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Long-Term Debt (Schedule of Interest Costs) (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended
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Jun. 30, 2013 | Jun. 30, 2012 | Jun. 30, 2013 | Jun. 30, 2012
Long-Term Debt [Abstract] |  |  |  |
Interest expense | $ 290 | $ 354 | $ 968 | $ 1,290
Interest capitalized | 31 | 24 | 60 | 62
Total interest cost | $ 321 | $ 378 | $ 1,028 | $ 1,352

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