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FAIR VALUE MEASUREMENTS - Schedule of Assets and Liabilities Measured at Fair Value (Details) - USD ($) $ in Thousands | Sep. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Fair Value Assets |  |
Marketable securities | $ 167,286 | $ 152,167
Capped call transactions | 1,792 | 2,582
Cash equivalents |  |
Fair Value Assets |  |
Cash equivalents | 22,686 | 2,526
Venture investments |  |
Fair Value Assets |  |
Venture investments | 19,348 | 13,069
Level 1 |  |
Fair Value Assets |  |
Marketable securities | 0 | 0
Capped call transactions | 0 | 0
Level 1 | Cash equivalents |  |
Fair Value Assets |  |
Cash equivalents | 22,686 | 2,526
Level 1 | Venture investments |  |
Fair Value Assets |  |
Venture investments | 0 | 0
Level 2 |  |
Fair Value Assets |  |
Marketable securities | 167,286 | 152,167
Capped call transactions | 1,792 | 2,582
Level 2 | Cash equivalents |  |
Fair Value Assets |  |
Cash equivalents | 0 | 0
Level 2 | Venture investments |  |
Fair Value Assets |  |
Venture investments | 0 | 0
Level 3 |  |
Fair Value Assets |  |
Marketable securities | 0 | 0
Capped call transactions | 0 | 0
Level 3 | Cash equivalents |  |
Fair Value Assets |  |
Cash equivalents | 0 | 0
Level 3 | Venture investments |  |
Fair Value Assets |  |
Venture investments | $ 19,348 | $ 13,069

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- Definition Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. 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