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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, 2014 | Sep. 30, 2013 | Sep. 30, 2012
Long-Term Debt [Abstract] |  |  |
Interest expense | $ 969 | $ 1,257 | $ 1,616
Interest capitalized | 204 | 79 | 100
Total interest cost | $ 1,173 | $ 1,336 | $ 1,716

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