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Fair Value Measurements (Tables)
9 Months Ended 12 Months Ended
Dec. 31, 2019
Mar. 31, 2019
Notes to Financial Statements    
Schedule of assets and liabilities that are measured and recognized at fair value on a recurring basis

    Level 1     Level 2     Level 3  
December 31, 2019                        
Warrant derivative liabilities     -       -     $ 3,759  
                         
March 31, 2019                        
Warrant derivative liabilities     -       -     $ 3,104  

2019  Level 1   Level 2   Level 3   Total Gains and (Losses) 

Warrant derivative liabilities

   -    -   $3,104   $3,160 
                     
2018                

Warrant derivative liabilities

   -    -   $3,694   $9,316