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Summary Of Significant Accounting Policies (Other Intangible Assets) (Narrative) (Details) - USD ($)	3 Months Ended	12 Months Ended
	Jul. 01, 2016	Sep. 30, 2016	Oct. 02, 2015	Oct. 03, 2014
Amortization of Patents and Other Intangible Assets		$ 1,179,000	$ 856,000	$ 765,000
Amortization of Patents and Other Intangible Assets, 2017		1,224,000
Amortization of Patents and Other Intangible Assets, 2018		1,024,000
Amortization of Patents and Other Intangible Assets, 2019		1,010,000
Amortization of Patents and Other Intangible Assets, 2020		945,000
Amortization of Patents and Other Intangible Assets, 2021		811,000
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)		0	$ 0
Goodwill and Intangible Asset Impairment		6,197,000		8,475,000
Diving [Member]
Impairment of long-lived assets	$ 0
Jetboil Inc [Member]
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)				$ 0
Indefinite-lived Intangible Assets, Fair Value		3,400,000
Goodwill and Intangible Asset Impairment		$ 2,000,000
Minimum [Member]
Useful Life		4 years
Maximum [Member]
Useful Life		15 years

X

- Definition

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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-Paragraph 2
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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Total loss recognized during the period from the impairment of goodwill plus the loss recognized in the period resulting from the impairment of the carrying amount of intangible assets, other than goodwill.

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The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of an intangible asset (excluding goodwill) to fair value.

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Amount of impairment loss resulting from write-down of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit to fair value.

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Fair value portion of assets, excluding financial assets and goodwill, that lack physical substance, having a projected indefinite period of benefit.

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