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Fair Value Measurements (Tables)
 12 Months Ended
Mar. 31, 2019
Fair Value Disclosures [Abstract]  
Schedule of fair values of certain financial instruments and the hierarchy level the company used to estimate the fair values
   March 31, 2019 
   Fair   Hierarchy Level 
   Value   Level 1   Level 2   Level 3 
Liabilities:                
Bifurcated embedded derivative on senior secured convertible debentures  $586   $-   $-   $586 

 

   March 31, 2019 
   Carrying   Hierarchy Level 
   Value   Level 1   Level 2   Level 3 
Assets:                
Cash and cash equivalents  $13,704   $13,704   $-   $- 
Restricted cash   235    235    -    - 
Liabilities:                    
Note payable   312    -    -    312 
Senior secured convertible debentures, net   11,809    -    -    13,737 
Unsecured convertible notes payable, net   4,741    -    -    8,844 

 

   March 31, 2018 
   Carrying   Hierarchy Level 
   Value   Level 1   Level 2   Level 3 
Assets:                
Cash and cash equivalents  $10,285   $10,285   $-   $- 
Restricted cash   3,685    3,685    -    - 
Liabilities:                    
Note payable   294    -    -    294 
Bank debt   3,500    -    3,500    - 
Unsecured convertible notes payable, net   4,916    -    -    4,916 
Schedule of derivative instruments

   Amount 
Balance as of March 31, 2018  $- 
Bifurcated embedded derivative recognized on issuance of senior secured convertible debentures   263 
Total fair value adjustments reported in earnings   323 
Balance as of March 31, 2019  $586