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Fair Value of Financial Assets and Liabilities (Tables) | 6 Months Ended
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Jun. 30, 2024
Fair Value of Financial Assets and Liabilities |
Schedule of financial assets and liabilities measured at fair value on a recurring basis | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Fair Value Measurements as of
​ | ​ | June 30, 2024 using:
​ |  | Level 1 |  | Level 2 |  | Level 3 |  | Total
Assets: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Cash equivalents: |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
Commercial Paper | ​ | $ | — | ​ | $ | 51,230 | ​ | $ | — | ​ | $ | 51,230
Money market funds | ​ | $ | 98,254 | ​ | $ | — | ​ | $ | — | ​ | $ | 98,254
Marketable securities: | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
Corporate debt securities and commercial paper | ​ | ​ | — | ​ | ​ | 157,461 | ​ | ​ | — | ​ | ​ | 157,461
Total | ​ | $ | 98,254 | ​ | $ | 208,691 | ​ | $ | — | ​ | $ | 306,945
Liabilities: | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
Derivative liability | ​ | $ | — | ​ | $ | — | ​ | $ | 360 | ​ | $ | 360
Total | ​ | $ | — | ​ | $ | — | ​ | $ | 360 | ​ | $ | 360
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Fair Value Measurements as of
​ | ​ | December 31, 2023 using:
​ |  | Level 1 |  | Level 2 |  | Level 3 |  | Total
Assets: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Cash equivalents: |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
Commercial paper | ​ | $ | — | ​ | $ | — | ​ | $ | — | ​ | $ | —
Money market funds | ​ |  | 40,868 | ​ |  | 4,979 | ​ |  | — | ​ |  | 45,847
Marketable securities: | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
Corporate debt securities and commercial paper | ​ | ​ | — | ​ | ​ | 215,765 | ​ | ​ | — | ​ | ​ | 215,765
Total | ​ | $ | 40,868 | ​ | $ | 220,744 | ​ | $ | — | ​ | $ | 261,612
Liabilities: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Derivative liability | ​ | $ | — | ​ | $ | — | ​ | $ | 1,150 | ​ | $ | 1,150
Total | ​ | $ | — | ​ | $ | — | ​ | $ | 1,150 | ​ | $ | 1,150
Schedule of changes in the estimated fair value of Level 3 securities | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Six months ended
​ | ​ | June 30,
​ |  | 2024 | ​ | 2023
Beginning aggregate estimated fair value of Level 3 liabilities | ​ | $ | 1,150 | ​ | $ | 1,340
Change in fair value of embedded derivative | ​ | ​ | (790) | ​ | ​ | (20)
Fair value of forward contract - Series A Convertible Preferred Stock | ​ | ​ | 8,900 | ​ | ​ | —
Settlement of forward contract | ​ | ​ | (8,900) | ​ | ​ | —
Ending aggregate estimated fair value of Level 3 liabilities | ​ | $ | 360 | ​ | $ | 1,320
Schedule of marketable securities | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | June 30, 2024
​ | ​ | ​ | ​ | ​ | Gross | ​ | Gross | ​ | ​ | ​
​ | ​ | Amortized | ​ | Unrealized | ​ | Unrealized | ​ | Fair
​ |  | Cost |  | Gains |  | Losses |  | Value
Assets | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Corporate debt securities and commercial paper (due within 1 year) | ​ | $ | 157,565 | ​ | $ | 10 | ​ | $ | (115) | ​ | $ | 157,460
​ | ​ | $ | 157,565 | ​ | $ | 10 | ​ | $ | (115) | ​ | $ | 157,460
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, 2023
​ | ​ | ​ | ​ | ​ | Gross | ​ | Gross | ​ | ​ | ​
​ | ​ | Amortized | ​ | Unrealized | ​ | Unrealized | ​ | Fair
​ |  | Cost |  | Gains |  | Losses |  | Value
Assets | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Corporate debt securities and commercial paper (due within 1 year) | ​ | $ | 215,490 | ​ | $ | 282 | ​ | $ | (7) | ​ | $ | 215,765
​ | ​ | $ | 215,490 | ​ | $ | 282 | ​ | $ | (7) | ​ | $ | 215,765
​

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- Definition Tabular disclosure of the fair value measurement of assets using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets) and gains or losses recognized in other comprehensive income (loss), and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs), by class of asset. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 101 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482078/820-10-55-101 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-3 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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- Definition Tabular disclosure of the reconciliation of available-for-sale securities from cost basis to fair value. + 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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