v3.21.2
SEGMENT INFORMATION - Sales and Operating Income of Segments (Details)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 26, 2021
USD ($)
Sep. 27, 2020
USD ($)
Sep. 26, 2021
USD ($)
segment
Sep. 27, 2020
USD ($)
Segment Reporting Information [Line Items]        
Number of reportable segments (in segments) | segment     2  
Total sales $ 1,060,177 $ 700,707 $ 2,930,613 $ 1,713,984
Operating income 93,273 59,829 257,020 111,214
Manufacturing        
Segment Reporting Information [Line Items]        
Total sales 772,235 494,274 2,102,032 1,206,114
Distribution        
Segment Reporting Information [Line Items]        
Total sales 287,942 206,433 828,581 507,870
Intersegment sales        
Segment Reporting Information [Line Items]        
Total sales 21,944 13,644 54,714 28,716
Intersegment sales | Manufacturing        
Segment Reporting Information [Line Items]        
Total sales 20,064 12,004 49,914 24,691
Intersegment sales | Distribution        
Segment Reporting Information [Line Items]        
Total sales 1,880 1,640 4,800 4,025
Operating Segments        
Segment Reporting Information [Line Items]        
Total sales 1,082,121 714,351 2,985,327 1,742,700
Operating income 122,557 79,756 352,790 164,776
Operating Segments | Manufacturing        
Segment Reporting Information [Line Items]        
Total sales 792,299 506,278 2,151,946 1,230,805
Operating income 91,370 63,312 269,227 131,426
Operating Segments | Distribution        
Segment Reporting Information [Line Items]        
Total sales 289,822 208,073 833,381 511,895
Operating income $ 31,187 $ 16,444 $ 83,563 $ 33,350