CASH, CASH EQUIVALENTS AND SHORT-TERM INVESTMENTS - Schedule of Cash and Cash Equivalents and Short-Term Investments (Details) € in Thousands, $ in Thousands	Mar. 31, 2025 USD ($)	Mar. 31, 2025 EUR (€)	Dec. 31, 2024 USD ($)	Mar. 31, 2024 USD ($)
Debt Securities, Available-for-Sale [Line Items]
Cash and cash equivalents	$ 127,279		$ 163,767	$ 453,763
HTM Securities
Debt securities, held-to-maturity, adjusted cost basis and recorded basis	629,461		625,986
Unrealized gains	615		1,013
Unrealized losses	(26)		(120)
Fair market value	630,050		626,879
Debt securities, available-for-sale and held-to-maturity, adjusted cost basis	929,131		959,873
Debt securities, available-for-sale and held-to-maturity, unrealized gains	615		1,013
Debt securities, available-for-sale and held-to-maturity, unrealized losses	(26)		(120)
Debt securities, available-for-sale and held-to-maturity, fair value	929,720		960,766
Debt securities, available-for-sale and held-to-maturity	929,131		959,873
Asset pledged as collateral
HTM Securities
Debt securities, available-for-sale and held-to-maturity, adjusted cost basis	16,231	€ 15,000
Level 1 | U.S. Treasury bills
HTM Securities
Debt securities, held-to-maturity, adjusted cost basis and recorded basis	117,961		118,618
Unrealized gains	45		93
Unrealized losses	(1)		(1)
Fair market value	118,005		118,710
Level 2 | Government and governmental agencies
HTM Securities
Debt securities, held-to-maturity, adjusted cost basis and recorded basis			0
Unrealized gains			0
Unrealized losses			0
Fair market value			0
Level 2 | Corporate debt securities
HTM Securities
Debt securities, held-to-maturity, adjusted cost basis and recorded basis	511,500		507,368
Unrealized gains	570		920
Unrealized losses	(25)		(119)
Fair market value	512,045		508,169
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	127,279		163,767
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		0
Short-term investments (2)
HTM Securities
Debt securities, held-to-maturity, adjusted cost basis and recorded basis	629,461		625,986
Debt securities, available-for-sale and held-to-maturity	801,852		796,106
Short-term investments (2) | Level 1 | U.S. Treasury bills
HTM Securities
Debt securities, held-to-maturity, adjusted cost basis and recorded basis	117,961		118,618
Short-term investments (2) | Level 2 | Government and governmental agencies
HTM Securities
Debt securities, held-to-maturity, adjusted cost basis and recorded basis			0
Short-term investments (2) | Level 2 | Corporate debt securities
HTM Securities
Debt securities, held-to-maturity, adjusted cost basis and recorded basis	511,500		507,368
Cash
Debt Securities, Available-for-Sale [Line Items]
Cash and cash equivalents, fair value	14,347		11,848
Cash | Cash and cash equivalents
Debt Securities, Available-for-Sale [Line Items]
Cash and cash equivalents	14,347		11,848
Money market funds | Level 1
Debt Securities, Available-for-Sale [Line Items]
Cash and cash equivalents, fair value	111,032		151,919
Money market funds | Cash and cash equivalents | Level 1
Debt Securities, Available-for-Sale [Line Items]
Cash and cash equivalents	111,032		151,919
Certificate of deposits and term deposits | Level 2
Debt Securities, Available-for-Sale [Line Items]
Cash and cash equivalents, fair value	174,291		170,120
Certificate of deposits and term deposits | Cash and cash equivalents | Level 2
Debt Securities, Available-for-Sale [Line Items]
Cash and cash equivalents	1,900		0
Certificate of deposits and term deposits | Short-term investments (2) | Level 2
Debt Securities, Available-for-Sale [Line Items]
Cash and cash equivalents	$ 172,391		$ 170,120