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Warrants (Detail) - $ / shares
 9 Months Ended
Dec. 31, 2016
Oct. 14, 2015
Class of Warrant or Right [Line Items]    
Exercise Price Per Share $ 1.1485 $ 9.00
Warrant Exercise Price Range One 4.00 - 5.00    
Class of Warrant or Right [Line Items]    
Warrants outstanding 188,500  
Weighted average remaining contractual life 1 year 1 month 6 days  
Warrants exercisable 188,500  
Weighted average exercise price per share $ 4.47  
Warrant Exercise Price Range One 4.00 - 5.00 | Maximum [Member]    
Class of Warrant or Right [Line Items]    
Exercise Price Per Share 5.00  
Warrant Exercise Price Range One 4.00 - 5.00 | Minimum [Member]    
Class of Warrant or Right [Line Items]    
Exercise Price Per Share $ 4.00  
Warrant Exercise Price Range Two 9.00 - 10.00    
Class of Warrant or Right [Line Items]    
Warrants outstanding 1,781,666  
Weighted average remaining contractual life 3 years 9 months 14 days  
Warrants exercisable 1,781,666  
Weighted average exercise price per share $ 9.37  
Warrant Exercise Price Range Two 9.00 - 10.00 | Maximum [Member]    
Class of Warrant or Right [Line Items]    
Exercise Price Per Share 10.00  
Warrant Exercise Price Range Two 9.00 - 10.00 | Minimum [Member]    
Class of Warrant or Right [Line Items]    
Exercise Price Per Share $ 9.00  
Warrant Exercise Price Range Three 4.00 - 10.00    
Class of Warrant or Right [Line Items]    
Warrants outstanding 1,970,166  
Weighted average remaining contractual life 3 years 6 months 11 days  
Warrants exercisable 1,970,166  
Weighted average exercise price per share $ 8.90  
Warrant Exercise Price Range Three 4.00 - 10.00 | Maximum [Member]    
Class of Warrant or Right [Line Items]    
Exercise Price Per Share 10.00  
Warrant Exercise Price Range Three 4.00 - 10.00 | Minimum [Member]    
Class of Warrant or Right [Line Items]    
Exercise Price Per Share $ 4.00