FINANCIAL INSTRUMENTS - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Short-term investments:
Short-term investments	$ 8,448	$ 8,723
Total assets	43,956	111,466
Time deposits
Short-term investments:
Short-term investments	8,448	8,723
Quoted Market Prices in Active Markets for Identical Assets (Level 1)
Short-term investments:
Total assets	35,508	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	8,448	34,316
Significant Other Observable Inputs (Level 2) | Time deposits
Short-term investments:
Short-term investments	8,448	8,723
Money market funds
Cash equivalents:
Cash equivalents	35,508	77,150
Money market funds | Quoted Market Prices in Active Markets for Identical Assets (Level 1)
Cash equivalents:
Cash equivalents	35,508	77,150
Money market funds | Significant Other Observable Inputs (Level 2)
Cash equivalents:
Cash equivalents	$ 0	0
Time deposits
Cash equivalents:
Cash equivalents		25,593
Time deposits | Quoted Market Prices in Active Markets for Identical Assets (Level 1)
Cash equivalents:
Cash equivalents		0
Time deposits | Significant Other Observable Inputs (Level 2)
Cash equivalents:
Cash equivalents		$ 25,593