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FAIR VALUE - Schedule of Net Unrealized Gains (Losses), and Fair Value by Major Security Type for Our Investments (Details) - USD ($) $ in Thousands | Mar. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Cash | $ 80,352 | $ 73,351
Gross Unrealized Gains | 71 | 21
Gross Unrealized Losses | (227) | (571)
Amortized Cost | 1,000,870 | 901,186
Fair Value | 1,082,466 | 975,386
Short-term investments | 115,284 | 91,854
Cash and cash equivalents | 883,996 | 785,791
Long-Term Investments | 83,342 | 98,292
Level 1 |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Gross Unrealized Gains | 13 | 2
Gross Unrealized Losses | 0 | (1)
Amortized Cost | 815,704 | 728,099
Fair Value | 815,717 | 728,101
Level 1 | Cash Equivalents |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Cash Equivalents | 803,644 | 712,440
Level 1 | Short-Term Investments |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Short-term investments | 12,060 | 15,659
Level 2 |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Amortized Cost | 185,166 | 173,087
Gross Unrealized Gains | 58 | 19
Gross Unrealized Losses | (227) | (570)
Fair Value | 184,997 | 172,534
Short-term investments | 103,224 | 76,195
Debt securities, held to maturity | 81,942 | 96,892
Level 2 | Asset-backed securities |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Amortized Cost | 20,972 | 16,280
Gross Unrealized Gains | 9 | 10
Gross Unrealized Losses | (2) | (1)
Fair Value | 20,979 | 16,289
Short-term investments | 1,842 | 697
Debt securities, held to maturity | 19,130 | 15,583
Level 2 | Certificates of deposit |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Amortized Cost | 15,521 | 11,521
Gross Unrealized Losses | (4) | (14)
Fair Value | 15,520 | 11,507
Short-term investments | 15,521 | 11,521
Level 2 | Corporate debt securities |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Amortized Cost | 138,324 | 126,031
Gross Unrealized Gains | 40 | 7
Gross Unrealized Losses | (215) | (494)
Fair Value | 138,149 | 125,543
Short-term investments | 85,861 | 55,013
Debt securities, held to maturity | 52,463 | 71,018
Level 2 | U.S. Treasury securities |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Amortized Cost | 10,349 | 19,255
Gross Unrealized Gains | 6 | 2
Gross Unrealized Losses | (6) | (61)
Fair Value | 10,349 | 19,195
Short-term investments | 0 | 8,964
Debt securities, held to maturity | 10,349 | 10,291
Level 3 |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Investment in SAFE | 1,400 | 1,400
Commercial paper | Level 1 |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Amortized Cost | 12,060 | 15,659
Fair Value | 12,073 | 15,661
Commercial paper | Level 1 | Short-Term Investments |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Short-term investments | 12,060 | 15,659
Money market funds | Level 1 |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Cash Equivalents | 803,644 | 712,440
Money market funds | Level 1 | Cash Equivalents |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Cash Equivalents | $ 803,644 | $ 712,440

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