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

REVENUE RECOGNITION (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
REVENUE RECOGNITION (Details) - USD ($) $ in Thousands	Sep. 26, 2021	Sep. 27, 2020	Sep. 26, 2021	Sep. 27, 2020
Disaggregation of Revenue [Line Items]
Total sales	$ 1,060,177	$ 700,707	$ 2,930,613	$ 1,713,984
Recreational Vehicle
Disaggregation of Revenue [Line Items]
Total sales	633,237	421,171	1,730,094	945,517
Marine
Disaggregation of Revenue [Line Items]
Total sales	173,026	93,451	476,328	230,550
Manufactured Housing
Disaggregation of Revenue [Line Items]
Total sales	134,625	107,753	394,434	310,436
Industrial
Disaggregation of Revenue [Line Items]
Total sales	119,289	78,332	329,757	227,481
Manufacturing
Disaggregation of Revenue [Line Items]
Total sales	772,235	494,274	2,102,032	1,206,114
Manufacturing \| Recreational Vehicle
Disaggregation of Revenue [Line Items]
Total sales	434,029	290,326	1,161,254	656,739
Manufacturing \| Marine
Disaggregation of Revenue [Line Items]
Total sales	164,535	88,861	453,223	219,150
Manufacturing \| Manufactured Housing
Disaggregation of Revenue [Line Items]
Total sales	65,785	45,845	190,786	127,857
Manufacturing \| Industrial
Disaggregation of Revenue [Line Items]
Total sales	107,886	69,242	296,769	202,368
Distribution
Disaggregation of Revenue [Line Items]
Total sales	287,942	206,433	828,581	507,870
Distribution \| Recreational Vehicle
Disaggregation of Revenue [Line Items]
Total sales	199,208	130,845	568,840	288,778
Distribution \| Marine
Disaggregation of Revenue [Line Items]
Total sales	8,491	4,590	23,105	11,400
Distribution \| Manufactured Housing
Disaggregation of Revenue [Line Items]
Total sales	68,840	61,908	203,648	182,579
Distribution \| Industrial
Disaggregation of Revenue [Line Items]
Total sales	$ 11,403	$ 9,090	$ 32,988	$ 25,113