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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 |  |

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- 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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition 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 Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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