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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 9 Months Ended
Jun. 29, 2018
Jun. 30, 2017
Jun. 29, 2018
Jun. 30, 2017
Income Tax Disclosure [Abstract]        
Profit (loss) before income taxes $ 31,779 $ 25,560 $ 69,548 $ 47,352
Income tax expense $ 8,009 $ 9,007 $ 23,923 $ 12,784
Effective income tax rate 25.20% 35.20% 34.40% 27.00%