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Borrowing Arrangements (Tables) | 9 Months Ended
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Jun. 29, 2012
Debt Disclosure [Abstract] |
Additional Information About Companys Convertible Notes | The following tables provide additional information about the Company's 2007 Convertible Notes (in thousands):
| As of
| June 29, 2012 |  | September 30, 2011
Equity component of the convertible notes outstanding | $ | — |  |  | $ | 6,061 |
Principal amount of the convertible notes | $ | — |  |  | $ | 26,677 |
Unamortized discount of the liability component | $ | — |  |  | $ | 588 |
Net carrying amount of the liability component | $ | — |  |  | $ | 26,089 |
Internest Expense on Debt |
| Three-months Ended |  | Nine-months Ended
| June 29, 2012 |  | July 1, 2011 |  | June 29, 2012 |  | July 1, 2011
Effective interest rate on the liability component | — |  |  | 6.86 | % |  | 6.86 | % |  | 6.86 | %
Cash interest expense recognized (contractual interest) | $ | — |  |  | $ | 100 |  |  | $ | 105 |  |  | $ | 300 |
Effective interest expense recognized | $ | — |  |  | $ | 339 |  |  | $ | 428 |  |  | $ | 1,000 |

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- Definition Internest Expense on Debt [Table Text Block] + References No definition available. + Details
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- Definition Tabular disclosure of information pertaining to short-term and long-debt instruments or arrangements, including but not limited to identification of terms, features, collateral requirements and other information necessary to a fair presentation. + References No definition available. + Details
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