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FAIR VALUE MEASUREMENTS - SECURITY TYPE (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Included in cash and cash equivalents:
Amortized Cost	$ 34,417	$ 39,771
Estimated Fair Value	34,417	39,771
Restricted cash:
Amortized Cost	535	364
Estimated Fair Value	535	364
Marketable securities:
Amortized Cost	343,708	116,142
Gross Unrealized Gains	28	6
Gross Unrealized Losses	(980)	(247)
Estimated Fair Value	342,756	115,901
Money market funds
Included in cash and cash equivalents:
Amortized Cost	34,417	39,771
Estimated Fair Value	34,417	39,771
Restricted cash:
Amortized Cost	263	93
Estimated Fair Value	263	93
Certificate of deposit
Restricted cash:
Amortized Cost	272	271
Estimated Fair Value	272	271
U.S. Treasury securities (due in less than one year)
Marketable securities:
Amortized Cost		12,983
Gross Unrealized Losses		(62)
Estimated Fair Value		12,921
Municipal securities (due in less than one year)
Marketable securities:
Amortized Cost		3,000
Gross Unrealized Losses		(24)
Estimated Fair Value		2,976
Government-sponsored enterprise securities (due in less than one year)
Marketable securities:
Amortized Cost	78,280	9,860
Gross Unrealized Gains	20
Gross Unrealized Losses	(224)	(14)
Estimated Fair Value	78,076	9,846
Government-sponsored enterprise securities (due in one to two years)
Marketable securities:
Amortized Cost	18,680
Gross Unrealized Losses	(141)
Estimated Fair Value	18,539
Commercial paper (due in less than one year)
Marketable securities:
Amortized Cost	202,540	64,285
Gross Unrealized Gains	7	6
Gross Unrealized Losses	(365)	(92)
Estimated Fair Value	202,182	64,199
Corporate notes (due in less than one year)
Marketable securities:
Amortized Cost	34,354	26,014
Gross Unrealized Gains	1
Gross Unrealized Losses	(138)	(55)
Estimated Fair Value	34,217	$ 25,959
Corporate notes (due in one to two years)
Marketable securities:
Amortized Cost	9,854
Gross Unrealized Losses	(112)
Estimated Fair Value	$ 9,742

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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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