Investment In And Loans To Dynamic Fuels (Schedule Of Equity Method Investments) (Details) (Dynamic Fuels, LLC [Member], USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Sep. 30, 2012
Dynamic Fuels, LLC [Member]
Cash and Current Assets	$ 5,378	$ 9,337
Inventory	1,597	17,509
Property, Plant and Equipment and Other Assets	150,220	150,258
Total Assets	157,195	177,104
Accounts Payable	2,975	10,241
Notes and Accounts Payable to Related Parties	29,123	29,976
Long-Term Liabilities	100,053	100,051
Total Liabilities	132,151	140,268
Total Members' Equity	25,044	36,836
Total Liabilities and Members' Equity	$ 157,195	$ 177,104