v3.20.1
Common Stock - Additional Information (Detail) - USD ($)
12 Months Ended
Oct. 14, 2019
Dec. 31, 2019
Dec. 31, 2018
Equity [Abstract]      
Common stock, shares authorized   300,000,000 300,000,000
Common stock, par value   $ 0.0001 $ 0.0001
Dividends common stock declared or paid   $ 0  
Warrants outstanding   917,562 317,562
Number of warrants issued to purchase common stock 600,000 317,562 317,562
Warrants exercise price per share $ 0.486   $ 5.00
Warrants term     3 years
Warrants vesting period 6 months    
Warrants expiration date   Oct. 24, 2024 Mar. 15, 2020