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Shareholders' Equity - Additional Information (Details) - USD ($) |  |  |  | 1 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Nov. 01, 2021 | Jun. 23, 2020 | May 26, 2020 | Jun. 30, 2020 | May 31, 2020 | Dec. 31, 2021 | Dec. 31, 2020 | Jan. 01, 2022
Class Of Stock [Line Items] |  |  |  |  |  |  |  |
Convertible preferred shares term |  |  |  |  |  | The Company’s Series A and Series B convertible preferred shares were convertible on a one-to-one basis into common shares. |  |
Preferred stock shares authorized |  |  |  |  |  | Unlimited | Unlimited |
Preferred stock shares issued |  |  |  |  |  | 0 | 0 |
Preferred stock shares outstanding |  |  |  |  |  | 0 | 0 |
Proceeds from issuance of warrant |  |  |  |  |  |  | $ 15,000,000 |
Common stock voting rights |  |  |  |  |  | Each common share entitles the holder to one vote on all matters submitted to the shareholders for a vote. |  |
Cash dividends declared or paid |  |  |  |  |  | $ 0 |  |
Net proceeds from issuance of common shares in initial public offering |  |  |  |  |  |  | $ 232,043,000 |
Net proceeds from issuance of common shares |  |  |  |  |  | $ 94,288,000 |  |
Common stock shares issued |  |  |  |  |  | 41,850,162 | 36,902,924 |
2020 Employee Share Purchase Plan |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |
Shares issued, price per share |  |  |  |  |  | $ 28.46 |  |
Shares of common stock reserved for future issuance |  |  |  |  |  |  |  | 1,104,588
Annual increase in number of shares available for issuance as percentage of outstanding shares common stock on final day of preceding calendar year |  |  |  | 1.00% |  |  |  |
Annual increase in number of shares available for issuance maximum number of common stock issued |  |  |  | 3,300,000 |  |  |  |
Purchase price of shares as percentage of fair market value of common stock on date of purchase |  |  |  | 85.00% |  |  |  |
Common stock shares issued |  |  |  | 0 |  | 9,943 |  |
Maximum | 2020 Employee Share Purchase Plan |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |
Shares of common stock reserved for future issuance |  |  |  | 327,000 |  |  |  |
Follow On Offering |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |
Underwriting Commissions And Estimated Offering Expenses | $ 800,000 |  |  |  |  |  |  |
Affiliate of Bristol Myers Squibb |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |
Proceeds from issuance of warrant |  |  | $ 15,000,000.0 |  | $ 15,000,000.0 |  |  |
Affiliate of Bristol Myers Squibb | Initial Public Offering |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |
Warrant exercise price per share |  | $ 20.00 |  |  |  |  |  |
Common Shares |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |
Convertible preferred shares converted into common shares |  | 21,558,393 |  | 21,558,393 |  |  |  |
Shares issued upon exercise of warrants outstanding |  | 750,000 |  |  |  |  |  |
Shares issued |  |  |  |  |  | 3,299 |  |
Shares issued, price per share |  | $ 20.00 |  |  |  |  |  |
Gross proceeds from IPO |  | $ 253,000,000 |  |  |  |  |  |
Net proceeds from issuance of common shares in initial public offering |  | $ 232,043,000 |  |  |  |  |  |
Common Shares | Initial Public Offering |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |
Shares issued |  | 12,650,000 |  |  |  |  | 12,650,000 |
Common Shares | Exercise of Underwriters Option |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |
Shares issued |  | 1,650,000 |  |  |  |  |  |
Common Shares | Exercise of Underwriters Option | Maximum |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |
Shares issued | 600,000 | 1,650,000 |  |  |  |  |  |
Common Shares | Follow On Offering |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |
Shares issued | 4,600,000 |  |  |  |  | 4,600,000 |  |
Shares issued, price per share | $ 22.00 |  |  |  |  |  |  |
Net proceeds from issuance of common shares | $ 94,300,000 |  |  |  |  |  |  |
Common Shares | Affiliate of Bristol Myers Squibb |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |
Shares issued upon exercise of warrants outstanding |  | 750,000 |  |  |  |  |  |

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