Equity Incentive Plans, Equity Inducement Plans, Employee Stock Purchase Plan and Stock-Based Compensation - Schedule of Fair Value of ESPP Shares Using Option Pricing Model (Details) |
12 Months Ended | |
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Dec. 31, 2025 |
Dec. 31, 2024 |
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| Share Based Compensation Arrangement By Share Based Payment Award [Line Items] | ||
| Expected volatility, Minimum | 84.50% | 86.40% |
| Expected volatility, Maximum | 94.30% | 89.20% |
| Risk-free interest rate, Minimum | 3.50% | 3.50% |
| Risk-free interest rate, Maximum | 4.20% | 4.70% |
| Expected dividend | 0.00% | |
| 2018 Employee Stock Purchase Plan | ||
| Share Based Compensation Arrangement By Share Based Payment Award [Line Items] | ||
| Expected term (in years) | 6 months | 6 months |
| Expected volatility, Minimum | 104.80% | 88.40% |
| Expected volatility, Maximum | 130.30% | 93.70% |
| Risk-free interest rate, Minimum | 3.80% | 4.60% |
| Risk-free interest rate, Maximum | 4.30% | 5.50% |
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- Definition The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The estimated measure of the maximum percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The estimated measure of the minimum percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The maximum risk-free interest rate assumption that is used in valuing an option on its own shares. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The minimum risk-free interest rate assumption that is used in valuing an option on its own shares. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Details
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