Quarterly report pursuant to Section 13 or 15(d)

Common Stock - Authorized - Additional Information (Detail)

v3.20.2
Common Stock - Authorized - Additional Information (Detail) - $ / shares
Sep. 30, 2020
Jul. 31, 2020
Dec. 31, 2019
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]      
Common stock, shares authorized 150,000,000 150,000,000 150,000,000
Common stock, par value $ 0.001   $ 0.001
Preferred stock, shares authorized 5,000,000    
Preferred stock, par value $ 0.001