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Fair Value Measurements - Recurring (Details) - USD ($) $ in Thousands | 9 Months Ended |
--- | --- | ---
Sep. 30, 2024 | Dec. 31, 2023
Fair Value Measurements |  |
Cash and cash equivalents | $ 27,106 | $ 75,709
Marketable securities | 47,375 | 33,747
Derivative liabilities |  | 102
2025 Notes |  |
Fair Value Measurements |  |
Derivative liabilities | 0 | 100
Reconciliation of items measured at fair value on a recurring basis that used significant unobservable inputs (Level 3) |  |
Balance at the beginning of the period | 102 |
(Gain) Loss on change in fair value of derivatives | $ (102) |
Fair Value, Liability, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] | Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Change in Unrealized Gain (Loss) |
Recurring | Embedded conversion option | 2025 Notes |  |
Fair Value Measurements |  |
Derivative liabilities |  | 102
Recurring | Money market funds |  |
Fair Value Measurements |  |
Cash and cash equivalents | $ 19,401 | 72,953
Recurring | Commercial paper |  |
Fair Value Measurements |  |
Marketable securities | 7,443 | 7,598
Recurring | Corporate debt securities |  |
Fair Value Measurements |  |
Marketable securities |  | 7,982
Recurring | Government and agency securities |  |
Fair Value Measurements |  |
Marketable securities | 39,932 | 18,167
Recurring | Level 1 | Money market funds |  |
Fair Value Measurements |  |
Cash and cash equivalents | 19,401 | 72,953
Recurring | Level 1 | Government and agency securities |  |
Fair Value Measurements |  |
Marketable securities | 39,932 | 18,167
Recurring | Level 2 | Commercial paper |  |
Fair Value Measurements |  |
Marketable securities | $ 7,443 | 7,598
Recurring | Level 2 | Corporate debt securities |  |
Fair Value Measurements |  |
Marketable securities |  | 7,982
Recurring | Level 3 | Embedded conversion option | 2025 Notes |  |
Fair Value Measurements |  |
Derivative liabilities |  | $ 102

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