CASH, CASH EQUIVALENTS AND SHORT-TERM INVESTMENTS (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025	Mar. 31, 2025
Debt Securities, Available-for-Sale [Line Items]
Cash and cash equivalents	$ 87,527	$ 93,548	$ 127,279
HTM Securities
Debt securities, held-to-maturity, adjusted cost basis and recorded basis	319,087	348,873
Unrealized gains	27	130
Unrealized losses	(515)	(205)
Fair market value	318,599	348,798
Debt securities, available-for-sale and held-to-maturity, adjusted cost basis	432,004	447,674
Debt securities, available-for-sale and held-to-maturity, unrealized gains	27	130
Debt securities, available-for-sale and held-to-maturity, unrealized losses	(515)	(205)
Debt securities, available-for-sale and held-to-maturity, fair value	431,516	447,599
Debt securities, available-for-sale and held-to-maturity	432,004	447,674
Level 1 | U.S. Treasury bills
HTM Securities
Debt securities, held-to-maturity, adjusted cost basis and recorded basis	58,953	54,096
Unrealized gains	15	48
Unrealized losses	(48)	0
Fair market value	58,920	54,144
Level 2 | Corporate debt securities
HTM Securities
Debt securities, held-to-maturity, adjusted cost basis and recorded basis	260,134	294,777
Unrealized gains	12	82
Unrealized losses	(467)	(205)
Fair market value	259,679	294,654
Cash and cash equivalents
HTM Securities
Debt securities, held-to-maturity, adjusted cost basis and recorded basis	0	9,920
Debt securities, available-for-sale and held-to-maturity	87,527	93,548
Cash and cash equivalents | Level 1 | U.S. Treasury bills
HTM Securities
Debt securities, held-to-maturity, adjusted cost basis and recorded basis	0	0
Cash and cash equivalents | Level 2 | Corporate debt securities
HTM Securities
Debt securities, held-to-maturity, adjusted cost basis and recorded basis	0	9,920
Short-term investments
HTM Securities
Debt securities, held-to-maturity, adjusted cost basis and recorded basis	319,087	338,953
Debt securities, available-for-sale and held-to-maturity	344,477	354,126
Short-term investments | Level 1 | U.S. Treasury bills
HTM Securities
Debt securities, held-to-maturity, adjusted cost basis and recorded basis	58,953	54,096
Short-term investments | Level 2 | Corporate debt securities
HTM Securities
Debt securities, held-to-maturity, adjusted cost basis and recorded basis	260,134	284,857
Cash
Debt Securities, Available-for-Sale [Line Items]
Cash and cash equivalents, fair value	15,290	7,402
Cash | Cash and cash equivalents
Debt Securities, Available-for-Sale [Line Items]
Cash and cash equivalents	15,290	7,402
Money market funds | Level 1
Debt Securities, Available-for-Sale [Line Items]
Cash and cash equivalents, fair value	72,237	66,213
Money market funds | Cash and cash equivalents | Level 1
Debt Securities, Available-for-Sale [Line Items]
Cash and cash equivalents	72,237	66,213
Certificate of deposits and term deposits | Level 2
Debt Securities, Available-for-Sale [Line Items]
Cash and cash equivalents, fair value	25,390	25,186
Certificate of deposits and term deposits | Cash and cash equivalents | Level 2
Debt Securities, Available-for-Sale [Line Items]
Cash and cash equivalents	0	10,013
Certificate of deposits and term deposits | Short-term investments | Level 2
Debt Securities, Available-for-Sale [Line Items]
Cash and cash equivalents	$ 25,390	$ 15,173