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GOODWILL AND INTANGIBLE ASSETS (Goodwill by Reportable Segment) (Details) - USD ($)
$ in Thousands
 9 Months Ended
Jul. 01, 2023
Oct. 01, 2022
Goodwill [Roll Forward]    
Balance at October 1, 2022 $ 68,096  
Acquired in business combination 27,975  
Goodwill impairment 9,794  
Other 3,014  
Balance at July 1, 2023 89,291  
Goodwill, cumulative impairment   $ 35,200
Ball Bonding Equipment    
Goodwill [Roll Forward]    
Balance at October 1, 2022 18,280  
Acquired in business combination 0  
Goodwill impairment 0  
Other 0  
Balance at July 1, 2023 18,280  
APS    
Goodwill [Roll Forward]    
Balance at October 1, 2022 25,907  
Acquired in business combination 0  
Goodwill impairment 0  
Other 294  
Balance at July 1, 2023 26,201  
All Others    
Goodwill [Roll Forward]    
Balance at October 1, 2022 23,909  
Acquired in business combination 27,975  
Goodwill impairment 9,794  
Other 2,720  
Balance at July 1, 2023 $ 44,810