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Fair Value Measurements | 6 Months Ended
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Jun. 30, 2023
Fair Value Disclosures [Abstract] |
Fair Value Measurements | (19) Fair Value Measurements Fair value is the exchange price to sell an asset or transfer a liability (an exit price) in an orderly transaction between market participants at the measurement date. Fair value measurements use market data or assumptions market participants would use in pricing the asset or liability, including assumptions about risk and the risks inherent in the inputs to the valuation technique. These inputs may be readily observable, corroborated by market data, or generally unobservable. Valuation techniques maximize the use of observable inputs and minimize use of unobservable inputs. The accounting guidance for fair value measurements and disclosures establishes a three-level fair value hierarchy: •Level 1 - Inputs are based on quoted prices in active markets for identical assets and liabilities. •Level 2 - Inputs are based on observable inputs other than quoted prices in active markets for identical or similar assets and liabilities. •Level 3 - One or more inputs are unobservable and significant. Financial and nonfinancial assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement. Cash equivalents and short-term investments are valued utilizing the market approach to measure fair value for financial assets and liabilities. The market approach uses prices and other relevant information generated by market transactions involving identical or comparable assets or liabilities. The carrying amounts of our cash and cash equivalents, accounts receivable, accounts payable, and accrued liabilities approximate fair value as of June 30, 2023 and December 31, 2022 because of the relatively short duration of these instruments. Assets measured at fair value on a recurring basis as of June 30, 2023 are summarized below:
| Fair Value Measurement as of June 30, 2023
| Fair Value Measurement |  | Balance Sheet Classification
(in thousands) | Fair Value Level |  | Cost Basis |  | Unrealized Gains (Losses) |  | Fair Value |  | Cash and Cash Equivalents |  | Short-term Investments |  |
Money market funds | Level 1 |  | $ | 417,486 |  |  | $ | — |  |  | $ | 417,486 |  |  | $ | 417,486 |  |  | $ | — |  |  |
Corporate bonds | Level 2 |  | 1,135 |  |  | — |  |  | 1,135 |  |  | — |  |  | 1,135 |  |  |
Total |  |  | $ | 418,621 |  |  | $ | — |  |  | $ | 418,621 |  |  | $ | 417,486 |  |  | $ | 1,135 |  |  |
We did not have any transfers of assets or liabilities between Level 1, Level 2 and Level 3 of the fair value measurement hierarchy during the three or six months ended June 30, 2023. Assets measured at fair value on a recurring basis as of December 31, 2022 are summarized below:
| Fair Value Measurement as of December 31, 2022
| Fair Value Measurement |  | Balance Sheet Classification
(in thousands) | Fair Value Level |  | Cost Basis |  | Unrealized Gains (Losses) |  | Fair Value |  | Cash and Cash Equivalents |  | Short-term Investments |  |
Money market funds | Level 1 |  | $ | 232,018 |  |  | $ | — |  |  | $ | 232,018 |  |  | $ | 232,018 |  |  | $ | — |  |  |
Certificates of deposit | Level 2 |  | 990 |  |  | 6 |  |  | 996 |  |  | — |  |  | 996 |  |  |
Commercial paper | Level 2 |  | 1,281 |  |  | 6 |  |  | 1,287 |  |  | — |  |  | 1,287 |  |  |
Short-term bond mutual funds | Level 2 |  | 100,242 |  |  | (99) |  |  | 100,143 |  |  | — |  |  | 100,143 |  |  |
Corporate bonds(a) | Level 2 |  | 78,418 |  |  | (241) |  |  | 78,177 |  |  | — |  |  | 78,177 |  |  |
Total |  |  | $ | 412,949 |  |  | $ | (328) |  |  | $ | 412,621 |  |  | $ | 232,018 |  |  | $ | 180,603 |  |  |
(a) Includes $745 and $743 of cost basis and fair market value, respectively, with a weighted average maturity of 1.3 years.

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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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