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Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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Stockholders' Equity (Deficit) - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2021	Dec. 31, 2020	Oct. 31, 2021	Oct. 21, 2021
Subsidiary or Equity Method Investee [Line Items]
Common stock, shares authorized	100,000,000	100,000,000	144,406,928		100,000,000
Aggregate intrinsic value of common stock exercised		$ 1.8
Fair value of options vested		$ 6.0	$ 0.6
Weighted average grant date fair value		$ 8.18	$ 0.37
Unrecognized stock-based compensation expense	$ 8.9	$ 8.9
Repurchase of common stock		0	0
Shares subject to repurchase		377,709	136,032
Aggregate exercise prices of early exercised shares		$ 0.2	$ 0.1
Common stock, par value	$ 0.001	$ 0.001	$ 0.001	$ 0.001	$ 0.001
Preferred stock, shares authorized	5,000,000	5,000,000	0		5,000,000
Preferred stock, par value	$ 0.001	$ 0.001	$ 0.001		$ 0.001
Unrecognized stock-based compensation expense, weighted-average recognition period		2 years 7 months 6 days
Common stock, shares reserved for issuance	1,934,095	1,934,095	67,065
Dividend yield		0.00%	0.00%
Restricted Stock Units
Subsidiary or Equity Method Investee [Line Items]
Granted		394,750
Unrecognized stock-based compensation expense	$ 1.9	$ 1.9
Unrecognized stock-based compensation expense, weighted-average recognition period		1 year
ESPP
Subsidiary or Equity Method Investee [Line Items]
Number of shares authorized for offerings	0	0
Common stock, shares reserved for issuance				401,164
2008 Stock Plan
Subsidiary or Equity Method Investee [Line Items]
Share-based Compensation arrangement by share-based payment award, award vesting period		10 years
Share based compensation arrangement by share based payment award ratably thereafter vesting period		36 months
Percentage of vesting rights		25.00%
Vesting period		1 year
2021 Plan
Subsidiary or Equity Method Investee [Line Items]
Share-based Compensation arrangement by share-based payment award, award vesting period		10 years
Share based compensation arrangement by share based payment award ratably thereafter vesting period		36 months
Percentage of vesting rights		25.00%
Vesting period		1 year
Granted	394,750
Maximum [Member]
Subsidiary or Equity Method Investee [Line Items]
Aggregate intrinsic value of common stock exercised			$ 0.1
Incremental compensation cost			$ 0.1
Maximum [Member] \| 2008 Stock Plan
Subsidiary or Equity Method Investee [Line Items]
Exercise price, percent of estimated fair value of shares on date of grant		110.00%
Exercise price, percent of estimated fair market value of shares on date of grant		100.00%
Maximum [Member] \| 2021 Plan
Subsidiary or Equity Method Investee [Line Items]
Exercise price, percent of estimated fair value of shares on date of grant		110.00%
Exercise price, percent of estimated fair market value of shares on date of grant		100.00%
Minimum \| 2008 Stock Plan
Subsidiary or Equity Method Investee [Line Items]
Estimated fair value shares date of grant		10.00%
Minimum \| 2021 Plan
Subsidiary or Equity Method Investee [Line Items]
Estimated fair value shares date of grant		10.00%