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Equity Incentive Plans (Tables) | 12 Months Ended
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Dec. 31, 2021
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] |
Summary of Stock Option Activity |
|  | Number of Shares |  |  | Weighted-Average Exercise Price |  |  | Weighted-Average Contractual Term (in years) |  |  | Average Intrinsic Value (in thousands) |
Outstanding, December 31, 2020 |  |  | 3,137,776 |  |  | $ | 0.94 |  |  |  | 6.8 |  |  | $ | 18,656 |
Grants |  |  | 2,487,253 |  |  |  | 11.35 |  |  |  |  |  |  |
Forfeited/cancelled |  |  | (150,520 | ) |  |  | 3.77 |  |  |  |  |  |  |
Exercised |  |  | (477,564 | ) |  |  | 0.78 |  |  |  |  |  |  |
Outstanding, December 31, 2021 |  |  | 4,996,945 |  |  | $ | 6.05 |  |  |  | 7.6 |  |  | $ | 58,420 |
Vested and exercisable as of December 31, 2021 |  |  | 2,098,249 |  |  | $ | 2.22 |  |  |  | 5.6 |  |  | $ | 32,268 |
Vested and expected to vest as of December 31, 2021 |  |  | 4,963,575 |  |  | $ | 6.09 |  |  |  | 7.6 |  |  | $ | 57,895 |
Summary of Weighted Average Valuation Assumptions Used to Estimate Fair Value of Employee Stock Options | The Company estimated the fair value of stock options using the Black-Scholes option-pricing model. The fair value of stock options is recognized on a straight-line basis over the requisite service periods of the awards. The fair value of stock options was estimated using the following weighted-average assumptions:
|  | Years ended December 31,
|  | 2021 |  | 2020
Expected term (in years) |  | 4.99 – 6.18 |  | 5.85-6.08
Expected volatility |  | 56.74% – 61.08% |  | 48.27%-55.64%
Risk-free interest rate |  | 0.47% – 1.33% |  | 0.33%-1.77%
Dividend yield |  | – |  | –
Summary of restricted share award activity | The following table summarizes restricted share award activity:
|  | Number of Shares |  |  | Weighted-Average Grant Date Fair Value Per Share |
Outstanding, December 31, 2020 |  |  | — |  |  | $ | — |
Grants |  |  | 53,250 |  |  |  | 22.91 |
Forfeited/cancelled |  |  | — |  |  |  | — |
Vested |  |  | — |  |  |  | — |
Outstanding, December 31, 2021 |  |  | 53,250 |  |  | $ | 22.91 |
Summary of Stock-Based Compensation Expense by Function | The following is a summary of stock-based compensation expense by function (in thousands):
|  | Years Ended December 31, |
|  | 2021 |  |  | 2020 |
Cost of goods sold |  | $ | 71 |  |  | $ | 20 |
Research and development |  |  | 495 |  |  |  | 84 |
Selling, general and administrative |  |  | 4,517 |  |  |  | 393 |
Total stock-based compensation expense |  | $ | 5,083 |  |  | $ | 497 |

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- Definition Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=122041274&loc=d3e301413-122809 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901 + Details
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- Definition Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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