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FAIR VALUE MEASUREMENT OF FINANCIAL INSTRUMENTS - Summary of Assets and Liabilities Measured at Fair Value (Details) - Recurring Fair Value Measurements $ in Thousands | Dec. 31, 2019 USD ($)
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Assets: |
Short-term investments | $ 57,044
Cash and cash equivalents | 355,010
Investments | 19,087
Other current assets | 35,618
Other assets | 3,687
Total assets measured at fair value | 470,446
Liabilities: |
Contingent earnout liability | 19,873
Level 1 |
Assets: |
Short-term investments | 27,423
Cash and cash equivalents | 355,010
Investments | 18,794
Other current assets | 35,618
Other assets | 3,687
Total assets measured at fair value | 440,532
Liabilities: |
Contingent earnout liability | 0
Level 2 |
Assets: |
Short-term investments | 29,621
Cash and cash equivalents | 0
Investments | 293
Other current assets | 0
Other assets | 0
Total assets measured at fair value | 29,914
Liabilities: |
Contingent earnout liability | 0
Level 3 |
Assets: |
Short-term investments | 0
Cash and cash equivalents | 0
Investments | 0
Other current assets | 0
Other assets | 0
Total assets measured at fair value | 0
Liabilities: |
Contingent earnout liability | 19,873
Certificates of deposit |
Assets: |
Short-term investments | 6,643
Certificates of deposit | Level 1 |
Assets: |
Short-term investments | 0
Certificates of deposit | Level 2 |
Assets: |
Short-term investments | 6,643
Certificates of deposit | Level 3 |
Assets: |
Short-term investments | 0
Corporate and municipal debt securities |
Assets: |
Short-term investments | 22,978
Corporate and municipal debt securities | Level 1 |
Assets: |
Short-term investments | 0
Corporate and municipal debt securities | Level 2 |
Assets: |
Short-term investments | 22,978
Corporate and municipal debt securities | Level 3 |
Assets: |
Short-term investments | 0
U.S. government and federal agency securities |
Assets: |
Short-term investments | 27,423
U.S. government and federal agency securities | Level 1 |
Assets: |
Short-term investments | 27,423
U.S. government and federal agency securities | Level 2 |
Assets: |
Short-term investments | 0
U.S. government and federal agency securities | Level 3 |
Assets: |
Short-term investments | $ 0

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- Definition Represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with fair value disclosures required in footnote disclosures to financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This element represents the fair value of assets categorized as other current assets which are not in and of themselves material enough to require separate disclosure. + References No definition available. + Details
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- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + 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 (a) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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- Definition Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References No definition available. + Details
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- Definition Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=99377092&loc=SL75136599-209740 + Details
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