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INCOME TAXES (U.S. And Foreign Income Before Income Taxes) (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Sep. 29, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 30, 2016
Sep. 30, 2016
Jul. 01, 2016
Apr. 01, 2016
Jan. 01, 2016
Sep. 29, 2017
Sep. 30, 2016
Oct. 02, 2015
Income Tax Disclosure [Abstract]                      
United States                 $ 41,463 $ 28,881 $ 11,886
Foreign                 6,747 (5,226) 3,867
Profit before income taxes $ 858 $ 25,560 $ 21,837 $ (45) $ (4,360) $ 13,865 $ 14,669 $ (519) $ 48,210 $ 23,655 $ 15,753