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Fair Value Measurements | 12 Months Ended
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Dec. 31, 2022
Fair Value Measurements |
Fair Value Measurements | 4. Fair Value Measurements The Company has certain financial assets recorded at fair value, which have been classified as Level 1, 2 or 3 within the fair value hierarchy as described in the accounting standards for fair value measurements. Level 1—Quoted market prices in active markets for identical assets or liabilities. Level 2—Inputs other than Level 1 inputs that are either directly or indirectly observable, such as quoted market prices, interest rates and yield curves. Level 3—Unobservable inputs developed using estimates of assumptions developed by the Company, which reflect those that a market participant would use. To the extent the valuation is based on models or inputs that are less observable or unobservable in the market, the determination of fair values requires more judgment. Accordingly, the degree of judgment exercised by the Company in determining fair value is greatest for instruments categorized as Level 3. A financial instrument’s level within the fair value hierarchy is based on the lowest level of any input that is significant to the fair value measurement. The following tables set forth the fair value of the Company’s financial assets by level within the fair value hierarchy as of December 31, 2022 and 2021: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, 2022
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Significant | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | Quoted Prices in | ​ | Other | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | Active Markets or | ​ | Observable | ​ | Significant
​ | ​ | ​ | ​ | ​ | Identical Assets | ​ | Inputs | ​ | Unobservable
(in thousands) |  | Total |  | (Level 1) |  | (Level 2) |  | (Level 3)
Cash equivalents: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Money market funds | ​ | $ | 6,782 | ​ | $ | 6,782 | ​ | $ | — | ​ | $ | —
Marketable securities: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Corporate bonds | ​ | ​ | 131,706 | ​ | ​ | — | ​ | ​ | 131,706 | ​ | ​ | —
U.S. Government agencies | ​ | ​ | 1,575 | ​ | ​ | — | ​ | ​ | 1,575 | ​ | ​ | —
Total | ​ | $ | 140,063 | ​ | $ | 6,782 | ​ | $ | 133,281 | ​ | $ | —
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, 2021
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Significant | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | Quoted Prices in | ​ | Other | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | Active Markets or | ​ | Observable | ​ | Significant
​ | ​ | ​ | ​ | ​ | Identical Assets | ​ | Inputs | ​ | Unobservable
(in thousands) |  | Total |  | (Level 1) |  | (Level 2) |  | (Level 3)
Cash equivalents: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Money market funds | ​ | $ | 2,680 | ​ | $ | 2,680 | ​ | $ | — | ​ | $ | —
Marketable securities: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Corporate bonds | ​ | ​ | 207,254 | ​ | ​ | — | ​ | ​ | 207,254 | ​ | ​ | —
Total | ​ | $ | 209,934 | ​ | $ | 2,680 | ​ | $ | 207,254 | ​ | $ | —
​ The Company did not transfer any assets measured at fair value on a recurring basis between levels during the years ended December 31, 2022 and 2021. The carrying value of financial instruments, including trade receivables, accounts payable and accrued liabilities approximate fair value because of the short-term maturity of these items. The estimated fair values may not represent actual values of the financial instruments that could be realized as of the balance sheet date or that will be realized in the future.

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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 -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258 + Details
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