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Other Financial Information (Supplemental Cash Flow Information) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Sep. 29, 2017 | Sep. 30, 2016
Other Financial Information [Abstract] |  |
Working capital | $ 9,121 | $ 10,023
Property and equipment | 912 | 879
Noncurrent assets | 35,976 | 8,192
Deferred liabilities | (273) |
Goodwill | $ 104,454 | $ 30,849

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