Investment In And Loans To Dynamic Fuels, LLC (Schedule Of Equity Method Investments) (Details) (Dynamic Fuels, LLC [Member], USD $) In Thousands, unless otherwise specified	Jun. 30, 2012
Dynamic Fuels, LLC [Member]
Cash and Receivables	$ 4,980
Inventory	21,135
Property, Plant and Equipment and Other Assets	154,679
Total Assets	180,794
Accounts Payable and Accrued Liabilities	4,994
Notes and Accounts Payable to Related Parties	31,726
Long-Term Liabilities	100,050
Total Liabilities	136,770
Total Members' Equity	44,024
Total Liabilities and Members' Equity	$ 180,794