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FAIR VALUE MEASUREMENTS - EQUITY INVESTMENT (Details) - USD ($) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2021 | Aug. 03, 2020
Equity Investments [Line Item] |  |
Realized investment gains (losses) | $ 1,233,000 |
Maximum |  |
Equity Investments [Line Item] |  |
Equity investment ownership percentage |  | 20.00%

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- Definition Equity investment ownership percentage. + References No definition available. + 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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- Definition Amount of realized gain (loss) on investment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.3(a)) -URI http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263 + Details
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