Allowance for Doubtful Accounts - Schedule of Allowance for Doubtful Accounts (Detail) - USD ($) $ in Thousands |
12 Months Ended | ||
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Sep. 30, 2017 |
Sep. 24, 2016 |
Sep. 26, 2015 |
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| Allowance for Doubtful Accounts Receivable [Roll Forward] | |||
| Balances at Beginning of Period | $ 21,069 | $ 19,296 | $ 25,212 |
| Charged/ (Credited) to Costs and Expenses | 2,921 | 6,041 | 741 |
| Asset Write-Offs, Less Recoveries | (2,554) | (4,268) | (6,657) |
| Balances at End of Period | $ 21,436 | $ 21,069 | $ 19,296 |
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- Definition For an unclassified balance sheet, a valuation allowance for receivables due a company that are expected to be uncollectible. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of increase (decrease) in the allowance for doubtful accounts. No definition available.
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
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- Definition Amount of direct write-downs of accounts receivable charged against the allowance. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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