Stockholders' Equity (Stock-Based Compensation Expense Narrative) (Details) - USD ($) $ in Thousands, shares in Millions |
3 Months Ended | |
|---|---|---|
Mar. 31, 2025 |
Mar. 31, 2024 |
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| Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] | ||
| Stock-based compensation expense | $ 6,289 | $ 4,857 |
| Stock options, unrecognized compensation expense | 0 | 400,000 |
| Research and development expenses | ||
| Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] | ||
| Stock-based compensation expense | 1,300 | 1,100 |
| General and administrative expenses | ||
| Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] | ||
| Stock-based compensation expense | $ 4,900 | $ 3,700 |
| 2013 Plan | ||
| Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] | ||
| Stock based compensation, shares available for issuance | 10.0 | |
| 2012 Employee Stock Purchase Plan | ||
| Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] | ||
| Stock based compensation, shares available for issuance | 1.0 | |
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- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of cost to be recognized for option under share-based payment arrangement. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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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 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. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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