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ORGANIZATION AND BASIS OF PRESENTATION - Additional Information (Details) - USD ($)
1 Months Ended 3 Months Ended 12 Months Ended
Aug. 01, 2018
Aug. 31, 2018
Aug. 01, 2018
Mar. 31, 2020
Mar. 31, 2019
Dec. 31, 2019
Apr. 30, 2020
Aug. 14, 2019
Jan. 01, 2019
Organization Consolidation And Presentation Of Financial Statements Line Items [Line Items]                  
Stock Issued During Period, Shares, New Issues   1,000,000              
Shares Issued, Price Per Share   $ 6.25              
Proceeds from Issuance of Common Stock   $ 5,609,000              
Payments of Stock Issuance Costs   $ 641,000              
Stockholders' Equity Note, Stock Split     1 share for every 25 shares            
Common Stock, Shares Authorized 50,000,000   50,000,000 50,000,000   50,000,000      
Conversion of Stock, Shares Converted 186,994,384                
Conversion of Stock, Shares Issued 7,479,775                
Deferred Revenue, Current       $ 5,143,000 $ 5,143,000 $ 5,372,000      
Deferred Revenue, Noncurrent       $ 141,000   153,000      
Deferred revenue recognized to revenue         $ 2,087,000        
Deferred revenue recognized through the period (as a percent)       38.00%          
Fair value of warrants       $ 92,000   120,000      
Debt issuance costs, net       82,000   137,000      
Operating Lease Liability       814,000   864,000     $ 568,000
Operating Lease, Right-of-Use Asset       $ 776,000   $ 827,000     $ 557,000
Accounts Receivable [Member] | Major Customer Number Two [Member]                  
Organization Consolidation And Presentation Of Financial Statements Line Items [Line Items]                  
Concentration Risk, Percentage           40.00%      
Accounts Receivable [Member] | Customer Concentration Risk [Member]                  
Organization Consolidation And Presentation Of Financial Statements Line Items [Line Items]                  
Concentration Risk, Percentage       18.00%          
Previously Reported [Member]                  
Organization Consolidation And Presentation Of Financial Statements Line Items [Line Items]                  
Common Stock, Shares Authorized 250,000,000   250,000,000            
Sero Capital LLC                  
Organization Consolidation And Presentation Of Financial Statements Line Items [Line Items]                  
Percentage of equity interests held by the related party               10.00%  
Warrants issued               146,667  
Warrants exercise price               $ 6.00  
Fair value of warrants       $ 92,000       $ 219,000  
Warrants and Rights Outstanding, Term               1 year  
Debt issuance costs, net       $ 82,000          
Sero Capital LLC | Contractual term                  
Organization Consolidation And Presentation Of Financial Statements Line Items [Line Items]                  
Warrants and Rights Outstanding, Term               6 months  
Sero Capital LLC | Risk-free interest rate                  
Organization Consolidation And Presentation Of Financial Statements Line Items [Line Items]                  
Warrants and Rights Outstanding, Measurement Input               0.17  
Sero Capital LLC | Dividend yield                  
Organization Consolidation And Presentation Of Financial Statements Line Items [Line Items]                  
Warrants and Rights Outstanding, Measurement Input               0.0  
Sero Capital LLC | Volatility rate                  
Organization Consolidation And Presentation Of Financial Statements Line Items [Line Items]                  
Warrants and Rights Outstanding, Measurement Input               101.7  
Unsecured credit facility                  
Organization Consolidation And Presentation Of Financial Statements Line Items [Line Items]                  
Maximum borrowing capacity               $ 2,000,000  
Unsecured credit facility | Sero Capital LLC                  
Organization Consolidation And Presentation Of Financial Statements Line Items [Line Items]                  
Percentage of equity interests held by the related party               10.00%  
Maximum borrowing capacity               $ 2,000,000  
Subsequent Event                  
Organization Consolidation And Presentation Of Financial Statements Line Items [Line Items]                  
Authorized amount             $ 7,000,000