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Long-Term Debt (Schedule of Interest Costs) (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Sep. 30, 2012 | Sep. 30, 2011 | Sep. 30, 2010
Long-Term Debt [Abstract] |  |  |  |  |  |
Interest expense | $ 1,616 | [1] | $ 2,020 | [1] | $ 6,879 | [1]
Interest capitalized | 100 |  | 127 |  | 98 |
Total interest cost | 1,716 |  | 2,147 |  | 6,977 |
Prepayment penalty |  |  |  |  | 3,094 |
Recognition of unamortized loan origination fees |  |  |  |  | $ 305 |
[1] | Interest expense for the year ended September 30, 2010 includes a prepayment penalty of $3,094,000 and $305,000 of loan fees.

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