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Fair Value Measurements - (Tables) | 12 Months Ended
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Dec. 31, 2019
Fair Value Disclosures [Abstract] |
Schedule of Assets and Liabilities Carried at Fair Value Measured on a Recurring Basis | The following tables provide the assets and liabilities carried at fair value measured on a recurring basis at December 31, 2019 and December 31, 2018:
|  | Fair Value Measurements Using |
|  | Carrying Value |  |  | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |  | Significant Other Observable Inputs (Level 2) |  |  | Significant Unobservable Inputs (Level 3) |
December 31, 2019 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Available-for-sale debt securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Municipal notes and bonds |  | $ | 81,108 |  |  | $ | — |  |  | $ | 81,108 |  |  | $ | — |
Asset-backed securities |  |  | 10,779 |  |  |  | — |  |  |  | 10,779 |  |  |  | — |
Certificates of deposit |  |  | 30,507 |  |  |  | — |  |  |  | 30,507 |  |  |  | — |
Commercial paper |  |  | 30,708 |  |  |  | — |  |  |  | 30,708 |  |  |  | — |
Corporate bonds |  |  | 36,461 |  |  |  | — |  |  |  | 36,461 |  |  |  | — |
Foreign currency forward contracts |  |  | 120 |  |  |  | — |  |  |  | 120 |  |  |  | — |
Total assets |  | $ | 189,683 |  |  | $ | — |  |  | $ | 189,683 |  |  | $ | — |
Liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contingent consideration - acquisitions |  | $ | 569 |  |  | $ | — |  |  | $ | — |  |  | $ | 569 |
Total liabilities |  | $ | 569 |  |  | $ | — |  |  | $ | — |  |  | $ | 569 |
December 31, 2018 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Available-for-sale debt securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Municipal notes and bonds |  | $ | 62,684 |  |  | $ | — |  |  | $ | 62,684 |  |  | $ | — |
Total assets |  | $ | 62,684 |  |  | $ | — |  |  | $ | 62,684 |  |  | $ | — |
Liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contingent consideration - acquisitions |  | $ | 2,060 |  |  | $ | — |  |  | $ | — |  |  | $ | 2,060 |
Foreign currency forward contracts |  |  | 32 |  |  |  | — |  |  |  | 32 |  |  |  | — |
Total liabilities |  | $ | 2,092 |  |  | $ | — |  |  | $ | 32 |  |  | $ | 2,060 |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation | This table presents a reconciliation of all liabilities measured at fair value on a recurring basis using significant unobservable inputs (Level 3) for the year ended December 31, 2019:
|  | Fair Value Measurements Using Significant Unobservable Inputs (Level 3) |
Balance at December 31, 2018 |  | $ | 2,060 |
Total loss due to remeasurement included in general and administrative expense |  |  | 267 |
Additions |  |  | — |
Payments |  |  | (1,758 | )
Transfer into (out of) Level 3 |  |  | — |
Balance at December 31, 2019 |  | $ | 569 |

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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=117815213&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=117815213&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://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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