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ACQUISITIONS (Narrative) (Details)
$ in Thousands
12 Months Ended
Apr. 04, 2016
USD ($)
Sep. 27, 2019
USD ($)
item
Sep. 28, 2018
USD ($)
Sep. 29, 2017
USD ($)
item
Business Acquisition [Line Items]        
Number of businesses acquired | item   0   2
Goodwill   $ 11,186 $ 11,199 $ 11,238
Acquisition transaction costs       $ 753
SeaBear And Northport        
Business Acquisition [Line Items]        
Total consideration of acquisition     $ 9,200  
Goodwill   3,046    
SeaBear        
Business Acquisition [Line Items]        
Goodwill   $ 2,219    
Northport        
Business Acquisition [Line Items]        
Goodwill $ 827      
Indemnity escrow amount 500      
Period of time from acquisition date for indemnity claims   24 months    
Contingent consideration $ 250      
Useful Life (yrs)   7 years 6 months