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INCOME TAXES (Summary of Earnings Before Income Taxes, Income Tax Expense and Effective Income Tax Rate) (Details) - USD ($)
$ in Thousands
3 Months Ended
Dec. 29, 2017
Dec. 30, 2016
Income Tax Disclosure [Abstract]    
Profit (loss) before income taxes $ 8,324 $ (45)
Income tax expense $ 8,089 $ (4,101)
Effective income tax rate 97.20% 9113.30%