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ACQUISITIONS (Narrative) (Details) $ in Thousands |  | 12 Months Ended
--- | --- | ---
Apr. 04, 2016 USD ($) | Sep. 28, 2018 USD ($) item | Sep. 29, 2017 USD ($) | Sep. 30, 2016 USD ($) item
Business Acquisition [Line Items] |  |  |  |
Number of businesses acquired | item |  | 0 |  | 2
Goodwill |  | $ 11,199 | $ 11,238 | $ 11,196
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 |  |

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