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Revenue Recognition (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 02, 2021 USD ($) day	Sep. 26, 2020 USD ($)	Oct. 02, 2021 USD ($) day	Sep. 26, 2020 USD ($)
Revenue from Contract with Customer [Abstract]
Standard terms of payment, number of days | day	10		10
Disaggregation of Revenue [Line Items]
Net sales	$ 970,842	$ 871,063	$ 3,304,224	$ 2,231,909
Warehouse and reload
Disaggregation of Revenue [Line Items]
Net sales	783,758	745,185	2,695,326	1,901,285
Direct
Disaggregation of Revenue [Line Items]
Net sales	204,524	138,750	660,934	363,250
Customer discounts and rebates
Disaggregation of Revenue [Line Items]
Net sales	(17,440)	(12,872)	(52,036)	(32,626)
Structural products
Disaggregation of Revenue [Line Items]
Net sales	329,818	375,072	1,425,389	865,302
Specialty products
Disaggregation of Revenue [Line Items]
Net sales	$ 641,024	$ 495,991	$ 1,878,835	$ 1,366,607

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Contract With Customer, Standard Terms Of Payment, Number Of Days

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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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