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Convertible Notes (Detail) (USD $)
Jul. 31, 2012
Jan. 31, 2012
Jul. 31, 2012
10% Senior Subordinated Convertible Notes due January 31, 2013
Jan. 31, 2012
10% Senior Subordinated Convertible Notes due January 31, 2013
Oct. 16, 2009
10% Senior Subordinated Convertible Notes due January 31, 2013
Jul. 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 $ 1,073,282 $ 746,366 $ 923,282 $ 596,366 $ 1,250,000 $ 150,000 $ 150,000 $ 150,000
Less: Current Portion 923,282 596,366            
Long Term Portion $ 150,000 $ 150,000