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Fair Value Measurements (Tables) | 9 Months Ended
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Sep. 30, 2024
Fair Value Measurements |
Schedule of fair value hierarchy of the Company's financial assets and liabilities measured at fair value on a recurring basis | The following table represents the fair value hierarchy of the Company’s financial assets and liabilities measured at fair value on a recurring basis at September 30, 2024 and December 31, 2023 (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, 2024 |
​ |  | Total |  | Level 1 |  | Level 2 |  | Level 3 |
Assets | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Money market funds⁽¹⁾ | ​ | $ | 19,401 | ​ | $ | 19,401 | ​ | ​ | — | ​ | ​ | — | ​
Commercial paper | ​ | ​ | 7,443 | ​ | ​ | — | ​ | ​ | 7,443 | ​ | ​ | — | ​
Government and agency securities | ​ | ​ | 39,932 | ​ | ​ | 39,932 | ​ | ​ | — | ​ | ​ | — | ​
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, 2023 |
​ |  | Total |  | Level 1 |  | Level 2 |  | Level 3 |
Assets | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Money market funds⁽¹⁾ | ​ | $ | 72,953 | ​ | $ | 72,953 | ​ | ​ | — | ​ | ​ | — | ​
Commercial paper | ​ | ​ | 7,598 | ​ | ​ | — | ​ | ​ | 7,598 | ​ | ​ | — | ​
Corporate debt securities | ​ | ​ | 7,982 | ​ | ​ | — | ​ | ​ | 7,982 | ​ | ​ | — | ​
Government and agency securities | ​ | ​ | 18,167 | ​ | ​ | 18,167 | ​ | ​ | — | ​ | ​ | — | ​
Liabilities | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Embedded features of the 2025 Notes | ​ | $ | 102 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 102 | ​
(1)Classified as cash and cash equivalents due to their short-term maturity
Schedule of changes in the fair value of Level 3 derivative liability measured at fair value | ​
​ | ​ | ​ | ​
​ | ​ | ​
​ | ​ | Level 3
​ |  | Instruments
December 31, 2023 | ​ | $ | 102
Gain on change in fair value of embedded features of the 2025 Notes | ​ | ​ | (102)
September 30, 2024 | ​ | $ | —
Schedule of assumptions used to determine fair value | ​
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​ | ​ | 2025 Notes | ​ | ​ | ​ |
Unobservable Inputs | ​ | Assumptions | ​ | ​ | ​ | ​
Stock price volatility |  | 45.0 | % | ​ | ​ | ​
Probabilities of conversion provisions |  | 10 - 90 | % | ​ | ​ | ​
Credit spread | ​ | 14.3 | % | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
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- Definition Tabular disclosure of input and valuation technique used to measure fair value and change in valuation approach and technique for each separate class of asset and liability measured on recurring and nonrecurring basis. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 103 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482078/820-10-55-103 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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- Definition Tabular disclosure of the fair value measurement of liabilities using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes 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 liability. + References Reference 1: 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 2: 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 3: 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 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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