Quarterly report pursuant to sections 13 or 15(d)

Long-Term Debt (Schedule of Interest Costs) (Details)

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Long-Term Debt (Schedule of Interest Costs) (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Mar. 31, 2013
Mar. 31, 2012
Long-Term Debt [Abstract]        
Interest expense $ 311 $ 467 $ 678 $ 936
Interest capitalized 12 9 29 38
Total interest cost $ 323 $ 476 $ 707 $ 974