Convertible Notes (Detail) (USD $)	Oct. 31, 2012	Jan. 31, 2012	Oct. 31, 2012 10% Senior Subordinated Convertible Notes due January 31, 2016	Jan. 31, 2012 10% Senior Subordinated Convertible Notes due January 31, 2016	Oct. 16, 2009 10% Senior Subordinated Convertible Notes due January 31, 2016	Oct. 31, 2012 8% Senior Subordinated Convertible Notes due February 1, 2015	Jan. 31, 2012 8% Senior Subordinated Convertible Notes due February 1, 2015	Sep. 01, 2011 8% Senior Subordinated Convertible Notes due February 1, 2015
Debt Instrument [Line Items]
Convertible notes	$ 1,036,288	$ 746,366	$ 886,288	$ 596,366	$ 1,250,000	$ 150,000	$ 150,000	$ 150,000
Less: Current Portion		596,366
Long Term Portion	$ 1,036,288	$ 150,000