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Financial Condition and Business Plan (Details Narrative) - USD ($)
 1 Months Ended 3 Months Ended 12 Months Ended
Apr. 01, 2022
Jun. 18, 2021
Aug. 28, 2020
Apr. 30, 2022
Jun. 30, 2018
Mar. 31, 2022
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2021
Cumulative net losses           $ 343,243,923         $ 332,769,591
Cash and cash equivalents, short-term investments           47,300,000          
Net proceeds from sale of net operating losses             $ 1,400,000 $ 1,900,000      
Series A & B Preferred Stock [Member]                      
Proceeds from issuance of redeemable preferred stock           $ 7,000,000.0          
Subsequent Event [Member]                      
Proceeds from short term investments       $ 7,000,000.0              
Subsequent Event [Member] | Series A & B Preferred Stock [Member]                      
Proceeds from issuance of redeemable preferred stock $ 1,300,000                    
Horizon Credit Agreement [Member] | Horizon Technology Finance Corporation [Member]                      
Proceeds from Contributed Capital         $ 10,000,000            
Debt instrument, face amount     $ 10,000,000                
Horizon Credit Agreement [Member] | Horizon Technology Finance Corporation [Member] | London Interbank Offered Rate (LIBOR) [Member]                      
Debt Instrument, Interest Rate, Stated Percentage         7.625%            
SVB Loan Facility [Member]                      
Debt instrument, description   Payments under the loan agreement are interest only for the first 24 months after loan closing, followed by a 24-month amortization period of principal and interest through the scheduled maturity date       Payments under the loan agreement are interest only (calculated based on one-month LIBOR plus 7.625%) for the first 24 months through July 2020, followed by a 21-month amortization period of principal and interest starting on August 1, 2020 and ending through the scheduled maturity date on April 1, 2023.          
Debt Instrument, Interest Rate, Stated Percentage   3.25%                  
Debt instrument maturity date           Apr. 01, 2023          
Line of credit facility, maximum borrowing capacity   $ 10,000,000                  
Line of credit facility, remaining borrowing capacity   4,000,000                  
SVB Loan Facility [Member] | Silicon Valley Bank [Member]                      
Line of credit facility, maximum borrowing capacity   $ 10,000,000       $ 10,000,000          
Line of credit facility, remaining borrowing capacity           $ 4,000,000          
SVB Loan Facility [Member] | Prime Rate [Member] | Silicon Valley Bank [Member]                      
Debt Instrument, Interest Rate, Stated Percentage           3.25%          
SVB Loan Facility [Member] | Horizon Technology Finance Corporation [Member]                      
Repayment of outstanding in-debtedness amount           $ 6,000,000          
Line of credit deposited amount           6,000,000          
Amendment to Horizon Credit Agreement [Member] | Horizon Technology Finance Corporation [Member]                      
Repayments of debt     5,000,000                
Debt instrument, face amount     5,000,000                
Debt instrument related end term charges     $ 200,000                
Maximum [Member]                      
Proceeds from short term investments           3,500,000          
New Jersey [Member]                      
Net proceeds from sale of net operating losses             1,500,000 $ 2,000,000.0 $ 12,200,000 $ 13,000,000  
New Jersey [Member] | Minimum [Member]                      
Net proceeds from sale of net operating losses             15,000,000        
New Jersey [Member] | Maximum [Member]                      
Net proceeds from sale of net operating losses             $ 20,000,000        
Operating Costs and Expenses           $ 3,500,000