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CASH, CASH EQUIVALENTS AND SHORT AND LONG TERM INVESTMENTS - Summary of Available-for-sale Investments -Additional Information (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2019 USD ($)
Level 3 |
Schedule of Available-for-sale Securities [Line Items] |
Estimated fair value | $ 2.1
Minimum |
Schedule of Available-for-sale Securities [Line Items] |
Maturity period of bank notes receivable | 3 months
Maximum |
Schedule of Available-for-sale Securities [Line Items] |
Maturity period of bank notes receivable | 1 year

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- Definition Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading. + 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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X
- Definition Maturity period of bank notes receivable. + References No definition available. + Details
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- Details
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