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Fair Value Measurements | 12 Months Ended
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Dec. 31, 2020
Fair Value Disclosures [Abstract] |
Fair Value Measurements | Fair Value Measurements Financial Assets and Liabilities that are Measured at Fair Value on a Recurring Basis The following table summarizes the financial assets and liabilities measured at fair value on a recurring basis as of December 31, 2020 (in thousands):
| Quoted Prices in Active Markets for Identical Assets (Level 1) |  | Significant Other Observable Inputs (Level 2) |  | Unobservable Inputs (Level 3)
Assets: |  |  |  |  |
Money market instruments | $ | 2,464 |  |  | $ | — |  |  | $ | — |
Corporate bonds | — |  |  | 236,142 |  |  | — |
Treasury bills |  |  | 131,861 |  |  |
Asset-backed securities | — |  |  | 92,218 |  |  | — |
Agency bonds | — |  |  | 19,006 |  |  | — |
Sovereign bonds | — |  |  | 12,100 |  |  | — |
Municipal bonds | — |  |  | 7,038 |  |  |
Economic hedge forward contracts | — |  |  | 265 |  |  | — |
Liabilities: |  |  |  |  |
Economic hedge forward contracts | — |  |  | 38 |  |  | — |
The Company’s money market instruments are reported at fair value based on the daily market price for identical assets in active markets, and are therefore classified as Level 1. The Company’s debt securities and forward contracts are reported at fair value based on model-driven valuations in which all significant inputs are observable or can be derived from or corroborated by observable market data for substantially the full term of the asset or liability, and are therefore classified as Level 2. Management is responsible for estimating the fair value of these financial assets and liabilities, and in doing so, considers valuations provided by a large, third-party pricing service. For debt securities, this service maintains regular contact with market makers, brokers, dealers, and analysts to gather information on market movement, direction, trends, and other specific data. They use this information to structure yield curves for various types of debt securities and arrive at the daily valuations. The Company's forward contracts are typically traded or executed in over-the-counter markets with a high degree of pricing transparency. The market participants are generally large commercial banks. The Company's contingent consideration liabilities are reported at fair value based on probability-adjusted present values of the consideration expected to be paid, using significant inputs that are not observable in the market, and are therefore classified as Level 3. Key assumptions used in these estimates include probability assessments with respect to the likelihood of achieving certain revenue milestones. The fair values of these contingent consideration liabilities were calculated using discount rates consistent with the level of risk of achievement, and are remeasured each reporting period. The following table summarizes the activity for the Company's liabilities measured at fair value using Level 3 inputs (in thousands):
Balance as of December 31, 2018 | $ | 2,554 |
Fair value adjustment to GVi contingent consideration | (1,646) |
Fair value adjustment to Chiaro contingent consideration | 245 |
Balance as of December 31, 2019 | 1,153 |
Fair value adjustment to Chiaro contingent consideration | (114) |
Payment of Chiaro contingent consideration | (1,039) |
Balance as of December 31, 2020 | $ | — |
The fair value of the contingent consideration liability related to the Company's acquisition of GVi Ventures, Inc. in 2017 was written down to zero as of December 31, 2019, resulting from a lower level of revenue in the Americas' automotive industry, and the balance remains at zero as of December 31, 2020. The undiscounted potential outcomes related to future contingent consideration range from $0 to $2,500,000 based on certain revenue levels over the next two years. Non-financial Assets that are Measured at Fair Value on a Non-recurring Basis Non-financial assets, such as property, plant and equipment, operating lease assets, goodwill, and intangible assets, are required to be measured at fair value only when an impairment loss is recognized. The Company evaluates these long-lived assets for impairment whenever events or changes in circumstances, referred to as "triggering events," indicate the carrying value may not be recoverable. Our business has been adversely and materially impacted by deteriorating global economic conditions resulting from the COVID-19 pandemic. These conditions triggered a review of long-lived assets for potential impairment as of May 26, 2020, which resulted in operating lease asset impairment charges of $3,427,000 (refer to Notes 7 and 22) that are included in "Restructuring charges" on the Consolidated Statements of Operations, and intangible asset impairment charges of $19,571,000 (refer to Note 9). These fair value measurements are based on the present values of future cash flows using significant inputs that are not observable in the market, and are therefore classified as Level 3. The Company did not record impairment charges related to non-financial assets in 2019 and 2018.

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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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