Subsequent events (Detail) (Subsequent Event [Member], USD $)	12 Months Ended
	Sep. 30, 2012
Debt Conversion, Converted Instrument, Shares Issued	10,500,000
Debt Conversion, Original Debt, Amount (in Dollars)	10,000
Common Stock [Member]
Conversion of Stock, Shares Issued	6,571,000
Series C Preferred Stock [Member]
Conversion of Stock, Shares Converted	6,571
Convertible Promissory Note [Member]
Debt Instrument, Face Amount (in Dollars)	53,000
Proceeds from Debt, Net of Issuance Costs (in Dollars)	50,000
Debt Instrument, Interest Rate, Stated Percentage	8.00%
Debt Instrument, Maturity Date	Jul. 05, 2013
Debt Instrument, Convertible, Terms of Conversion Feature	After six months from the date of issue, the promissory note may be converted into shares of common stock at a rate of 58% of the average of the three lowest closing bid prices during the ten trading days prior to notice to convert.
Debt Conversion, Converted Instrument, Shares Issued	9,654,476
Debt Instrument, Convertible, Type of Equity Security	common stock
Debt Conversion, Original Debt, Amount (in Dollars)	53,000