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Fair Value Measurements | 12 Months Ended
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Dec. 31, 2020
Fair Value Disclosures [Abstract] |
Fair Value Measurements | 3. Fair Value Measurements The following table presents information about the Company’s financial assets and liabilities measured at fair value on a recurring basis and indicates the level of the fair value hierarchy utilized to determine such fair values as of December 31, 2020:
Description |  | December 31, 2020 |  |  | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |  | Significant Other Observable Inputs (Level 2) |  |  | Significant Other Observable Inputs (Level 3) |
|  | (in thousands) |
Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash equivalents |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Money market funds |  | $ | 2,455 |  |  | $ | 2,455 |  |  | $ | — |  |  | $ | — |
Marketable securities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury notes |  |  | 7,526 |  |  |  | 7,526 |  |  |  | — |  |  |  | — |
Total financial assets |  | $ | 9,981 |  |  | $ | 9,981 |  |  | $ | — |  |  | $ | — |
When developing fair value estimates, the Company maximizes the use of observable inputs and minimizes the use of unobservable inputs. When available, the Company uses quoted market prices to measure the fair value. The valuation technique used to measure fair value for the Company’s Level 1 assets is a market approach, using prices and other relevant information generated by market transactions involving identical or comparable assets. If market prices are not available, the fair value measurement is based on models that use primarily market-based parameters including yield curves, volatilities, credit ratings and currency rates. In certain cases where market rate assumptions are not available, the Company is required to make judgements about assumptions market participants would use to estimate the fair value of a financial instrument. During the year ended December 31, 2020, there were no transfers between fair value measure levels. The Company had no financial assets and liabilities measured at fair value as of December 31, 2019. Series A Preferred Share Tranche Obligation The Company determined that its obligation to issue, and the Company’s investors’ obligation to purchase, additional Series A Preferred Shares at a fixed price (i.e., the issuance price) in subsequent tranches following the initial closing of the Series A Preferred Share financing represented a freestanding financial instrument, the Series A Preferred Share Tranche Obligation. The freestanding financial instrument was classified as an asset or liability on the Company’s consolidated balance sheets and initially recorded at fair value, with changes in fair value for each reporting period recognized in other income (expense), net in the consolidated statements of operations and comprehensive loss (Note 9). In connection with the Company’s issuance of the Series A Preferred Shares in June 2017 (Note 9), the Company recognized the Series A Preferred Share Tranche Obligation at the initial fair value which was determined based on significant inputs not observable in the market, which represents a Level 3 measurement within the fair value hierarchy. The fair value of the obligation was estimated based on results of a third-party valuation. This obligation is remeasured prior to the issuance of subsequent tranches and at each subsequent reporting period. As such, the proceeds from the Series A Preferred Share financing were allocated between the Series A Preferred Share Tranche Obligation and Series A Preferred Shares using the residual method, with the Series A Preferred Share Tranche Obligation being recorded at its fair value and the Series A Preferred Shares at the residual value. Each tranche obligation is valued as a forward contract. The values were determined using a probability-weighted present value calculation. In determining the fair values of the tranche obligations, estimates and assumptions impacting fair value included the estimated future values of the Company’s Series A Preferred Shares, discount rates, estimated time to liquidity and probability of each tranche closing. The Company determined the per share future value of the Series A Preferred Shares by back-solving to the initial proceeds of the Series A Preferred Share financing. The Company remeasured each tranche obligation at each reporting period and prior to settlement. A change in the assumptions related to the valuation of the Series A Preferred Share Tranche Obligation could have a significant impact on the value of the obligation. The Company recorded other expense of $1.35 million for changes in the fair value of the Series A Preferred Share Tranche Obligation in the consolidated statements of operations and comprehensive loss for the year ended December 31, 2019. The following table provides a roll forward of the aggregate fair value of the Company’s Series A Preferred Share Tranche Obligation for which fair value was determined using Level 3 inputs:
|  | Series A Preferred Share Tranche Obligation |
|  | (in thousands) |
Balance as of December 31, 2018 |  | $ | 2,490 |
Change in fair value |  |  | 1,350 |
Tranche 2 settlement of obligation |  |  | (880 | )
Tranche 3 termination |  |  | (2,960 | )
Balance as of December 31, 2019 |  | $ | — |

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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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