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Warrants (Detail) (USD $)
 6 Months Ended
Sep. 30, 2014
Class of Warrant or Right [Line Items]  
Warrants outstanding 9,145,000
Weighted average remaining contractual life 4 years 9 months 18 days
Warrants exercisable 9,145,000
Weighted average exercise price per share $ 0.9700
Warrant Exercise Price Range One 0.11485
  
Class of Warrant or Right [Line Items]  
Exercise Price Per Share $ 0.11485
Warrants outstanding 1,250,000
Weighted average remaining contractual life 1 year 9 months 18 days
Warrants exercisable 1,250,000
Weighted average exercise price per share $ 0.1149
Warrant Exercise Price Range Two 0.11485
  
Class of Warrant or Right [Line Items]  
Exercise Price Per Share $ 0.11485
Warrants outstanding 250,000
Weighted average remaining contractual life 1 year 9 months 18 days
Warrants exercisable 250,000
Weighted average exercise price per share $ 0.1149
Warrant Exercise Price Range Three 0.45000
  
Class of Warrant or Right [Line Items]  
Exercise Price Per Share $ 0.45000
Warrants outstanding 500,000
Weighted average remaining contractual life 1 year 9 months 18 days
Warrants exercisable 500,000
Weighted average exercise price per share $ 0.4500
Warrant Exercise Price Range Four 0.50000
  
Class of Warrant or Right [Line Items]  
Exercise Price Per Share $ 0.50000
Warrants outstanding 100,000
Weighted average remaining contractual life 3 years 1 month 6 days
Warrants exercisable 100,000
Weighted average exercise price per share $ 0.5000
Warrant Exercise Price Range Five 0.45000
  
Class of Warrant or Right [Line Items]  
Exercise Price Per Share $ 0.45000
Warrants outstanding 825,000
Weighted average remaining contractual life 3 years 3 months 18 days
Warrants exercisable 825,000
Weighted average exercise price per share $ 0.4500
Warrant Exercise Price Range Six 0.40000
  
Class of Warrant or Right [Line Items]  
Exercise Price Per Share $ 0.40000
Warrants outstanding 220,000
Weighted average remaining contractual life 3 years 3 months 18 days
Warrants exercisable 220,000
Weighted average exercise price per share $ 0.4000
Warrant Exercise Price Range Seven 1.00000
  
Class of Warrant or Right [Line Items]  
Exercise Price Per Share $ 1.00000
Warrants outstanding 2,000,000
Weighted average remaining contractual life 6 years 6 months
Warrants exercisable 2,000,000
Weighted average exercise price per share $ 1.0000
Warrant Exercise Price Range Eight 2.00000
  
Class of Warrant or Right [Line Items]  
Exercise Price Per Share $ 2.00000
Warrants outstanding 2,000,000
Weighted average remaining contractual life 6 years 6 months
Warrants exercisable 2,000,000
Weighted average exercise price per share $ 1.0000
Warrant Exercise Price Range Nine 1.00000
  
Class of Warrant or Right [Line Items]  
Exercise Price Per Share $ 1.00000
Warrants outstanding 1,000,000
Weighted average remaining contractual life 6 years 6 months
Warrants exercisable 1,000,000
Weighted average exercise price per share $ 1.0000
Warrant Exercise Price Range Ten 1.00000
  
Class of Warrant or Right [Line Items]  
Exercise Price Per Share $ 1.00000
Warrants outstanding 1,000,000
Weighted average remaining contractual life 3 years 9 months 18 days
Warrants exercisable 1,000,000
Weighted average exercise price per share $ 1.0000