Convertible Preferred Stock and Stockholders' Deficit - Common Stock - Additional Information (Detail) - $ / shares	Mar. 31, 2021	Dec. 31, 2020
Class Of Stock [Line Items]
Common stock, shares authorized	120,000,000	120,000,000
Preferred stock, shares authorized	20,000,000
Common stock, par value	$ 0.001	$ 0.001
Non-redeemable convertible preferred stock, par value	$ 0.001
Series D Redeemable Convertible Preferred Stock [Member]
Class Of Stock [Line Items]
Redeemable convertible preferred stock shares authorized	50	50
Series B, Series G, Series I-1 and Series I-2 Non-redeemable Convertible Preferred Stock [Member]
Class Of Stock [Line Items]
Preferred stock, shares authorized	10,006,310	10,006,310