FAIR VALUE MEASUREMENTS - Cash Equivalents and Marketable Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Included in cash and cash equivalents:
Amortized Cost	$ 55,505	$ 50,193
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(1)	(1)
Estimated Fair Value	55,504	50,192
Restricted cash:
Restricted cash	1,865	1,860
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Estimated Fair Value	1,865	1,860
Marketable securities:
Amortized Cost	371,595	421,790
Gross Unrealized Gains	373	470
Gross Unrealized Losses	(41)	(191)
Estimated Fair Value	371,927	422,069
Money market funds
Included in cash and cash equivalents:
Amortized Cost	51,525	45,215
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Estimated Fair Value	51,525	45,215
Restricted cash:
Restricted cash	1,592	1,587
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Estimated Fair Value	1,592	1,587
Commercial paper
Included in cash and cash equivalents:
Amortized Cost	3,980	4,978
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(1)	(1)
Estimated Fair Value	3,979	4,977
Certificate of deposit
Restricted cash:
Restricted cash	273	273
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Estimated Fair Value	273	273
U.S. Treasury securities (due in less than one year)
Marketable securities:
Amortized Cost	8,991	7,937
Gross Unrealized Gains	15	22
Gross Unrealized Losses	0	0
Estimated Fair Value	9,006	7,959
U.S. Treasury securities (due in 1 to 2 years)
Marketable securities:
Amortized Cost	18,678	22,620
Gross Unrealized Gains	32	1
Gross Unrealized Losses	0	(11)
Estimated Fair Value	18,710	22,610
Government-sponsored enterprise securities (due in less than one year)
Marketable securities:
Amortized Cost	4,000	8,741
Gross Unrealized Gains	0	7
Gross Unrealized Losses	(4)	0
Estimated Fair Value	3,996	8,748
Commercial paper (due in less than one year)
Marketable securities:
Amortized Cost	127,931	180,131
Gross Unrealized Gains	57	150
Gross Unrealized Losses	(11)	(56)
Estimated Fair Value	127,977	180,225
Corporate notes (due in less than one year)
Marketable securities:
Amortized Cost	171,965	130,361
Gross Unrealized Gains	209	284
Gross Unrealized Losses	(21)	(27)
Estimated Fair Value	172,153	130,618
Corporate notes (due in one to two years)
Marketable securities:
Amortized Cost	40,030	72,000
Gross Unrealized Gains	60	6
Gross Unrealized Losses	(5)	(97)
Estimated Fair Value	$ 40,085	$ 71,909

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Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Amount of short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Amortized cost excluding accrued interest, after allowance for credit loss, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount of cash and cash equivalents restricted as to withdrawal or usage, classified as current. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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