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SHORT-TERM INVESTMENTS - Summary of Continuous Unrealized Losses and Fair Values (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Schedule of Held-to-maturity Securities [Line Items] |  |
Fair value, less than 12 months | $ 510,566 | $ 197,523
Unrealized losses, less than 12 months | (4,582) | (337)
Fair value,12 months or greater | 156,840 | 8,590
Unrealized losses, 12 months or greater | (1,147) | (6)
Fair value, total | 667,406 | 206,113
Unrealized losses, total | (5,729) | (343)
Corporate debentures |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Fair value, less than 12 months | 494,731 | 194,587
Unrealized losses, less than 12 months | (4,413) | (337)
Fair value,12 months or greater | 156,840 | 8,590
Unrealized losses, 12 months or greater | (1,147) | (6)
Fair value, total | 651,571 | 203,177
Unrealized losses, total | (5,560) | (343)
U.S. Treasuries |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Fair value, less than 12 months | 0 | 2,936
Unrealized losses, less than 12 months | 0 | 0
Fair value,12 months or greater | 0 | 0
Unrealized losses, 12 months or greater | 0 | 0
Fair value, total | 0 | 2,936
Unrealized losses, total | 0 | 0
U.S. Government Agencies |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Fair value, less than 12 months | 15,835 | 0
Unrealized losses, less than 12 months | (169) | 0
Fair value,12 months or greater | 0 | 0
Unrealized losses, 12 months or greater | 0 | 0
Fair value, total | 15,835 | 0
Unrealized losses, total | $ (169) | $ 0

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