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FINANCIAL INSTRUMENTS - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands | Sep. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Short-term investments: |  |
Short-term investments | $ 5,936 | $ 8,723
Total assets | 150,155 | 111,466
Time deposits |  |
Short-term investments: |  |
Short-term investments | 5,936 | 8,723
Quoted Market Prices in Active Markets for Identical Assets (Level 1) |  |
Short-term investments: |  |
Total assets | 12,645 | 77,150
Quoted Market Prices in Active Markets for Identical Assets (Level 1) | Time deposits |  |
Short-term investments: |  |
Short-term investments | 0 | 0
Significant Other Observable Inputs (Level 2) |  |
Short-term investments: |  |
Total assets | 137,510 | 34,316
Significant Other Observable Inputs (Level 2) | Time deposits |  |
Short-term investments: |  |
Short-term investments | 5,936 | 8,723
Money market funds |  |
Cash equivalents: |  |
Cash equivalents | 12,645 | 77,150
Money market funds | Quoted Market Prices in Active Markets for Identical Assets (Level 1) |  |
Cash equivalents: |  |
Cash equivalents | 12,645 | 77,150
Money market funds | Significant Other Observable Inputs (Level 2) |  |
Cash equivalents: |  |
Cash equivalents | 0 | 0
Time deposits |  |
Cash equivalents: |  |
Cash equivalents | 131,574 | 25,593
Time deposits | Quoted Market Prices in Active Markets for Identical Assets (Level 1) |  |
Cash equivalents: |  |
Cash equivalents | 0 | 0
Time deposits | Significant Other Observable Inputs (Level 2) |  |
Cash equivalents: |  |
Cash equivalents | $ 131,574 | $ 25,593

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