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Fair Value Measurement | 9 Months Ended
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Sep. 30, 2021
Fair Value Measurement |
Fair Value Measurement |
3. | Fair Value Measurement
The Company assesses the fair value of financial instruments based on the provisions of ASC 820, Fair Value Measurements. ASC 820 defines fair value as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. ASC 820 also establishes a fair value hierarchy which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. The standard describes three levels of inputs that may be used to measure fair value:
● | Level 1 — Inputs are unadjusted quoted prices in active markets for identical assets or liabilities accessible to the reporting entity at the measurement date.
● | Level 2 — Inputs other than quoted prices included in Level 1 that are observable for the asset or liability, such as quoted prices for similar assets or liabilities, quoted prices in markets that are not active, or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities.
● | Level 3 — Unobservable inputs that are supported by little or no market activity that are significant to determining the fair value of the assets or liabilities, including pricing models, discounted cash flow methodologies and similar techniques.
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​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | September 30, 2021
(in thousands) |  | Level 1 | ​ | Level 2 | ​ | Level 3 | ​ | Total
Financial Assets | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Cash | ​ | $ | 10,874 | ​ | $ | — | ​ | $ | — | ​ | $ | 10,874
Money market funds | ​ | ​ | 14,723 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 14,723
Corporate bonds | ​ | ​ | — | ​ | ​ | 3,019 | ​ | ​ | — | ​ | ​ | 3,019
Commercial paper | ​ |  | — | ​ | ​ | 198,626 | ​ | ​ | — | ​ | ​ | 198,626
U.S. government treasury bills | ​ | ​ | 17,001 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 17,001
Government-sponsored enterprise securities | ​ |  | — | ​ | ​ | 61,711 | ​ | ​ | — | ​ | ​ | 61,711
Total | ​ | $ | 42,598 | ​ | $ | 263,356 | ​ | $ | — | ​ | $ | 305,954
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​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, 2021
​ |  | ​ | ​ |  | Gross |  | Gross |  | ​ | ​
​ | ​ | Amortized | ​ | Unrealized | ​ | Unrealized | ​ | Estimated
(in thousands) |  | Cost | ​ | Gains | ​ | Losses | ​ | Fair Value
Financial Assets | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Cash and cash equivalents | ​ | $ | 25,597 | ​ | $ | — | ​ | $ | — | ​ | $ | 25,597
Short-term marketable securities (<12 months to maturity) | ​ | ​ | 245,169 | ​ | ​ | 20 | ​ | ​ | (6) | ​ | ​ | 245,183
Long-term marketable securities (>12 months to maturity) | ​ |  | 35,173 | ​ |  | 4 | ​ |  | (3) | ​ | ​ | 35,174
Total | ​ | $ | 305,939 | ​ | $ | 24 | ​ | $ | (9) | ​ | $ | 305,954
​ The Company considers its marketable securities with maturities beyond one year as current assets, based on their highly liquid nature and because such marketable securities represent the investment of cash that is available for current operations. The Company considers its investment portfolio of marketable securities to be available-for-sale. As of December 31, 2020, all of the Company’s cash and cash equivalents consisted of cash on deposit with U.S. banks denominated in U. S. dollars.

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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 http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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