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Fair Value Measurement (Tables) | 9 Months Ended
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Sep. 30, 2023
Fair Value Disclosures [Abstract] |
Schedule of Fair Value, by Balance Sheet Grouping | The following tables summarize financial assets and liabilities measured and recorded at fair value on a recurring basis in the accompanying consolidated balance sheets as of September 30, 2023 and December 31, 2022, segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value:
| September 30, 2023
| Quoted Prices in Active Markets for Identical Assets (Level 1 Inputs) |  | Significant Other Observable Inputs (Level 2 Inputs) |  | Significant Unobservable Inputs (Level 3 Inputs) |  | Total
Assets: |  |  |  |  |  |  |
Money market funds | $ | 41,189 |  |  | $ | — |  |  | $ | — |  |  | $ | 41,189 |
U.S. treasury securities | — |  |  | 188,882 |  |  | — |  |  | 188,882 |
Convertible debt securities (See Note 7) | — |  |  | — |  |  | 4,304 |  |  | 4,304 |
Total assets | $ | 41,189 |  |  | $ | 188,882 |  |  | $ | 4,304 |  |  | $ | 234,375 |
| December 31, 2022
| Quoted Prices in Active Markets for Identical Assets (Level 1 Inputs) |  | Significant Other Observable Inputs (Level 2 Inputs) |  | Significant Unobservable Inputs (Level 3 Inputs) |  | Total
Assets: |  |  |  |  |  |  |
Money market funds | $ | 36,222 |  |  | $ | — |  |  | $ | — |  |  | $ | 36,222 |
U.S. treasury securities | — |  |  | 153,501 |  |  | — |  |  | 153,501 |
Corporate securities | — |  |  | 4,273 |  |  | — |  |  | 4,273 |
Convertible debt securities (See Note 7) | — |  |  | — |  |  | 3,652 |  |  | 3,652 |
Total assets | $ | 36,222 |  |  | $ | 157,774 |  |  | $ | 3,652 |  |  | $ | 197,648 |
Liabilities: |  |  |  |  |  |  |
Contingent consideration | $ | — |  |  | $ | — |  |  | $ | 227 |  |  | $ | 227 |
Total liabilities | $ | — |  |  | $ | — |  |  | $ | 227 |  |  | $ | 227 |
Schedule of Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation | A rollforward of the fair value measurements of the convertible notes for the nine months ended September 30, 2023 and 2022, is as follows:
Balance as of December 31, 2022 | $ | 3,652 |
Additional investment in convertible notes | 323 |
Change in fair value included in other income, net | 134 |
Balance as of March 31, 2023 | 4,109 |
Change in fair value included in other income, net | 246 |
Balance as of June 30, 2023 | 4,355 |
Change in fair value included in other income, net | (51) |
Balance as of September 30, 2023 | $ | 4,304 |
Balance as of December 31, 2021 | $ | 500 |
Additional investment in convertible notes | 2,000 |
Change in fair value included in other income, net | 661 |
Balance as of March 31, 2022 | 3,161 |
Change in fair value included in other income, net | 367 |
Balance as of June 30, 2022 | 3,528 |
Change in fair value included in other income, net | (139) |
Balance as of September 30, 2022 | $ | 3,389 |
Schedule of Fair Value Measurement Inputs and Valuation Techniques | The following table represents the key inputs used in the fair value calculation:
|  | December 31, 2022
Risk free interest rate |  | 4.72 | %
Projected year of payment |  | 2023
Revenue volatility |  | 20.1 | %
Discount rate |  | 9.72 | %
Schedule of Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation | A rollforward of the fair value measurements of the contingent consideration liability for the nine months ended September 30, 2023 and 2022 is as follows:
Balance as of December 31, 2022 | $ | 227 |
Change in fair value and expense recognized for service period rendered | (36) |
Balance as of March 31, 2023 | 191 |
Change in fair value and expense recognized for service period rendered | 4 |
Balance as of June 30, 2023 | 195 |
Change in fair value and expense recognized for service period rendered | 28 |
Payments made | (223) |
Balance as of September 30, 2023 | $ | — |
Balance as of December 31, 2021 | $ | 424 |
Change in fair value and expense recognized for service period rendered | 106 |
Balance as of March 31, 2022 | 530 |
Change in fair value and expense recognized for service period rendered | (141) |
Balance as of June 30, 2022 | 389 |
Change in fair value and expense recognized for service period rendered | (149) |
Balance as of September 30, 2022 | $ | 240 |

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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://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c) -SubTopic 10 -Topic 820 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-3 + 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://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c) -SubTopic 10 -Topic 820 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-3 + Details
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