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Revenue Recognition (Details) $ in Thousands	3 Months Ended
	Apr. 03, 2021 USD ($) day	Mar. 28, 2020 USD ($)
Disaggregation of Revenue [Line Items]
Standard terms of payment, number of days | day	10
Net sales	$ 1,025,469	$ 662,070
Warehouse and reload
Disaggregation of Revenue [Line Items]
Net sales	849,419	545,892
Direct
Disaggregation of Revenue [Line Items]
Net sales	191,130	125,582
Customer discounts and rebates
Disaggregation of Revenue [Line Items]
Net sales	(15,080)	(9,404)
Structural products
Disaggregation of Revenue [Line Items]
Net sales	462,409	240,722
Specialty products
Disaggregation of Revenue [Line Items]
Net sales	$ 563,060	$ 421,348

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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.

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