Summary of Significant Accounting Policies - Additional Information (Details) (USD $)	3 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Sep. 30, 2011
Property, Plant and Equipment [Line Items]
Number of Wholly owned subsidiaries	2
Leasehold improvements amortization period	5 years
Asset retirement obligations	$ 424,058	$ 425,700	$ 387,368