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Composition Of Certain Financial Statement Captions (Schedule Of Prepaid Expenses And Other Current Assets) (Details) - USD ($)
$ in Thousands
Jun. 28, 2019
Sep. 28, 2018
Composition Of Certain Financial Statement Captions [Abstract]    
Prepaid assets $ 20,348 $ 18,508
Other current assets 19,930 13,946
Income tax receivable 752 2,436
Prepaid expenses and other current assets $ 41,030 $ 34,890