Foreign Currency Contracts - Additional Information (Details) - Foreign Currency Forward Contracts $ in Millions	3 Months Ended	9 Months Ended
Sep. 28, 2018 USD ($)	Sep. 28, 2018 USD ($)	Dec. 31, 2017 USD ($)	Sep. 29, 2017 Contract
Derivative [Line Items]
Aggregate notional amount of foreign currency forward contracts	$ 30.1	$ 30.1	$ 17.9
Fair value of foreign currency forward contracts	0.1	0.1	$ 0.2
Number of open foreign currency contracts \| Contract				0
Foreign Exchange Transaction Gains (Losses)
Derivative [Line Items]
Net gain (loss) on foreign currency forward contracts	$ (0.2)	$ 0.7

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Fair value as of the balance sheet date of all foreign currency derivative assets not designated as hedging instruments.

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Amount of gain (loss) recognized in earnings in the period from the increase (decrease) in fair value of foreign currency derivatives not designated as hedging instruments.

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Number of foreign currency exchange rate derivatives held by the entity at the reporting date.

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