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FAIR VALUE DISCLOSURES - Additional Information (Detail) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
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Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Equity method investments at fair value | $ 6,307 | $ 8,421 |
Level 3 |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Equity method investments at fair value | $ 6,307 | $ 8,421 | $ 0

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- Definition Fair value portion of investments accounted under the equity method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 25 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=117311354&loc=d3e32014-111567 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Details
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