XML 84 R49.htm IDEA: XBRL DOCUMENT v3.20.1
Stockholders' Equity - Summary of Warrant Activity (Detail) - $ / shares
12 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Options Outstanding, Beginning balance 12,039,264  
Granted, Options Outstanding 342,500  
Expired / Canceled, Options Outstanding (4,743,688)  
Exercised, Options Outstanding 0 (622,192)
Options Outstanding, Ending balance 7,638,076 12,039,264
Weighted-Average Exercise Price, Options Beginning balance $ 2.24  
Granted, Weighted-Average Exercise Price 0.32  
Expired / Canceled, Weighted-Average Exercise Price 2.35  
Weighted-Average Exercise Price, Options Ending balance $ 2.08 $ 2.24
Warrants [Member]    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Options Outstanding, Beginning balance 145,000  
Granted, Options Outstanding 0  
Expired / Canceled, Options Outstanding (145,000)  
Exercised, Options Outstanding 0  
Options Outstanding, Ending balance 0 145,000
Weighted-Average Exercise Price, Options Beginning balance $ 7.11  
Granted, Weighted-Average Exercise Price 0  
Expired / Canceled, Weighted-Average Exercise Price 7.11  
Exercised, Weighted-Average Exercise Price 0  
Weighted-Average Exercise Price, Options Ending balance $ 0 $ 7.11