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Warrants (Detail)
 0 Months Ended 12 Months Ended
Oct. 16, 2009
Jan. 31, 2013
Oct. 29, 2012
Jan. 31, 2012
Class of Warrant or Right [Line Items]        
Exercise Price   0.125 0.11485 0.11485
Warrants outstanding 1,500,000 2,936,000    
Weighted average remaining contractual life   4 years 1 month 24 days    
Warrants Exercisable   2,936,000    
Weighted average exercise price   0.27748    
Convertible Note
        
Class of Warrant or Right [Line Items]        
Exercise Price   0.45 0.11485  
Warrants outstanding 1,250,000 500,000    
Placement Agents
        
Class of Warrant or Right [Line Items]        
Exercise Price   0.50 0.11485  
Warrants outstanding 250,000 100,000    
Warrant Exercise Price Range One 0.11485
        
Class of Warrant or Right [Line Items]        
Exercise Price   0.11485    
Warrants outstanding   1,250,000    
Weighted average remaining contractual life   3 years 9 months 4 days    
Warrants Exercisable   1,250,000    
Weighted average exercise price   0.11485    
Warrant Exercise Price Range Two 0.11485
        
Class of Warrant or Right [Line Items]        
Exercise Price   0.11485    
Warrants outstanding   250,000    
Weighted average remaining contractual life   3 years 9 months 4 days    
Warrants Exercisable   250,000    
Weighted average exercise price   0.11485    
Warrant Exercise Price Range Three 0.45000
        
Class of Warrant or Right [Line Items]        
Exercise Price   0.45000    
Warrants outstanding   500,000    
Weighted average remaining contractual life   3 years 9 months 4 days    
Warrants Exercisable   500,000    
Weighted average exercise price   0.45000    
Warrant Exercise Price Range Four 0.50000
        
Class of Warrant or Right [Line Items]        
Exercise Price   0.50000    
Warrants outstanding   100,000    
Weighted average remaining contractual life   5 years    
Warrants Exercisable   100,000    
Weighted average exercise price   0.50000    
Warrant Exercise Price Range Five 0.45000
        
Class of Warrant or Right [Line Items]        
Exercise Price   0.45000    
Warrants outstanding   660,000    
Weighted average remaining contractual life   5 years    
Warrants Exercisable   660,000    
Weighted average exercise price   0.45000    
Warrant Exercise Price Range Six 0.40000
        
Class of Warrant or Right [Line Items]        
Exercise Price   0.40000    
Warrants outstanding   176,000    
Weighted average remaining contractual life   5 years    
Warrants Exercisable   176,000    
Weighted average exercise price   0.40000