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Income Taxes - Schedule of Domestic and Foreign Components of Income (Loss) Before Income Taxes (Details) - USD ($)
$ in Thousands
12 Months Ended
Sep. 30, 2017
Oct. 01, 2016
Oct. 03, 2015
Income Tax Disclosure [Abstract]      
U.S. $ (35,209) $ (26,796) $ (32,480)
Foreign 157,032 114,190 138,775
Income before income taxes $ 121,823 $ 87,394 $ 106,295