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Subsequent Events - Settlement Agreement and Release - Additional Information (Details) - USD ($)
3 Months Ended
Jun. 30, 2021
Mar. 31, 2021
Mar. 31, 2020
Apr. 30, 2021
Dec. 31, 2020
Oct. 20, 2020
Oct. 19, 2020
Subsequent Event [Line Items]              
Warrants, exercise price         $ 0.01 $ 0.01 $ 2.50
Change in fair value of warrant liabilities   $ (3,107,000) $ (8,235,000)        
Gain (loss) on extinguishment of debt   534,000 $ (10,086,000)        
Note Purchase Agreements and Releases [Member]              
Subsequent Event [Line Items]              
Principal amount   3,600,000          
Notes payable in cash   $ 500,000          
Warrants to purchase shares of common stock   1,356,343          
Warrants, exercise price   $ 0.01          
Note Purchase Agreements and Releases [Member] | Subsequent Event [Member]              
Subsequent Event [Line Items]              
Principal amount $ 300,000     $ 300,000      
Notes payable in cash $ 100,000     $ 100,000      
Warrants to purchase shares of common stock 125,110     125,110      
Warrants, exercise price $ 0.01     $ 0.01      
Change in fair value of warrant liabilities $ 100,000            
Gain (loss) on extinguishment of debt $ 200