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SHORT-TERM INVESTMENTS - Schedule of Short-Term Investments (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Short-term investments: |  |
Amortized cost | $ 163,756 | $ 173,183
Unrealized gain | 3 | 17
Unrealized Loss | (1,685) | (192)
Estimated Fair Value | 162,074 | 173,008
Corporate debt securities |  |
Short-term investments: |  |
Amortized cost | 17,056 | 42,174
Unrealized gain | 0 | 11
Unrealized Loss | (164) | (52)
Estimated Fair Value | 16,892 | 42,133
Commercial paper |  |
Short-term investments: |  |
Amortized cost | 18,922 | 20,743
Unrealized gain | 0 | 0
Unrealized Loss | 0 | 0
Estimated Fair Value | 18,922 | 20,743
U.S. government bonds |  |
Short-term investments: |  |
Amortized cost | 106,774 | 86,265
Unrealized gain | 0 | 0
Unrealized Loss | (1,515) | (135)
Estimated Fair Value | 105,259 | 86,130
Certificate of deposits |  |
Short-term investments: |  |
Amortized cost | 9,986 | 21,501
Unrealized gain | 0 | 6
Unrealized Loss | 0 | 0
Estimated Fair Value | 9,986 | 21,507
Treasury bills |  |
Short-term investments: |  |
Amortized cost | 9,518 |
Unrealized gain | 3 |
Unrealized Loss | (5) |
Estimated Fair Value | 9,516 |
Agency bonds |  |
Short-term investments: |  |
Amortized cost | 1,500 | 2,500
Unrealized gain | 0 | 0
Unrealized Loss | (1) | (5)
Estimated Fair Value | $ 1,499 | $ 2,495

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