Capital Stock - Common Stock - Additional Information (Details) - USD ($)		3 Months Ended
	Feb. 09, 2021	Mar. 31, 2021	Dec. 31, 2020	[1]	Aug. 31, 2020	Jan. 31, 2020	Nov. 30, 2019	Jul. 31, 2019	Mar. 31, 2019	Dec. 31, 2018
Class Of Stock [Line Items]
Common stock, shares authorized	200,000,000	200,000,000	150,000,000		150,000,000	75,000,000	52,000,000	51,000,000	50,000,000	28,716,724
Common stock, par value per share	$ 0.001	$ 0.001	$ 0.001							$ 0.001
Net proceeds from initial public offering		$ 160,092,000
Dividends declared		$ 0
Common stock, voting rights		The holder of each share of common stock is entitled to one vote.
Common Stock
Class Of Stock [Line Items]
Convertible notes converted into shares of common stock		1,470,947
IPO | Common Stock
Class Of Stock [Line Items]
Number of shares issued in transaction	10,350,000
Shares issued price per share	$ 17.00
Net proceeds from initial public offering	$ 159,900,000
Underwriting discounts and commissions	12,300,000
Offering expenses	$ 3,700,000
Convertible notes converted into shares of common stock	1,470,947
Underwriters' Option to Purchase Additional Shares | Common Stock
Class Of Stock [Line Items]
Number of shares issued in transaction	1,350,000

[1] The balance sheet as of December 31, 2020 is derived from the audited financial statements as of that date