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Income Taxes (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Apr. 01, 2017
Apr. 02, 2016
Apr. 01, 2017
Apr. 02, 2016
Income Tax Disclosure [Abstract]        
Income tax expense $ 3,124 $ 2,772 $ 5,971 $ 5,626
Effective tax rates 9.60% 14.20% 9.40% 15.30%