Accrued Expenses (Details) (USD $)	Mar. 31, 2013	Sep. 30, 2012
Components of accrued expenses
Accrued salaries	$ 412,938	$ 306,055
Interest payable	464,457	364,567
Other accrued expenses	417,073	237,106
Total accrued expenses	$ 1,294,468	$ 907,728