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FAIR VALUE MEASUREMENTS (Narrative) (Details) - USD ($)	3 Months Ended	12 Months Ended
	Jul. 01, 2016	Sep. 28, 2018	Sep. 29, 2017	Sep. 30, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment losses		$ 0	$ 0	$ 6,197,000
Goodwill		11,199,000	11,238,000	11,196,000
Diving
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment losses	$ 6,197,000		6,197,000
Goodwill		0	0	$ 0
Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure, nonrecurring		0	0
Liabilities, fair value disclosure, nonrecurring		$ 0	$ 0

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- Definition

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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No definition available.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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