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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Reclassifications Out of Accumulated OCI) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Sep. 29, 2017 | Sep. 30, 2016 | Oct. 02, 2015
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |
Amounts reclassified from accumulated other comprehensive income | $ 517 | $ 102 | $ 562
Unamortized loss on defined benefit pension plans |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |
Amortization of loss | 731 | 566 | 622
Tax effects | (278) | (215) | (237)
Foreign currency translation adjustments |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |
Amounts reclassified from accumulated other comprehensive income | $ 64 | $ (249) | $ 177

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