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SEGMENT INFORMATION (Schedule of net revenue by Capital Equipment end markets (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Apr. 03, 2021
Mar. 28, 2020
Apr. 03, 2021
Mar. 28, 2020
Segment Reporting, Revenue Reconciling Item [Line Items]        
Revenues $ 340,163 $ 150,741 $ 608,020 $ 295,038
Capital Equipment [Member]        
Segment Reporting, Revenue Reconciling Item [Line Items]        
Revenues 288,446 113,222 511,535 215,546
Capital Equipment [Member] | General Semiconductor [Member]        
Segment Reporting, Revenue Reconciling Item [Line Items]        
Revenues [1] 189,083 74,068 352,669 131,819
Capital Equipment [Member] | Automotive and Industrial [Member]        
Segment Reporting, Revenue Reconciling Item [Line Items]        
Revenues 41,957 20,037 64,929 41,815
Capital Equipment [Member] | LED [Member]        
Segment Reporting, Revenue Reconciling Item [Line Items]        
Revenues 50,740 10,167 83,121 22,059
Capital Equipment [Member] | Memory [Member]        
Segment Reporting, Revenue Reconciling Item [Line Items]        
Revenues $ 6,666 $ 8,950 $ 10,816 $ 19,853
[1] The Company noted a growing portion of the general semiconductor and LED end market is increasing in complexity and driving more capital intensity, therefore demanding more advanced packaging solutions. This has reduced the relevance of the advanced packaging end market. In view of this, sales previously defined as advanced packaging will be primarily categorized within the general semiconductor end market.