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Derivative Financial Instruments (Narrative) (Details)	3 Months Ended
Derivative Financial Instruments (Narrative) (Details)	Mar. 29, 2020 USD ($) derivative_instrument	Mar. 31, 2019	Dec. 31, 2019 USD ($)
Derivative [Line Items]
Gross amount assets	$ 1,552,000		$ 152,000
Foreign currency forward contracts \| Derivatives Not Designated as Hedging Instruments
Derivative [Line Items]
Approximate number of derivatives per quarter \| derivative_instrument	10
Notional amount	$ 2,000,000.0
Foreign currency forward contracts \| Cash Flow Hedges
Derivative [Line Items]
Approximate number of derivatives per quarter \| derivative_instrument	10
Notional amount	$ 6,000,000.0
Estimated term of reclassification from OCI to Income	12 months	12 months
Offsetting derivative assets and liabilities
Derivative [Line Items]
Gross amount assets	$ 1,600,000
Gross amount liabilities	200,000
Net of offset assets	1,400,000
Net of offset liabilities	$ 0
Maximum \| Foreign currency forward contracts
Derivative [Line Items]
Term of derivative contracts	6 months
Maximum \| Foreign currency forward contracts \| Derivatives Not Designated as Hedging Instruments
Derivative [Line Items]
Term of derivative contracts	3 months
Maximum \| Foreign currency forward contracts \| Cash Flow Hedges
Derivative [Line Items]
Term of derivative contracts	6 months