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CASH, CASH EQUIVALENTS AND SHORT-TERM INVESTMENTS - Schedule of Cash and Cash Equivalents and Short-Term Investments (Details) - USD ($) $ in Thousands | Jun. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Debt Securities, Available-for-Sale [Line Items] |  |
Cash and cash equivalents | $ 156,978 | $ 115,326
HTM Securities |  |
Debt securities, held-to-maturity, adjusted cost basis and recorded basis | 539,747 | 537,153
Unrealized gains | 56 | 1,086
Unrealized losses | (861) | (1,139)
Fair market value | 538,942 | 537,100
Debt securities, available-for-sale and held-to-maturity, adjusted cost basis | 940,815 | 969,425
Debt securities, available-for-sale and held-to-maturity, unrealized gains | 56 | 1,086
Debt securities, available-for-sale and held-to-maturity, unrealized losses | (861) | (1,139)
Debt securities, available-for-sale and held-to-maturity, fair value | 940,010 | 969,372
Debt securities, available-for-sale and held-to-maturity | 940,815 | 969,425
Level 1 | U.S. Treasury bills |  |
HTM Securities |  |
Debt securities, held-to-maturity, adjusted cost basis and recorded basis | 140,031 | 188,030
Unrealized gains | 12 | 8
Unrealized losses | (136) | (540)
Fair market value | 139,907 | 187,498
Level 2 | Government and governmental agencies |  |
HTM Securities |  |
Debt securities, held-to-maturity, adjusted cost basis and recorded basis | 25,282 | 44,357
Unrealized gains | 1 | 12
Unrealized losses | (60) | (12)
Fair market value | 25,223 | 44,357
Level 2 | Corporate debt securities |  |
HTM Securities |  |
Debt securities, held-to-maturity, adjusted cost basis and recorded basis | 374,434 | 304,766
Unrealized gains | 43 | 1,066
Unrealized losses | (665) | (587)
Fair market value | 373,812 | 305,245
Cash and cash equivalents |  |
HTM Securities |  |
Debt securities, held-to-maturity, adjusted cost basis and recorded basis | 0 | 0
Debt securities, available-for-sale and held-to-maturity | 156,978 | 115,326
Cash and cash equivalents | Level 2 | Corporate debt securities |  |
HTM Securities |  |
Debt securities, held-to-maturity, adjusted cost basis and recorded basis | 0 | 0
Short-term investments |  |
HTM Securities |  |
Debt securities, held-to-maturity, adjusted cost basis and recorded basis | 539,747 | 537,153
Debt securities, available-for-sale and held-to-maturity | 783,837 | 854,099
Short-term investments | Level 1 | U.S. Treasury bills |  |
HTM Securities |  |
Debt securities, held-to-maturity, adjusted cost basis and recorded basis | 140,031 | 188,030
Short-term investments | Level 2 | Government and governmental agencies |  |
HTM Securities |  |
Debt securities, held-to-maturity, adjusted cost basis and recorded basis | 25,282 | 44,357
Short-term investments | Level 2 | Corporate debt securities |  |
HTM Securities |  |
Debt securities, held-to-maturity, adjusted cost basis and recorded basis | 374,434 | 304,766
Cash |  |
Debt Securities, Available-for-Sale [Line Items] |  |
Cash and cash equivalents, fair value | 9,995 | 9,697
Cash | Cash and cash equivalents |  |
Debt Securities, Available-for-Sale [Line Items] |  |
Cash and cash equivalents | 9,995 | 9,697
Money market funds | Level 1 |  |
Debt Securities, Available-for-Sale [Line Items] |  |
Cash and cash equivalents, fair value | 139,983 | 105,629
Money market funds | Cash and cash equivalents | Level 1 |  |
Debt Securities, Available-for-Sale [Line Items] |  |
Cash and cash equivalents | 139,983 | 105,629
Certificate of deposits and term deposits | Level 2 |  |
Debt Securities, Available-for-Sale [Line Items] |  |
Cash and cash equivalents, fair value | 251,090 | 316,946
Certificate of deposits and term deposits | Cash and cash equivalents | Level 2 |  |
Debt Securities, Available-for-Sale [Line Items] |  |
Cash and cash equivalents | 7,000 | 0
Certificate of deposits and term deposits | Short-term investments | Level 2 |  |
Debt Securities, Available-for-Sale [Line Items] |  |
Cash and cash equivalents | $ 244,090 | $ 316,946

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