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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. 30, 2017
Jul. 01, 2016
Jun. 30, 2017
Jul. 01, 2016
Income Tax Disclosure [Abstract]        
Profit before income taxes $ 25,560 $ 13,865 $ 47,352 $ 28,015
Income tax expense $ 9,007 $ 7,024 $ 12,784 $ 12,387
Effective income tax rate 35.20% 50.70% 27.00% 44.20%