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Gross number of share options (or share units) granted during the period.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Stock-Based Compensation - Additional Information (Details) - USD ($)				3 Months Ended	4 Months Ended	12 Months Ended
	Sep. 16, 2020	Sep. 02, 2020	Jul. 01, 2020	Mar. 31, 2021	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Jan. 01, 2022	Jan. 01, 2021	Jul. 02, 2020
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Fair value of common stock per share			$ 5.28
Stock-based compensation expense						$ 18,184,000	$ 3,354,000
Construction in Progress
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expense						$ 400,000
Series B Convertible Preferred Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Preferred stock, issuing price per share										$ 17.00
Employee Stock Purchase Plan (ESPP)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock reserved for future issuance	724,000							384,739
Share-based payment award, expiration period	10 years
Share-based payment award, expiration date	Jan. 01, 2030
Percentage of automatic increase every year in common stock shares reserved for future issuance	1.00%
Share-based payment award, terms of award issuance						the number of shares of common stock that are automatically added on January 1st of each year for a period of up to ten years, commencing on the first January 1 following the IPO Date and ending on (and including) January 1, 2030, in an amount equal to the lesser of (i) one percent (1.0%) of the total number of shares of capital stock outstanding on December 31st of the preceding calendar year, and (ii) 724,000 shares of common stock.
Number of shares of common stock issued under ESPP	0					0
Restricted Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares awarded							2,518,932
Share-based payment award, compensation cost not yet recognized, weighted-average period of recognition						1 year 6 months
Share-based payment award, RSU/RSA granted							331,121
Share-based payment award, unvested RSU/RSA granted, compensation cost not yet recognized						$ 10,700,000
Share-based payment award, RSU/RSA granted, weighted average grant date fair value							$ 14.90
Stock Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based payment award, expiration period						10 years	10 years
Share-based payment award, options granted						3,192,600	674,842
Share-based payment award, options granted, exercise price per share						$ 24.99	$ 20.68
Stock options were exercised during the period						$ 0
Share-based payment award, options, compensation cost not yet recognized						$ 44,700,000
Share-based payment award, compensation cost not yet recognized, weighted-average period of recognition						3 years 1 month 6 days
Restricted Stock Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based payment award, compensation cost not yet recognized, weighted-average period of recognition						7 months 6 days
Share-based payment award, RSU/RSA granted							769,058
Share-based payment award, unvested RSU/RSA granted, compensation cost not yet recognized						$ 1,800,000
Share-based payment award, RSU/RSA granted, weighted average grant date fair value			$ 5.28				$ 5.28
Maximum \| Employee Stock Purchase Plan (ESPP)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares authorized for issuance	362,000
Maximum \| Stock Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award vesting period						4 years	4 years
Minimum [Member] \| Stock Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award vesting period						1 year	3 years
2020 Equity Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock reserved for future issuance	209,841
Share-based payment award, plan modification, incremental cost				$ 0
2020 Equity Incentive Plan \| Cancelled Options \| Certain Employees and Consultants
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based payment award, options granted			2,896,782
Share-based payment award, options granted, exercise price per share			$ 0.80
Award vesting period			4 years
Share-based payment award, options grant date fair value			$ 13,800,000
2020 Equity Incentive Plan \| Restricted Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award vesting period		4 years
Number of shares awarded		2,518,932
Share-based payment award, RSU/RSA granted		331,121
2020 Equity Incentive Plan \| Restricted Stock Units \| Share-based Payment Arrangement, Tranche One
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based payment award, vesting rights percentage		25.00%
2020 Equity Incentive Plan \| Restricted Stock Units \| Share-based Payment Arrangement, Tranche Two
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based payment award, vesting rights percentage		25.00%
2020 Equity Incentive Plan \| Restricted Stock Units \| Share-based Payment Arrangement, Tranche Three
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based payment award, vesting rights percentage		25.00%
2020 Equity Incentive Plan \| Restricted Stock Units \| Share-based Payment Arrangement, Tranche Four
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based payment award, vesting rights percentage		25.00%
2020 Equity Incentive Plan \| Stock Options \| Directors
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based payment award, options granted		16,342
Share-based payment award, options granted, exercise price per share		$ 14.90
2020 Equity Incentive Plan \| Restricted Stock Awards \| RA Session II
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based payment award, RSU/RSA granted			769,058
Award requisite service vesting period			3 years
2020 Equity Incentive Plan \| Common Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares authorized for issuance	3,845,294		3,529,412
New Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock reserved for future issuance	3,390,168							1,923,697	1,434,934
Share-based payment award, expiration period	10 years
Share-based payment award, commencement date	Jan. 01, 2021
Share-based payment award, expiration date	Jan. 01, 2030
Percentage of automatic increase every year in common stock shares reserved for future issuance	5.00%
Share-based payment award, terms of award issuance						The number of shares of common stock reserved for issuance under the New Plan will automatically increase on January 1 of each year, for a period of ten years, from January 1, 2021 continuing through January 1, 2030, by 5% of the total number of shares of common stock outstanding on December 31 of the preceding calendar year, or a lesser number of shares as may be determined by the Company’s board of directors.
New Plan \| Stock Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based payment award, options granted					658,500	3,192,600
Share-based payment award, options granted, exercise price per share					$ 20.83
Share-based payment award, options, weighted-average grant date fair value						$ 16.33