FAIR VALUE MEASUREMENTS - Cash Equivalents and Marketable Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Included in cash and cash equivalents:
Amortized Cost	$ 38,782	$ 50,193
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(1)	(1)
Fair Value	38,781	50,192
Restricted cash:
Restricted cash	1,870	1,860
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	1,870	1,860
Marketable securities:
Amortized Cost	352,847	421,790
Gross Unrealized Gains	208	470
Gross Unrealized Losses	(65)	(191)
Fair Value	352,990	422,069
Money market funds
Included in cash and cash equivalents:
Amortized Cost	36,295	45,215
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	36,295	45,215
Restricted cash:
Restricted cash	1,597	1,587
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	1,597	1,587
Commercial paper
Included in cash and cash equivalents:
Amortized Cost	2,487	4,978
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(1)	(1)
Fair Value	2,486	4,977
Certificate of deposit
Restricted cash:
Restricted cash	273	273
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	273	273
U.S. Treasury securities (due in less than one year)
Marketable securities:
Amortized Cost	22,763	7,937
Gross Unrealized Gains	22	22
Gross Unrealized Losses	0	0
Fair Value	22,785	7,959
U.S. Treasury securities (due in 1 to 2 years)
Marketable securities:
Amortized Cost	0	22,620
Gross Unrealized Gains	0	1
Gross Unrealized Losses	0	(11)
Fair Value	0	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	0	0
Fair Value	4,000	8,748
Commercial paper (due in less than one year)
Marketable securities:
Amortized Cost	121,546	180,131
Gross Unrealized Gains	4	150
Gross Unrealized Losses	(40)	(56)
Fair Value	121,510	180,225
Corporate notes (due in less than one year)
Marketable securities:
Amortized Cost	161,837	130,361
Gross Unrealized Gains	133	284
Gross Unrealized Losses	(17)	(27)
Fair Value	161,953	130,618
Corporate notes (due in one to two years)
Marketable securities:
Amortized Cost	42,701	72,000
Gross Unrealized Gains	49	6
Gross Unrealized Losses	(8)	(97)
Fair Value	$ 42,742	$ 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 equivalent restricted as to withdrawal or usage, classified as current. Cash includes, but is not limited to, currency on hand, demand deposit with financial institution, and account with general characteristic of demand deposit. Cash equivalent includes, but is not limited to, short-term, highly liquid investment that is both readily convertible to known amount of cash and so near maturity that it presents insignificant risk of change in value because of change in interest rate.

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The aggregate value of all restricted investments.

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