Summary of Significant Accounting Policies (Details 2) (Not Designated as Hedging Instrument [Member], USD $)	Sep. 30, 2012	Sep. 30, 2011
Summary of derivative contracts
Asset Derivatives		$ 269,329
Liability Derivatives	172,271	53,389
Commodity contracts [Member] | Short-term derivative contracts [Member]
Summary of derivative contracts
Asset Derivatives		269,329
Liability Derivatives	172,271
Commodity contracts [Member] | Long-term derivative contracts [Member]
Summary of derivative contracts
Asset Derivatives
Liability Derivatives		$ 53,389