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Net Loss per Share - Antidilutive Potential Common Shares (Details) |  | 6 Months Ended
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Jul. 28, 2022 | Jun. 30, 2024 shares | Jun. 30, 2023 shares
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |
Antidilutive potential common stock (in shares) |  | 14,730,584 | 12,970,558
Metromile |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |
Conversion ratio | 0.05263 |  |
Options to purchase common stock |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |
Antidilutive potential common stock (in shares) |  | 9,988,565 | 9,264,477
Unvested restricted stock |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |
Antidilutive potential common stock (in shares) |  | 4,329,050 | 3,293,112
Warrants for common stock |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |
Antidilutive potential common stock (in shares) |  | 412,969 | 412,969

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- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482662/260-10-50-1 + Details
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