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Fair Value Measurements (Details 2) - USD ($)
$ in Thousands
Mar. 31, 2019
Mar. 31, 2018
Level 1 [Member]    
Assets:    
Cash and cash equivalents $ 13,704 $ 10,285
Restricted cash 235 3,685
Liabilities:    
Note payable
Bank debt  
Senior secured convertible debentures, net  
Unsecured convertible notes payable, net
Level 2 [Member]    
Assets:    
Cash and cash equivalents
Restricted cash
Liabilities:    
Note payable
Bank debt   3,500
Senior secured convertible debentures, net  
Unsecured convertible notes payable, net
Level 3 [Member]    
Assets:    
Cash and cash equivalents
Restricted cash
Liabilities:    
Note payable 312 294
Bank debt  
Senior secured convertible debentures, net 13,737  
Unsecured convertible notes payable, net 8,844 4,916
Carrying Value [Member]    
Assets:    
Cash and cash equivalents 13,704 10,285
Restricted cash 235 3,685
Liabilities:    
Note payable 312 294
Bank debt   3,500
Senior secured convertible debentures, net 11,809  
Unsecured convertible notes payable, net $ 4,741 $ 4,916