SEGMENT REPORTING (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 26, 2020	Sep. 28, 2019	Sep. 26, 2020	Sep. 28, 2019	Dec. 28, 2019
Segment Reporting
Net sales	$ 1,486,227	$ 1,163,026	$ 3,760,290	$ 3,417,969
Segment operating profit	106,601	70,467	257,591	193,150
Segment total assets	2,350,620	1,880,625	2,350,620	1,880,625	$ 1,889,477
Intersegment net sales
Segment Reporting
Net sales	(151,127)	(104,123)	(388,759)	(333,639)
Corporate
Segment Reporting
Net sales	(222)	648	(561)	(344)
Segment operating profit	(1,579)	10,435	10,555	19,592
Segment total assets	642,035		642,035		450,299
Retail
Segment Reporting
Net sales	700,522	397,140	1,661,873	1,212,330
Segment operating profit	62,181	14,297	122,082	47,597
Segment total assets	631,238		631,238		402,221
Retail \| Intersegment net sales
Segment Reporting
Net sales	45,416	32,400	109,378	101,203
Industrial
Segment Reporting
Net sales	282,124	271,667	763,046	837,671
Segment operating profit	22,037	20,768	53,837	60,208
Segment total assets	389,806		389,806		377,329
Industrial \| Intersegment net sales
Segment Reporting
Net sales	11,773	9,748	32,788	34,406
Construction
Segment Reporting
Net sales	447,103	445,505	1,187,429	1,225,467
Segment operating profit	16,513	21,406	50,544	56,263
Segment total assets	525,596		525,596		522,638
Construction \| Intersegment net sales
Segment Reporting
Net sales	17,909	16,057	49,685	42,393
All Other
Segment Reporting
Net sales	56,700	48,066	148,503	142,845
Segment operating profit	7,449	3,561	20,573	9,490
Segment total assets	161,945		161,945		$ 136,990
All Other \| Intersegment net sales
Segment Reporting
Net sales	$ 76,029	$ 45,918	$ 196,908	$ 155,637