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INCOME TAXES (Net deferred tax balance) (Details) - USD ($) $ in Thousands | Sep. 30, 2017 | Oct. 01, 2016
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Income Tax Disclosure [Abstract] |  |
Inventory reserves | $ 589 | $ 546
Stock options | 422 | 647
Other accruals and reserves | 7,857 | 5,305
Domestic tax credit carryforwards | 17,635 | 8,011
Net operating loss carryforwards | 35,937 | 31,817
Deferred Tax Assets, Gross | 62,440 | 46,326
Valuation allowance | (29,614) | (27,381)
Total long-term deferred tax asset | 32,826 | 18,945
Foreign withholding tax on undistributed earnings | 20,945 | 20,119
Fixed and intangible assets | 11,262 | 9,333
Total long-term deferred tax liability | 32,207 | 29,452
Total net deferred tax asset / (liability) | 619 |
Total net deferred tax asset / (liability) |  | (10,507)
Deferred tax asset | 27,771 | 16,822
Deferred tax liability | $ 27,152 | $ 27,329

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