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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Foreign Operations And Related Derivative Financial Instruments) (Narrative) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Sep. 29, 2017 | Sep. 30, 2016 | Oct. 02, 2015
Foreign Currencies [Line Items] |  |  |
Currency gains from transactions | $ 903 | $ 277 |
Currency losses from transactions |  |  | $ 1,196
Percent of revenues in foreign currency | 17.00% |  |
Euro |  |  |
Foreign Currencies [Line Items] |  |  |
Percent of revenues in foreign currency | 7.00% |  |
Canadian Dollars |  |  |
Foreign Currencies [Line Items] |  |  |
Percent of revenues in foreign currency | 6.00% |  |
Various other foreign currencies |  |  |
Foreign Currencies [Line Items] |  |  |
Percent of revenues in foreign currency | 4.00% |  |

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- Definition Amount before tax of foreign currency transaction realized and unrealized gain recognized in the income statement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=64836518&loc=d3e30690-110894 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6450222&loc=d3e30840-110895 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64836518&loc=d3e30700-110894 + Details
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