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Fair Value Measurements (Details 2) - USD ($)
$ in Thousands
Mar. 31, 2020
Mar. 31, 2019
Assets:    
Cash and cash equivalents $ 5,702 $ 13,704
Restricted cash 6,735 235
Level 1 [Member]    
Assets:    
Cash and cash equivalents 5,702 13,704
Restricted cash 6,735 235
Liabilities:    
Note payable
Senior secured convertible debentures, net
Unsecured convertible notes payable related party, net  
Unsecured convertible notes payable, net
Level 2 [Member]    
Assets:    
Cash and cash equivalents
Restricted cash
Liabilities:    
Note payable
Senior secured convertible debentures, net
Unsecured convertible notes payable related party, net  
Unsecured convertible notes payable, net
Level 3 [Member]    
Assets:    
Cash and cash equivalents
Restricted cash
Liabilities:    
Note payable 331 312
Senior secured convertible debentures, net 9,254 13,737
Unsecured convertible notes payable related party, net 4,451  
Unsecured convertible notes payable, net 1,338 8,844
Carrying Value [Member]    
Assets:    
Cash and cash equivalents 5,702 13,704
Restricted cash 6,735 235
Liabilities:    
Note payable 331 312
Senior secured convertible debentures, net 8,831 11,809
Unsecured convertible notes payable related party, net 5,114  
Unsecured convertible notes payable, net $ 1,539 $ 4,741