Accrued expense-fees (Details Textual) (USD $)	9 Months Ended
	Jun. 30, 2013	Sep. 30, 2012
Accrued Expenses Fees [Line Items]
Reduction In Accrued Expenses Fees	$ 2,214,453
Accrued expenses fees	$ 12,549,844	$ 12,943,022