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FINANCIAL INSTRUMENTS - Schedule of Available-For-Sale Securities (Details) - USD ($) $ in Thousands | Jun. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Fair Value Measurements |  |
Cost | $ 195,430 |
Gross Unrealized Gains | 0 |
Gross Unrealized Losses | (1,098) |
Fair Value (Level 2) | 194,332 |
Short-term: |  |
Fair Value Measurements |  |
Cost |  | $ 70,651
Gross Unrealized Gains |  | 182
Gross Unrealized Losses |  | (2)
Fair Value (Level 2) |  | 70,831
Asset-backed securities | Short-term: |  |
Fair Value Measurements |  |
Cost | 30,906 | 3,182
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (239) | 0
Fair Value (Level 2) | 30,667 | 3,182
Commercial paper | Short-term: |  |
Fair Value Measurements |  |
Cost | 138,705 | 57,533
Gross Unrealized Gains | 0 | 80
Gross Unrealized Losses | (796) | (2)
Fair Value (Level 2) | 137,909 | 57,611
Corporate bonds | Short-term: |  |
Fair Value Measurements |  |
Cost | 6,288 | 9,936
Gross Unrealized Gains | 0 | 102
Gross Unrealized Losses | (31) | 0
Fair Value (Level 2) | 6,257 | $ 10,038
U.S. Government bonds | Short-term: |  |
Fair Value Measurements |  |
Cost | 19,531 |
Gross Unrealized Gains | 0 |
Gross Unrealized Losses | (32) |
Fair Value (Level 2) | $ 19,499 |

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