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Derivative Liability - Additional Information (Detail) - USD ($)
1 Months Ended 12 Months Ended
Nov. 30, 2014
Mar. 31, 2017
Mar. 31, 2016
Dec. 31, 2015
Mar. 31, 2015
Mar. 31, 2012
Mar. 31, 2011
Derivative [Line Items]              
Warrants issued           22,847,182 22,847,182
Warrants maturity term 5 years         5 years 5 years
Estimated fair value of the outstanding warrant liabilities   $ 0 $ 4,000        
Change in fair value of warrant liabilities   $ (4,000) $ 17,000 $ (196,000) $ (196,000)    
Exercised derivative liabilities   0 43,796        
Warrants expired   3,350          
Warrants [Member]              
Derivative [Line Items]              
Estimated fair value of the outstanding warrant liabilities   $ 0 $ 4,000