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Summary Of Significant Accounting Policies (Schedule Of Goodwill) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Oct. 02, 2015 | Oct. 03, 2014 | Sep. 27, 2013
Goodwill [Line Items] |  |  |
Goodwill, balance at beginning of period | $ 14,416 | $ 21,053 |
Impairment | 0 | (6,475) | $ 0
Amount attributable to movements in foreign currency rates | (124) | (162) |
Goodwill, Balance at end of period | 14,292 | 14,416 | 21,053
Gross Goodwill | 60,682 | 60,806 | 60,968
Accumulated Impairment | (46,390) | (46,390) | (39,915)
Marine Electronics [Member] |  |  |
Goodwill [Line Items] |  |  |
Goodwill, balance at beginning of period | $ 10,367 | $ 10,367 |
Impairment |  |  |
Amount attributable to movements in foreign currency rates |  |  |
Goodwill, Balance at end of period | $ 10,367 | $ 10,367 | 10,367
Diving [Member] |  |  |
Goodwill [Line Items] |  |  |
Goodwill, balance at beginning of period | 4,049 | 4,211 |
Amount attributable to movements in foreign currency rates | (124) | (162) |
Goodwill, Balance at end of period | $ 3,925 | 4,049 | 4,211
Outdoor Equipment [Member] |  |  |
Goodwill [Line Items] |  |  |
Goodwill, balance at beginning of period |  | 6,475 |
Impairment |  | $ (6,475) |
Goodwill, Balance at end of period |  |  | $ 6,475

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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 + Details
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- Definition Amount before 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a,h) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
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