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Unsecured Convertible Notes (Details Textual) - USD ($)
$ in Thousands
 1 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended
Mar. 30, 2018
Sep. 30, 2019
Mar. 31, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Mar. 31, 2019
Dec. 18, 2017
Feb. 21, 2017
Unsecured Convertible Notes (Textual)                  
Unsecured convertible notes payable outstanding, description         The Company had outstanding 7.5% (effective as of April 1, 2018, previously 6%) unsecured convertible notes payable (the "Trinad Notes") issued to Trinad Capital Master Fund Ltd. ("Trinad Capital"), a fund controlled by Mr. Ellin, the Company's Chief Executive Officer, Chairman, director and principal stockholder.        
Warrants to purchase of common stock            
Accrued interest         $ 100   $ 100    
Unsecured Debt [Member]                  
Unsecured Convertible Notes (Textual)                  
Total principal maturities of long-term borrowings for the year ended March 31,2020     $ 300       300    
Total principal maturities of long-term borrowings for the year ended March 31,2021     0       0    
Total principal maturities of long-term borrowings for the year ended March 31,2022     16,800       $ 16,800    
Accrued interest     3,800            
Unsecured convertible notes, description         (B) Between October 27, 2017 and December 18, 2017, the Company issued six unsecured convertible notes payable to Trinad Capital for aggregate total principal amount of $0.9 million. The notes were due on various dates through December 31, 2018 and were extended to May 31, 2019 and further extended to May 31, 2021 (as discussed below). For the three months ended September 30, 2019, the Company amortized less than $0.1 million of discount to interest expense, and the unamortized discount as of September 30, 2019 was $0.1 million. As of September 30, 2019, $0.1 million of accrued interest was added to the principal balance.         
Unsecured Debt [Member] | First Trinad Note [Member]                  
Unsecured Convertible Notes (Textual)                  
Accrued interest     $ 200            
Convertible Notes Payable A [Member]                  
Unsecured Convertible Notes (Textual)                  
Principal amount                 $ 3,600
Convertible Notes Payable E [Member]                  
Unsecured Convertible Notes (Textual)                  
Accrued interest         $ 4,000        
Convertible Notes Payable E [Member] | First Trinad Note [Member]                  
Unsecured Convertible Notes (Textual)                  
Accrued interest         $ 4,000        
Convertible Notes Payable B [Member]                  
Unsecured Convertible Notes (Textual)                  
Principal amount               $ 900  
Interest rate payable, description The Company entered into an Amendment of Notes Agreement (the "Amendment Agreement") with Trinad Capital pursuant to which the maturity date of all of the Company's 6% unsecured convertible notes was extended to May 31, 2019. In consideration of the maturity date extension, the interest rate payable under the notes was increased from 6.0% to 7.5% beginning on April 1, 2018, and the aggregate amount of accrued interest due under all of the Trinad Notes as of March 31, 2018 of $0.3 million was paid.                
Senior Notes [Member]                  
Unsecured Convertible Notes (Textual)                  
Unsecured convertible notes, description         (A) The first Trinad Note was issued on February 21, 2017, to convert aggregate principal and interest of $3.6 million under the first senior promissory note and second senior promissory note with Trinad Capital previously issued on December 31, 2014 and April 8, 2015, respectively. The first Trinad Note was due on March 31, 2018 and was extended to May 31, 2019 and further extended to May 31, 2021 (as discussed below). At September 30, 2019, the balance due of $4.0 million which included no accrued interest, was outstanding under the first Trinad Note. At March 31, 2019, $3.8 million of principal, which included no accrued interest, was outstanding under the first Trinad Note.