v3.21.2
SEGMENT INFORMATION - Sales and Operating Income of Segments (Details)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 27, 2021
USD ($)
Jun. 28, 2020
USD ($)
Jun. 27, 2021
USD ($)
segment
Jun. 28, 2020
USD ($)
Segment Reporting Information [Line Items]        
Number of reportable segments (in segments) | segment     2  
Total sales $ 1,019,953 $ 424,045 $ 1,870,436 $ 1,013,277
Operating income 95,266 12,106 163,747 51,385
Manufacturing        
Segment Reporting Information [Line Items]        
Total sales 729,041 292,574 1,329,797 711,840
Distribution        
Segment Reporting Information [Line Items]        
Total sales 290,912 131,471 540,639 301,437
Intersegment Sales        
Segment Reporting Information [Line Items]        
Total sales 17,559 6,199 32,770 15,072
Intersegment Sales | Manufacturing        
Segment Reporting Information [Line Items]        
Total sales 16,042 5,114 29,850 12,687
Intersegment Sales | Distribution        
Segment Reporting Information [Line Items]        
Total sales 1,517 1,085 2,920 2,385
Operating Segments        
Segment Reporting Information [Line Items]        
Total sales 1,037,512 430,244 1,903,206 1,028,349
Operating income 130,629 29,348 230,233 85,020
Operating Segments | Manufacturing        
Segment Reporting Information [Line Items]        
Total sales 745,083 297,688 1,359,647 724,527
Operating income 99,428 22,410 177,857 68,114
Operating Segments | Distribution        
Segment Reporting Information [Line Items]        
Total sales 292,429 132,556 543,559 303,822
Operating income $ 31,201 $ 6,938 $ 52,376 $ 16,906