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Fair Value Measurements | 12 Months Ended
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Dec. 31, 2017
Fair Value Disclosures [Abstract] |
Fair Value Measurements | Fair Value Measurements The Company carries cash equivalents consisting of money market funds at fair value on a recurring basis. Fair value is based on the price that would be received from selling an asset in an orderly transaction between market participants at the measurement date. Fair value is estimated by applying the following hierarchy, which prioritizes the inputs used to measure fair value into three levels and bases the categorization within the hierarchy upon the lowest level of input that is available and significant to the fair value measurement: Level 1 — Observable inputs which include unadjusted quoted prices in active markets for identical assets. Level 2 — Observable inputs other than Level 1 inputs, such as quoted prices for similar assets, quoted prices for identical or similar assets in inactive markets, or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the asset. Level 3 — Unobservable inputs that are supported by little or no market activity and that are based on management’s assumptions, including fair value measurements determined by using pricing models, discounted cash flow methodologies or similar techniques. The fair value of assets and liabilities carried at fair value was determined using the following inputs (in thousands):
|  | December 31, 2017
|  | Total |  | Level 1 |  | Level 3
Assets |  |  |  |  |  |
Cash equivalents: |  |  |  |  |  |
Money market funds |  | $ | 20,092 |  |  | $ | 20,092 |  |  | $ | — |
Other Assets |  |  |  |  |  |
Embedded conversion option held for investment |  | $ | 984 |  |  | $ | — |  |  | $ | 984 |
|  | December 31, 2016
|  | Total |  | Level 1 |  | Level 3
Assets |  |  |  |  |  |
Cash equivalents: |  |  |  |  |  |
Money market funds |  | $ | 20,069 |  |  | $ | 20,069 |  |  | $ | — |
Other Assets |  |  |  |  |  |
Embedded conversion option held for investment |  | $ | 873 |  |  | $ | — |  |  | $ | 873 |
Fair Value Measured and Recorded Using Significant Unobservable Inputs (Level 3) (in thousands):
|  | December 31, 2017
Beginning balance |  | $ | 873 |
Total gains included in earnings (1) |  | 111 |
Ending balance |  | $ | 984 |
(1) | Amount includes both fair value and foreign currency adjustments.
The valuation of an embedded conversion option held for investment was performed using a Black-Scholes option-pricing model which relies primarily on estimates of expected term, volatility, risk-free rate, and dividends related to our investment in a privately-held company, or the investee. The most significant unobservable inputs used in the determination of estimated fair value of the option are the estimates of share price and volatility, driven by the investee’s ability to meet financial targets, and which directly correlates to the fair value recognized in other non-current assets within the consolidated balance sheets. The fair value of this asset is estimated quarterly by management based on inputs received from the investee’s management using the excess earnings method under the income approach. Potential valuation adjustments are made as the progress toward achieving financial targets becomes determinable, with the impact of such adjustments being recorded to ‘Interest income and other’ in our consolidated statements of operations and comprehensive loss. During 2017, there were no transfers in or out of Level 3 from other levels in the fair value hierarchy. In addition, there were no assets or liabilities measured at fair value on a non-recurring basis as of December 31, 2017. In February 2018, the Company exercised the embedded option to convert its convertible notes into common shares of the investee company prior to the investee company’s acquisition. See Note 14. The Company’s other financial instruments’ fair value, including accounts receivable, accounts payable and other current liabilities, approximate its carrying value due to the relatively short maturity of those instruments. The carrying amounts of the Company’s debt and capital leases approximate their fair value, which is the present value of expected future cash payments based on assumptions about current interest rates and the creditworthiness of the Company. The inputs used to measure fair value of the Company’s debt and capital leases are classified as Level 2 inputs.

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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/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -URI http://asc.fasb.org/topic&trid=2155941 + Details
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