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Stockholders' Deficit - Additional Information (Detail) - USD ($)
3 Months Ended
Mar. 31, 2021
Jul. 30, 2019
Mar. 31, 2022
Mar. 31, 2021
Dec. 31, 2021
Jul. 01, 2021
Jun. 30, 2021
Class Of Stock [Line Items]              
Common stock, shares authorized     400,000,000   400,000,000 400,000,000 200,000,000
New Sales Agreement [Member] | Canaccord [Member]              
Class Of Stock [Line Items]              
Aggregate gross sales amount of common stock $ 75,000,000.0            
Percentage of agent service fee   3.00%          
Proceeds from issuance of common stock     $ 1,400,000        
Number of shares issued/sold     3,549,360 0      
Original Sales Agreement | Canaccord [Member]              
Class Of Stock [Line Items]              
Percentage of agent service fee   3.00%