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Revenues - Revenues Disaggregated by Geographic Region (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 03, 2020	Jun. 28, 2019	Jul. 03, 2020	Jun. 28, 2019
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	$ 259,479	$ 240,275	$ 486,394	$ 455,762
U.S.
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	181,231	196,347	377,827	378,473
Europe
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	52,917	22,249	81,953	44,117
Japan
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	$ 25,331	$ 21,679	$ 26,614	$ 33,172

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No definition available.

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

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