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Fair Value Measurements | 6 Months Ended
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Jun. 30, 2018
Fair Value Disclosures [Abstract] |
Fair Value Measurements | Fair Value Measurements We follow fair value measurement authoritative accounting guidance for measuring fair values of assets and liabilities in financial statements. We have consistently used the same valuation techniques for all periods presented. Please see Note 10 - Fair Value Measurements in our Annual Report for further discussion. A summary of financial assets and liabilities that are measured at fair value on a recurring basis, as of June 30, 2018 and December 31, 2017, were as follows (in thousands):
| Quoted Prices in Active Markets |  | Significant Other Observable Inputs |  | Significant Unobservable Inputs |  |
| (Level 1) |  | (Level 2) |  | (Level 3) |  | Total
June 30, 2018 |  |  |  |  |  |  |
Assets: |  |  |  |  |  |  |
Derivative financial instruments | $ | — |  |  | $ | 278 |  |  | $ | — |  |  | $ | 278 |
Investments: |  |  |  |  |  |  |
Cash surrender value of life insurance policies - deferred compensation plan | — |  |  | 30,706 |  |  | — |  |  | 30,706 |
Marketable securities - other | 54 |  |  | — |  |  | — |  |  | 54 |
Liabilities: |  |  |  |  |  |  |
Deferred compensation plan | — |  |  | 26,158 |  |  | — |  |  | 26,158 |
December 31, 2017 |  |  |  |  |  |  |
Assets: |  |  |  |  |  |  |
Investments: |  |  |  |  |  |  |
Cash surrender value of life insurance policies - deferred compensation plan | $ | — |  |  | $ | 30,351 |  |  | $ | — |  |  | $ | 30,351 |
Marketable securities - other | 113 |  |  | — |  |  | — |  |  | 113 |
Liabilities: |  |  |  |  |  |  |
Derivative financial instruments | — |  |  | 487 |  |  | — |  |  | 487 |
Deferred compensation plan | — |  |  | 26,797 |  |  | — |  |  | 26,797 |
Our derivative financial instruments consist of short-duration foreign currency forward contracts. The fair value of our derivative financial instruments is based on quoted market values including foreign exchange forward rates and interest rates. The fair value is computed by discounting the projected future cash flow amounts to present value. Derivative financial instruments are included in our condensed consolidated balance sheets in accounts receivable, net at June 30, 2018 and in accounts payable and accrued liabilities at December 31, 2017. Our investments associated with our deferred compensation plan consist primarily of the cash surrender value of life insurance policies and are included in other assets on the condensed consolidated balance sheets. Our investments change as a result of contributions, payments, and fluctuations in the market. Our liabilities associated with our deferred compensation plan are included in o ther non-current liabilities on the condensed consolidated balance sheets. Assets and liabilities, measured using significant observable inputs, are reported at fair value based on third-party broker statements, which are derived from the fair value of the funds' underlying investments. We also have marketable securities in publicly traded equity securities as an indirect result of strategic investments. They are reported at fair value based on the price of the stock and are included in other assets on the condensed consolidated balance sheets. Assets and Liabilities Measured at Fair Value on a Non-recurring Basis We apply the provisions of the fair value measurement standard to our non-recurring, non-financial measurements including business combinations as well as impairment related to goodwill and other long-lived assets. Other Fair Value Considerations The carrying values on our condensed consolidated balance sheet of our cash and cash equivalents, short-term investments, trade accounts receivable, other current assets, accounts payable, accrued and other current liabilities and lines of credit approximate fair values due to their short maturities.

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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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