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FAIR VALUE MEASUREMENTS (Narrative) (Details) - USD ($) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jun. 30, 2017 | Jul. 01, 2016 | Jun. 30, 2017 | Jul. 01, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Goodwill impairment loss | $ 0 | $ 6,197,000 | $ 0 | $ 6,197,000
Goodwill |  | 6,197,000 |  | $ 6,197,000
Assets at fair value, nonrecurring | 0 |  | 0 |
Liabilities at fair value, nonrecurring | 0 |  | 0 |
Diving |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Goodwill impairment loss |  | $ 6,197,000 |  |
Goodwill | $ 0 |  | $ 0 |

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- Definition Fair value portion of asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19190-110258 + Details
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