Revenue Recognition - Revenue Disaggregated by Products and Services (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 27, 2020	Sep. 29, 2019	Sep. 27, 2020	Sep. 29, 2019
Revenue from External Customer [Line Items]
Revenue	$ 251,073	$ 183,325	$ 587,405	$ 555,856
Standard Products and Services
Revenue from External Customer [Line Items]
Revenue	174,797	139,887	486,458	473,610
Application-Specific Customer Solutions
Revenue from External Customer [Line Items]
Revenue	$ 76,276	$ 43,438	$ 100,947	$ 82,246

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.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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+ Details