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Warrants (Detail) - $ / shares
 3 Months Ended 12 Months Ended
Jun. 30, 2017
Mar. 31, 2017
Mar. 30, 2016
Oct. 15, 2015
Oct. 14, 2015
Class of Warrant or Right [Line Items]          
Exercise Price Per Share   $ 1.1485 $ 10.00 $ 9.00 $ 9.00
Warrant Exercise Price Range One 4.00 - 5.00          
Class of Warrant or Right [Line Items]          
Warrants outstanding 188,500 188,500      
Weighted average remaining contractual life 7 months 6 days 10 months 6 days      
Warrants exercisable 188,500 169,500      
Weighted average exercise price per share $ 4.47 $ 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 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 $ 4.00      
Warrant Exercise Price Range Two 9.00 - 10.00          
Class of Warrant or Right [Line Items]          
Warrants outstanding 1,781,666 1,781,666      
Weighted average remaining contractual life 3 years 3 months 18 days 3 years 6 months 14 days      
Warrants exercisable 1,781,666 1,781,666      
Weighted average exercise price per share $ 9.37 $ 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 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 $ 9.00      
Warrant Exercise Price Range Three 1.15 - 10.00          
Class of Warrant or Right [Line Items]          
Warrants outstanding   1,970,166      
Weighted average remaining contractual life   3 years 3 months 11 days      
Warrants exercisable   1,951,166      
Weighted average exercise price per share   $ 8.90      
Warrant Exercise Price Range Three 1.15 - 10.00 | Maximum [Member]          
Class of Warrant or Right [Line Items]          
Exercise Price Per Share   10.00      
Warrant Exercise Price Range Three 1.15 - 10.00 | Minimum [Member]          
Class of Warrant or Right [Line Items]          
Exercise Price Per Share   $ 1.15      
Warrant Exercise Price Range Four 4.00 - 10.00          
Class of Warrant or Right [Line Items]          
Warrants outstanding 1,970,166        
Weighted average remaining contractual life 3 years 11 days        
Warrants exercisable 1,970,166        
Weighted average exercise price per share $ 8.90        
Warrant Exercise Price Range Four 4.00 - 10.00 | Maximum [Member]          
Class of Warrant or Right [Line Items]          
Exercise Price Per Share 10        
Warrant Exercise Price Range Four 4.00 - 10.00 | Minimum [Member]          
Class of Warrant or Right [Line Items]          
Exercise Price Per Share $ 4