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Fair Value Measurements (Tables) | 9 Months Ended
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Sep. 30, 2025
Fair Value Measurements |
Schedule of Financial Assets and Liabilities Measured on a Recurring Basis |
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​ | ​ | Fair Value Measurements
​ | ​ | September 30, 2025
(in thousands) |  | Level 1 |  | Level 2 |  | Level 3 |  | Total
Financial Assets: |  | ​ | ​ |  | ​ |  |  | ​ |  |  | ​ |
Cash equivalents(1) | ​ | $ | 103,228 | ​ | $ | — | ​ | $ | — | ​ | $ | 103,228
Marketable debt securities: | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​
U.S. government agency securities | ​ | ​ | 3,773 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 3,773
U.S. treasury securities | ​ | ​ | 45,419 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 45,419
Commercial paper and corporate notes | ​ | ​ | — | ​ | ​ | 39,119 | ​ | ​ | — | ​ | ​ | 39,119
Total | ​ | $ | 152,420 | ​ | $ | 39,119 | ​ | $ | — | ​ | $ | 191,539
Financial Liabilities: | ​ |  | ​ | ​ |  |  | ​ |  |  | ​ |  |
Royalty Fee Derivative Liability | ​ | $ | — | ​ | $ | — | ​ | $ | 1,490 | ​ | $ | 1,490
Contingent consideration | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 102 | ​ | ​ | 102
Total | ​ | $ | — | ​ | $ | — | ​ | $ | 1,592 | ​ | $ | 1,592
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​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Fair Value Measurements
​ | ​ | December 31, 2024
(in thousands) |  | Level 1 |  | Level 2 |  | Level 3 |  | Total
Financial Assets: |  | ​ | ​ |  | ​ |  |  | ​ |  |  | ​ |
Cash equivalents(1) | ​ | $ | 125,549 | ​ | $ | — | ​ | $ | — | ​ | $ | 125,549
Financial Liabilities: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Royalty Fee Derivative Liability | ​ | $ | — | ​ | $ | — | ​ | $ | 13,620 | ​ | $ | 13,620
Contingent consideration | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 632 | ​ | ​ | 632
Total | ​ | $ | — | ​ | $ | — | ​ | $ | 14,252 | ​ | $ | 14,252
| (1) | Cash equivalents may include the following: money market funds, U.S. treasury securities, commercial paper or corporate notes with original maturities of 90 days or less.
Schedule of Cash and cash equivalents, marketable securities and restricted cash | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, 2025
(in thousands) |  | Cost |  | Unrealized Gain |  | Unrealized (Loss) |  | Fair Value
Money market funds | ​ | $ | 92,289 | ​ | $ | — | ​ | $ | — | ​ | $ | 92,289
U.S. government agency securities | ​ | ​ | 6,748 |  | ​ | 4 | ​ | ​ | — | ​ | ​ | 6,752
U.S. treasury securities | ​ | ​ | 53,347 | ​ | ​ | 33 | ​ | ​ | (1) | ​ | ​ | 53,379
Commercial paper and corporate notes | ​ | ​ | 39,083 | ​ | ​ | 37 | ​ | ​ | (1) | ​ | ​ | 39,119
Total | ​ | $ | 191,467 |  | $ | 74 | ​ | $ | (2) | ​ | $ | 191,539
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​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, 2024
(in thousands) |  | Cost |  | Unrealized Gain |  | Unrealized (Loss) |  | Fair Value
Money market funds | ​ | $ | 125,549 | ​ | $ | — | ​ | $ | — | ​ | $ | 125,549

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- Definition Tabular disclosure of cash, cash equivalent, and investment. + References No definition available. + Details
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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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