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Fair Value Measurements | 3 Months Ended
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Mar. 31, 2024
Fair Value Disclosures [Abstract] |
Fair Value Measurements | Fair Value Measurements As of March 31, 2024 and December 31, 2023, the recorded values of cash and cash equivalents, restricted cash, accounts receivable and accounts payable approximate their respective fair values due to the short-term nature of the instruments. Cash and money market funds are classified within Level 1 of the fair value hierarchy. Highly liquid investments such as commercial papers and corporate bonds are classified within Level 2 of the fair value hierarchy. Assets measured at fair value on a recurring basis consisted of the following as of March 31, 2024 and December 31, 2023:
|  | Fair Value Measurements as of March 31, 2024
|  | Level 1 |  | Level 2 |  | Level 3 |  | Total
Assets: |  |  |  |  |  |  |  |
Cash equivalents: |  |  |  |  |  |  |  |
Money market funds |  | $ | 271,458 |  |  | $ | — |  |  | $ | — |  |  | 271,458 |
Available-for-sale investments |  |  |  |  |  |  |  |
Asset-backed securities |  | $ | — |  |  | $ | 447 |  |  | $ | — |  |  | 447 |
Total assets |  | $ | 271,458 |  |  | $ | 447 |  |  | $ | — |  |  | $ | 271,905 |
|  | Fair Value Measurements as of December 31, 2023
|  | Level 1 |  | Level 2 |  | Level 3 |  | Total
Assets: |  |  |  |  |  |  |  |
Cash equivalents: |  |  |  |  |  |  |  |
Money market funds |  | $ | 287,060 |  |  | $ | — |  |  | $ | — |  |  | $ | 287,060 |
Available-for-sale investments |  |  |  |  |  |  |  |
Asset-backed securities |  | — |  |  | 1,125 |  |  | — |  |  | 1,125 |
Total assets |  | $ | 287,060 |  |  | $ | 1,125 |  |  | $ | — |  |  | $ | 288,185 |
Available-for-Sale Investments Available-for-sale investments were classified within Level 1 or Level 2 because the Company uses quoted market prices or alternative pricing sources and models utilizing market observable inputs to determine their fair value. The market values of Level 2 investments are determined based on observable inputs for the securities other than quoted prices, such as interest rates, yield curves, and credit spreads, or quoted prices for identical or similar securities in markets that are not considered active. There were no transfers between levels during the periods presented.

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- References No definition available. + Details
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- Definition The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
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