Financial Instruments - Offsetting of Foreign Currency Derivative Contracts (Details) - Foreign currency exchange contract [Member] - USD ($) $ in Thousands	Mar. 30, 2019	Dec. 31, 2018
Offsetting Liabilities [Line Items]
Gross Assets Recognized	$ 28	$ 549
Gross Amounts Offset in the Condensed Consolidated Balance Sheets	0	0
Net Amounts Presented in Condensed Consolidated Balance Sheets	28	549
Gross Amounts Not Offset in Condensed Consolidated Balance Sheets, Financial Instruments	28	549
Gross Amounts Not Offset in Condensed Consolidated Balance Sheets, Cash Collateral Pledged	0	0
Net Amount	0	0
Offsetting Assets [Line Items]
Gross Amounts of Recognized Assets	464	623
Gross Amounts Offset in the Condensed Consolidated Balance Sheets	0	0
Net Amounts Presented in Condensed Consolidated Balance Sheets	464	623
Gross Amounts Not Offset in Condensed Consolidated Balance Sheets, Financial Instruments	28	549
Gross Amounts Not Offset in Condensed Consolidated Balance Sheets, Cash Collateral Received	0	0
Net Amount	$ 436	$ 74

Fair value of liability associated with financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset.

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