Valuation And Qualifying Accounts (Schedule Of Valuation And Qualifying Accounts) (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Oct. 03, 2015 |
Sep. 27, 2014 |
Sep. 28, 2013 |
|
| Allowance For Losses On Accounts Receivable [Member] | |||
| Balance at beginning of period | $ 1,188 | $ 1,008 | $ 1,011 |
| Additions charged to costs and expenses | 581 | 513 | 1,036 |
| Valuation Allowances and Reserves, Charged to Other Accounts | 0 | 0 | 0 |
| Deductions | 890 | 333 | 1,039 |
| Balance at end of period | 879 | 1,188 | 1,008 |
| Valuation Allowance On Deferred Income Tax Assets [Member] | |||
| Balance at beginning of period | 41,935 | 34,075 | 27,087 |
| Additions charged to costs and expenses | 16,408 | 7,860 | 6,988 |
| Valuation Allowances and Reserves, Charged to Other Accounts | 0 | 0 | 0 |
| Deductions | 0 | 0 | 0 |
| Balance at end of period | $ 58,343 | $ 41,935 | $ 34,075 |