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Fair Value Measurements (Tables) | 12 Months Ended
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Dec. 31, 2017
Fair Value Disclosures [Abstract] |
Fair Value Measurement of Financial Assets and Liabilities on Recurring Basis | The following tables present the fair value measurement hierarchy of the Company’s assets and liabilities on a recurring basis as of December 31, 2017 and 2016 (in thousands):
|  | Fair Value as of December 31, 2017 |
|  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Total |
Liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contingent consideration |  | $ | — |  |  | $ | — |  |  | $ | 2,774 |  |  | $ | 2,774 |
|  | Fair Value as of December 31, 2016 |
|  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Total |
Liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contingent consideration |  | $ | — |  |  | $ | — |  |  | $ | 2,733 |  |  | $ | 2,733 |
Summary of Changes in the Fair Value of the Contingent Consideration Liability | The following table summarizes the changes in the fair value of the contingent consideration liability during 2016 and 2017 (in thousands):
Balance at December 31, 2015 |  | $ | 3,457 |
Payment of contingent consideration |  |  | (816 | )
Fair value adjustment of contingent consideration |  |  | 92 |
Balance at December 31, 2016 |  |  | 2,733 |
Payment of contingent consideration |  |  | (897 | )
Fair value adjustment of contingent consideration |  |  | 938 |
Balance at December 31, 2017 |  | $ | 2,774 |

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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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19279-110258 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + 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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19190-110258 + Details
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