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FAIR VALUE MEASUREMENTS (Tables) | 12 Months Ended
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Dec. 31, 2018
Fair Value Disclosures [Abstract] |
Fair Value of Assets and Liabilities Measured on Recurring Basis | The following table sets forth, by level within the fair value hierarchy, our financial assets and liabilities that are accounted for at fair value on a recurring basis as of December 31, 2018 and 2017. As required by ASC 820, financial assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement (in thousands):
| December 31, 2018
| Quoted Prices in Active Markets for Identical Items (Level 1) |  | Significant Other Observable Inputs (Level 2) |  | Significant Unobservable Inputs (Level 3) |  | Total
Liabilities: |  |  |  |  |  |  |
Contingent consideration 1 | $ | — |  |  | $ | — |  |  | $ | 429 |  |  | $ | 429 |
Net investment hedge | $ | — |  |  | $ | (3,904 | ) |  | $ | — |  |  | $ | (3,904 | )
Embedded derivative in convertible debt 2 | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
| December 31, 2017
| Quoted Prices in Active Markets for Identical Items (Level 1) |  | Significant Other Observable Inputs (Level 2) |  | Significant Unobservable Inputs (Level 3) |  | Total
Liabilities: |  |  |  |  |  |  |
Contingent consideration 1 | $ | — |  |  | $ | — |  |  | $ | 1,712 |  |  | $ | 1,712 |
Net investment hedge | $ | — |  |  | $ | (3,246 | ) |  | $ | — |  |  | $ | (3,246 | )
Embedded derivative in convertible debt 2 | $ | — |  |  | $ | 20,594 |  |  | $ | — |  |  | $ | 20,594 |
__________________________
1 | Inclusive of both current and noncurrent portions.
2 | The embedded derivative liability was reclassified to stockholders’ equity as of May 17, 2018 and is no longer marked to fair value each period, as discussed in Note 10.
Summary of Changes in Fair Value of Level 3 Contingent Consideration | The following table represents the changes in the fair value of Level 3 contingent consideration (in thousands):
| Twelve Months Ended December 31,
| 2018 |  | 2017
Beginning balance | $ | 1,712 |  |  | $ | 3,739 |
Accretion of liability | 39 |  |  | 222 |
Foreign currency effects | (14 | ) |  | 203 |
Payment | (1,106 | ) |  | (1,278 | )
Revaluation | (202 | ) |  | (1,174 | )
Ending balance | $ | 429 |  |  | $ | 1,712 |

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- Definition Tabular disclosure of the fair value measurement of liabilities using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets), and gains or losses recognized in other comprehensive income (loss) and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs) by class of liability. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19279-110258 + Details
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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19190-110258 + Details
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