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Stock-Based Compensation - Narrative (Details) - USD ($) $ in Thousands, shares in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022 | Dec. 31, 2022
Class of Warrant or Right [Line Items] |  |  |  |  |
Options outstanding and exercisable, aggregate intrinsic value | $ 106,800 |  | $ 106,800 |  | $ 126,300
Options outstanding, aggregate intrinsic value | 130,000 |  | 130,000 |  | $ 185,300
Options exercised in the period, intrinsic value |  |  | 8,900 | $ 27,900 |
Unrecognized compensation cost | 12,400 |  | 12,400 |  |
Unrecognized stock-based compensation expense | $ 5,326 | $ 3,225 | $ 14,153 | $ 7,452 |
Employee stock purchase plan |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |
Shares available for grant (in shares) | 1.1 |  | 1.1 |  |
Unrecognized compensation cost | $ 1,200 |  | $ 1,200 |  |
2021 Equity Incentive Award Plan |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |
Shares available for grant (in shares) | 5.3 |  | 5.3 |  |
Average vesting period for unrecognized compensation cost (in years) |  |  | 4 months 24 days |  |
Restricted stock units |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |
Unrecognized stock-based compensation expense |  |  | $ 47,500 |  |

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- Definition Amount of cost not yet recognized for nonvested award under share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (i) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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- Definition Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (d)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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- Definition Amount by which current fair value of underlying stock exceeds exercise price of fully vested and expected to vest exercisable or convertible options. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (e)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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