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Stockholders' Equity - Shares Reserved For Future Issuance (Details) - shares shares in Thousands | Dec. 31, 2022 | Dec. 31, 2021
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Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Stock options outstanding (in shares) | 8,287 | 6,648
Shares available for future issuance (in shares) | 22,028 |
ESPP |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Shares available for future issuance (in shares) | 4,712 |
2019 Plan |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Shares available for future grant under 2019 Plan (in shares) | 5,986 |
2017 Nonqualified Employee Stock Purchase Plan | ESPP |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Shares available for future grant under 2019 Plan (in shares) | 3,000 |
Shares available for future issuance (in shares) | 3,043 |

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- Definition Aggregate number of common shares reserved for future issuance. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + 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 -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition Number of options outstanding, including both vested and non-vested options. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(ii) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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