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GOODWILL AND INTANGIBLE ASSETS (Goodwill by Reportable Segment) (Details) - USD ($)
$ in Thousands
 3 Months Ended
Dec. 30, 2023
Sep. 30, 2023
Goodwill [Roll Forward]    
Balance at October 1, 2022 $ 88,673  
Other 843  
Balance at December 30, 2023 89,516  
Goodwill, cumulative impairment   $ 45,000
Ball Bonding Equipment    
Goodwill [Roll Forward]    
Balance at October 1, 2022 18,280  
Other 0  
Balance at December 30, 2023 18,280  
APS    
Goodwill [Roll Forward]    
Balance at October 1, 2022 26,109  
Other 125  
Balance at December 30, 2023 26,234  
All Others    
Goodwill [Roll Forward]    
Balance at October 1, 2022 44,284  
Other 718  
Balance at December 30, 2023 $ 45,002