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Debt (Details Textual) (USD $)
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9 Months Ended | 12 Months Ended |
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Jun. 29, 2012
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Sep. 30, 2011
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| Debt (Textual) [Abstract] | ||
| Revolving credit facility | $ 125,000,000 | |
| Revolving credit facility maturity date | Sep. 01, 2016 | |
| Revolving credit facility interest date | Borrowings under the revolving credit facility bear either a variable interest rate equal to (i) the greater of the lender’s prime rate, the federal funds effective rate plus 0.5%, or an adjusted LIBOR plus 1.0%, in each case plus either an additional 1.25%, 1.50% or 1.75%, subject to certain conditions, or (ii) an adjusted LIBOR rate plus either 2.25%, 2.50% or 2.75%, subject to certain conditions. | |
| Revolving credit facility, LIBOR rate | adjusted LIBOR plus 1.0% | |
| Revolving credit facility federal funds effective rate | federal funds effective rate plus 0.5% | |
| Federal funds effective rate | 0.50% | |
| LIBOR rate | 1.00% | |
| Outstanding borrowings under the revolving credit facility | $ 0 | $ 0 |
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Interest Rate LIBOR One [Member]
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| Line of Credit Facility [Line Items] | ||
| Adjusted LIBOR rate percentage | 1.25% | |
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Interest Rate LIBOR Two [Member]
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| Line of Credit Facility [Line Items] | ||
| Adjusted LIBOR rate percentage | 1.50% | |
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Interest Rate LIBOR Three [Member]
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| Line of Credit Facility [Line Items] | ||
| Adjusted LIBOR rate percentage | 1.75% | |
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Interest Rate LIBOR Four [Member]
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| Line of Credit Facility [Line Items] | ||
| Adjusted LIBOR rate percentage | 2.25% | |
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Interest Rate LIBOR Five [Member]
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| Line of Credit Facility [Line Items] | ||
| Adjusted LIBOR rate percentage | 2.50% | |
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Interest Rate Libor Six [Member]
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| Line of Credit Facility [Line Items] | ||
| Adjusted LIBOR rate percentage | 2.75% |