items]
Fair Value	(141)
Accrued Expenses [Member] | FX Contract 4 [Member]
Derivative [Line Items]
Fair Value	(316)
Accrued Expenses [Member] | FX Contract 5 [Member]
Derivative [Line Items]
Fair Value	$ 368

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Increase (Decrease) In Foreign Currency Contract Sales

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Fair value as of the balance sheet date of all foreign currency derivatives designated as cash flow hedging instruments.

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