Stockholders' Equity - Common Stock - Additional Information (Detail) - USD ($)	3 Months Ended
	Jun. 30, 2021	Mar. 31, 2021	Jan. 29, 2021	Jan. 19, 2021
Class Of Stock [Line Items]
Securities authorized for offer and sale, amount				$ 150,000,000.0
2021 Inducement Equity Plan [Member]
Class Of Stock [Line Items]
Common shares authorized to be issued		750,000
2018 Sales Agreement [Member]
Class Of Stock [Line Items]
Equity sales agreement expiration date	Feb. 22, 2021
Sales Agreement pursuant to 2021 Shelf [Member]
Class Of Stock [Line Items]
Issuance of common stock from stock options exercises, net, Shares	1,580,862
Value of shares sold under equity distribution agreement	$ 21,700,000
2021 Sales Agreement [Member]
Class Of Stock [Line Items]
Common stock value reserved for future issuance	128,300,000
IPO [Member]
Class Of Stock [Line Items]
Securities authorized for offer and sale, amount	$ 100,000,000.0
At-The-Market Facility [Member] | Sales Agreement [Member] | Maximum [Member]
Class Of Stock [Line Items]
Common stock value reserved for future issuance			$ 50,000,000.0
At-The-Market Facility [Member] | Sales Agreement pursuant to 2021 Shelf [Member]
Class Of Stock [Line Items]
Issuance of common stock from stock options exercises, net, Shares	27,545
Value of shares sold under equity distribution agreement	$ 300,000
At-The-Market Facility [Member] | 2021 Sales Agreement [Member]
Class Of Stock [Line Items]
Common stock value reserved for future issuance	$ 28,300,000