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Fair Value Measurements (Tables) | 6 Months Ended
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Jun. 30, 2024
Fair Value Disclosures [Abstract] |
Summary of Assets and Liabilities Measured at Fair Value on Recurring Basis | The following table presents information about our assets and liabilities that are measured at fair value on a recurring basis, and indicates the fair value hierarchy of the valuation techniques we utilized to determine such fair value (in thousands):
June 30, 2024 |  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Total |
Assets |  |  |  |  |  |  |  |  |  |  |  |
Money market securities (cash equivalents) |  | $ | 14,466 |  |  | $ | — |  |  | $ | — |  |  | $ | 14,466 |
Restricted cash |  |  | 20 |  |  |  | — |  |  |  | — |  |  |  | 20 |
US government securities |  |  | — |  |  |  | 27,093 |  |  |  | — |  |  |  | 27,093 |
Corporate bonds |  |  | — |  |  |  | 18,478 |  |  |  | — |  |  |  | 18,478 |
Commercial paper |  |  | — |  |  |  | 986 |  |  |  | — |  |  |  | 986 |
Total assets |  | $ | 14,486 |  |  | $ | 46,557 |  |  | $ | — |  |  | $ | 61,043 |
Liabilities |  |  |  |  |  |  |  |  |  |  |  |
Convertible debt |  | $ | — |  |  |  | 17,585 |  |  | $ | — |  |  | $ | 17,585 |
Contingent consideration |  |  | — |  |  |  | — |  |  |  | 637 |  |  |  | 637 |
Total liabilities |  | $ | — |  |  | $ | 17,585 |  |  | $ | 637 |  |  | $ | 18,222 |
Summary of Cash Equivalents | Cash equivalents consist of the following (in thousands):
|  |  |  |  | Gross |  |  | Gross |  |  |  |
|  | Amortized |  |  | Unrealized |  |  | Unrealized |  |  | Estimated |
June 30, 2024 |  | Cost |  |  | Gains |  |  | Losses |  |  | Fair Value |
Money market securities |  | $ | 14,466 |  |  | $ | — |  |  | $ | — |  |  | $ | 14,466 |
Total cash equivalents |  | $ | 14,466 |  |  | $ | — |  |  | $ | — |  |  | $ | 14,466 |
Money market securities (restricted cash) |  | $ | 20 |  |  | $ | — |  |  | $ | — |  |  | $ | 20 |
Total restricted cash |  | $ | 20 |  |  | $ | — |  |  | $ | — |  |  | $ | 20 |
Schedule of Corporate Bonds and Commercial Paper |
|  |  |  |  | Gross |  |  | Gross |  |  |  |
|  | Amortized |  |  | Unrealized |  |  | Unrealized |  |  | Estimated |
June 30, 2024 |  | Cost |  |  | Gains |  |  | Losses |  |  | Fair Value |
US government securities |  | $ | 27,100 |  |  | $ | — |  |  | $ | (7 | ) |  | $ | 27,093 |
Corporate bonds |  |  | 18,482 |  |  |  | — |  |  |  | (4 | ) |  |  | 18,478 |
Commercial paper |  |  | 986 |  |  |  | — |  |  |  | — |  |  |  | 986 |
Total short term investments |  | $ | 46,568 |  |  | $ | — |  |  | $ | (11 | ) |  | $ | 46,557 |
Schedule of Aggregate Fair Value of Principal Amount of Convertible Debt | The aggregate fair value of the principal amount of the convertible debt is a Level 2 fair value measurement.
|  | June 30, 2024 |  |  | December 31, 2023 |
|  | Principal |  |  | Carrying |  |  | Fair |  |  | Principal |  |  | Carrying |  |  | Fair |
|  | Amount |  |  | Value |  |  | Value |  |  | Amount |  |  | Value |  |  | Value |
December 2021 Convertible Debt |  | $ | 15,000 |  |  | $ | 17,608 |  |  | $ | 17,585 |  |  | $ | 15,000 |  |  | $ | 16,662 |  |  | $ | 16,652 |
As of June 30, 2024 and December 31, 2023, the Convertible Term Loan balance, including the Convertible Debt balance, was comprised of the following:
| June 30, |  |  | December 31, |
| 2024 |  |  | 2023 |
Convertible Term Loan Information |  |  |  |  |
Principal | $ | 15,000 |  |  | $ | 15,000 |
Transaction Costs |  | (5 | ) |  |  | (5 | )
Accrued paid-in-kind interest |  | 2,935 |  |  |  | 2,311 |
Discount on modification of debt |  | (1,074 | ) |  |  | (1,074 | )
Accretion of discount on modification of debt |  | 752 |  |  |  | 430 |
|  | 17,608 |  |  |  | 16,662 |
Schedule of Changes in Fair Value of Liabilities | The following table presents the changes in fair value of our total Level 3 financial liabilities for the six months ended June 30, 2024:
|  | Balance at |  |  | Change in |  |  | Balance at |
(in thousands) |  | December 31, 2023 |  |  | Fair Value |  |  | June 30, 2024 |
Contingent consideration |  | $ | 528 |  |  | $ | 109 |  |  | $ | 637 |

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- Definition Tabular disclosure of assets, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, by class 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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- 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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