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FAIR VALUE MEASUREMENTS - Summary of Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Assets: |  |
Marketable securities | $ 1,628,458 | $ 1,541,229
Certificates of deposit |  |
Assets: |  |
Marketable securities | 26,375 | 55,912
Commercial paper |  |
Assets: |  |
Marketable securities | 77,239 | 71,437
Corporate notes and bonds |  |
Assets: |  |
Marketable securities | 459,647 | 406,096
U.S. Treasuries |  |
Assets: |  |
Marketable securities | 222,585 | 327,891
U.S. Government agency securities |  |
Assets: |  |
Marketable securities | 748,367 | 547,856
Recurring | Level 1 |  |
Assets: |  |
Investments in debt securities | 0 | 0
Total assets measured at fair value | 94,245 | 132,037
Warranty obligations: |  |
Current | 0 | 0
Non-current | 0 | 0
Total warranty obligations measured at fair value | 0 | 0
Total liabilities measured at fair value | 0 | 0
Recurring | Level 1 | Certificates of deposit |  |
Assets: |  |
Marketable securities | 0 | 0
Recurring | Level 1 | Commercial paper |  |
Assets: |  |
Marketable securities | 0 | 0
Recurring | Level 1 | Corporate notes and bonds |  |
Assets: |  |
Marketable securities | 0 | 0
Recurring | Level 1 | U.S. Treasuries |  |
Assets: |  |
Marketable securities | 0 | 0
Recurring | Level 1 | U.S. Government agency securities |  |
Assets: |  |
Marketable securities | 0 | 0
Recurring | Level 1 | Money market funds |  |
Assets: |  |
Cash and cash equivalents | 94,245 | 132,037
Recurring | Level 1 | Certificates of deposit |  |
Assets: |  |
Cash and cash equivalents | 0 | 0
Recurring | Level 1 | Commercial paper |  |
Assets: |  |
Cash and cash equivalents | 0 | 0
Recurring | Level 1 | Corporate notes and bonds |  |
Assets: |  |
Cash and cash equivalents |  | 0
Recurring | Level 2 |  |
Assets: |  |
Investments in debt securities | 0 | 0
Total assets measured at fair value | 1,534,213 | 1,409,192
Warranty obligations: |  |
Current | 0 | 0
Non-current | 0 | 0
Total warranty obligations measured at fair value | 0 | 0
Total liabilities measured at fair value | 0 | 0
Recurring | Level 2 | Certificates of deposit |  |
Assets: |  |
Marketable securities | 26,375 | 55,162
Recurring | Level 2 | Commercial paper |  |
Assets: |  |
Marketable securities | 53,325 | 69,743
Recurring | Level 2 | Corporate notes and bonds |  |
Assets: |  |
Marketable securities | 459,647 | 405,634
Recurring | Level 2 | U.S. Treasuries |  |
Assets: |  |
Marketable securities | 222,585 | 327,891
Recurring | Level 2 | U.S. Government agency securities |  |
Assets: |  |
Marketable securities | 748,367 | 547,856
Recurring | Level 2 | Money market funds |  |
Assets: |  |
Cash and cash equivalents | 0 | 0
Recurring | Level 2 | Certificates of deposit |  |
Assets: |  |
Cash and cash equivalents |  | 750
Recurring | Level 2 | Commercial paper |  |
Assets: |  |
Cash and cash equivalents | 23,914 | 1,694
Recurring | Level 2 | Corporate notes and bonds |  |
Assets: |  |
Cash and cash equivalents | 0 | 462
Recurring | Level 3 |  |
Assets: |  |
Investments in debt securities | 61,137 | 79,855
Total assets measured at fair value | 61,137 | 79,855
Warranty obligations: |  |
Current | 26,087 | 28,667
Non-current | 130,633 | 133,126
Total warranty obligations measured at fair value | 156,720 | 161,793
Total liabilities measured at fair value | 156,720 | 161,793
Recurring | Level 3 | Certificates of deposit |  |
Assets: |  |
Marketable securities | 0 | 0
Recurring | Level 3 | Commercial paper |  |
Assets: |  |
Marketable securities | 0 | 0
Recurring | Level 3 | Corporate notes and bonds |  |
Assets: |  |
Marketable securities | 0 | 0
Recurring | Level 3 | U.S. Treasuries |  |
Assets: |  |
Marketable securities | 0 | 0
Recurring | Level 3 | U.S. Government agency securities |  |
Assets: |  |
Marketable securities | 0 | 0
Recurring | Level 3 | Money market funds |  |
Assets: |  |
Cash and cash equivalents | 0 | 0
Recurring | Level 3 | Certificates of deposit |  |
Assets: |  |
Cash and cash equivalents | 0 | 0
Recurring | Level 3 | Commercial paper |  |
Assets: |  |
Cash and cash equivalents | 0 | 0
Recurring | Level 3 | Corporate notes and bonds |  |
Assets: |  |
Cash and cash equivalents | $ 0 | $ 0

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