Revenue Recognition - Revenue Disaggregated by Geography (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 28, 2020	Jun. 30, 2019	Jun. 28, 2020	Jun. 30, 2019
Disaggregation of Revenue [Line Items]
Revenue	$ 169,097	$ 199,047	$ 336,332	$ 372,531
Americas
Disaggregation of Revenue [Line Items]
Revenue	68,966	77,408	129,214	142,178
Europe
Disaggregation of Revenue [Line Items]
Revenue	35,987	59,620	84,569	119,158
Greater China
Disaggregation of Revenue [Line Items]
Revenue	31,898	35,816	58,301	58,632
Other Asia
Disaggregation of Revenue [Line Items]
Revenue	$ 32,246	$ 26,203	$ 64,248	$ 52,563

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.

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+ Details