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Fair Value Measurements (Tables) | 6 Months Ended
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Jun. 30, 2023
Fair Value Disclosures [Abstract] |
Schedule of Assets Measured at Fair Value on Recurring Basis | as of June 30, 2023 and December 31, 2022 (in thousands):
|  | June 30, 2023 |  | December 31, 2022
|  | Level 1 |  | Level 2 |  | Level 3 |  | Total |  | Level 1 |  | Level 2 |  | Level 3 |  | Total
Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash equivalents |  | $ | 19,478 |  |  | $ | — |  |  | $ | — |  |  | $ | 19,478 |  |  | $ | 27,668 |  |  | $ | — |  |  | $ | — |  |  | $ | 27,668 |
Marketable securities - available for sale |  | — |  |  | 33,936 |  |  | — |  |  | 33,936 |  |  | — |  |  | 37,072 |  |  | — |  |  | 37,072 |
|  | $ | 19,478 |  |  | $ | 33,936 |  |  | $ | — |  |  | $ | 53,414 |  |  | $ | 27,668 |  |  | $ | 37,072 |  |  | $ | — |  |  | $ | 64,740 |
The carrying values of accounts payable and accrued expenses approximate fair value as of June 30, 2023 and December 31, 2022, due to the short maturity nature of these items.

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