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Capital Stock - Additional Information (Details) - USD ($)
3 Months Ended
Jan. 21, 2021
Dec. 10, 2020
Dec. 06, 2020
Oct. 21, 2020
Oct. 01, 2019
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
Dec. 31, 2019
Class of Stock [Line Items]                  
Conversion of convertible preferred stock, shares (in shares)         1,315,790        
Issuance of stock for services           $ 274,000      
Issuance of common shares from warrant exercise (in shares)       521,500          
Warrant term       2 years          
Exercise price (in dollars per share)           $ 4.85   $ 4.85 $ 0.01
Warrant exercises           0      
General and administrative expense                  
Class of Stock [Line Items]                  
Accrued professional fees           $ 274,000      
Warrants                  
Class of Stock [Line Items]                  
Issuance of common shares from warrant exercise (in shares)     625,000            
Warrant term     2 years            
Exercise price (in dollars per share)     $ 5.49 $ 4.08          
Fair value of SVB Warrant     $ 2,635,425 $ 1,334,087          
Common Stock                  
Class of Stock [Line Items]                  
Conversion of convertible preferred stock, shares (in shares)           18,846,411 50,000    
Issuance of shares for professional service fees (in shares) 21,008 50,000       21,008      
Issuance of stock for services $ 100,000 $ 348,000