FAIR VALUE MEASUREMENTS (Tables)

12 Months Ended

Dec. 31, 2024

Fair Value Disclosures [Abstract]

Schedule of cash equivalents, restricted cash and marketable securities by security type

Cash equivalents, restricted cash and marketable securities by security type at December 31, 2024 were as follows:

			Gross		Gross
	Amortized		Unrealized		Unrealized			Estimated
(In thousands)	Cost		Gains		Losses			Fair Value
Included in cash and cash equivalents:
Money market funds	$	45,215	$	—	$	—		$	45,215
Commercial paper		4,978		—		(1	)		4,977
	$	50,193	$	—	$	(1	)	$	50,192
Restricted cash:
Money market fund	$	1,587	$	—	$	—		$	1,587
Certificate of deposit		273		—		—			273
	$	1,860	$	—	$	—		$	1,860
Marketable securities:
U.S. Treasury securities (due in    less than one year)	$	7,937	$	22	$	—		$	7,959
U.S. Treasury securities (due in    one to two years)		22,620		1		(11	)		22,610
Government-sponsored enterprise securities    (due in less than one year)		8,741		7		—			8,748
Commercial paper (due in less than one year)		180,131		150		(56	)		180,225
Corporate notes (due in less than one year)		130,361		284		(27	)		130,618
Corporate notes (due in one to two years)		72,000		6		(97	)		71,909
	$	421,790	$	470	$	(191	)	$	422,069

Cash equivalents, restricted cash and marketable securities by security type at December 31, 2023 were as follows:

			Gross		Gross
	Amortized		Unrealized		Unrealized			Estimated
(In thousands)	Cost		Gains		Losses			Fair Value
Included in cash and cash equivalents:
Money market funds	$	16,815	$	—	$	—		$	16,815
	$	16,815	$	—	$	—		$	16,815
Restricted cash:
Money market fund	$	843	$	—	$	—		$	843
Certificate of deposit		272		—		—			272
	$	1,115	$	—	$	—		$	1,115
Marketable securities:
U.S. Treasury securities (due in    less than one year)	$	26,752	$	95	$	—		$	26,847
U.S. Treasury securities (due in    one to two years)		2,877		17		—			2,894
Government-sponsored enterprise securities    (due in less than one year)		86,250		43		(92	)		86,201
Government-sponsored enterprise securities    (due in one to two years)		13,598		72		—			13,670
Commercial paper (due in less than one year)		102,270		31		(33	)		102,268
Corporate notes (due in less than one year)		48,409		14		(63	)		48,360
Corporate notes (due in one to two years)		26,628		130		(24	)		26,734
	$	306,784	$	402	$	(212	)	$	306,974

Schedule of cash equivalents and marketable securities with unrealized losses

Cash equivalents and marketable securities with unrealized losses that have been in a continuous unrealized loss position for less than 12 months and 12 months or longer at December 31, 2024 and 2023 were as follows:

	Less Than 12 Months					12 Months or Greater					Total
			Gross					Gross					Gross
	Estimated		Unrealized			Estimated		Unrealized			Estimated		Unrealized
(In thousands)	Fair Value		Losses			Fair Value		Losses			Fair Value		Losses
As of December 31, 2024:
U.S. Treasury securities (due in    less than one year)	$	18,593	$	(10	)	$	—	$	—		$	18,593	$	(10	)
Commercial paper    (due in less than    one year)		66,076		(56	)		—		—			66,076		(56	)
Corporate notes (due in    less than one year)		31,549		(26	)		1,993		(1	)		33,542		(27	)
Corporate notes (due in    one to two years)		53,506		(98	)		—		—			53,506		(98	)
	$	169,724	$	(190	)	$	1,993	$	(1	)	$	171,717	$	(191	)
As of December 31, 2023:
Government-sponsored enterprise securities    (due in less than one year)	$	69,377	$	(92	)	$	—	$	—		$	69,377	$	(92	)
Commercial paper (due in less than one year)		58,622		(33	)		—		—			58,622		(33	)
Corporate notes (due in less than one year)		34,567		(63	)		—		—			34,567		(63	)
Corporate notes (due in one to two years)		3,952		(23	)		—		—			3,952		(23	)
	$	166,518	$	(211	)	$	—	$	—		$	166,518	$	(211	)

Schedule of financial instruments measured at fair value on recurring basis

The following table presents information about our financial instruments that are measured at fair value on a recurring basis as of December 31, 2024 and 2023 and indicates the fair value category assigned.

	Fair Value Measurements at Reporting Date Using
(In thousands)	Level 1		Level 2		Level 3		Total
As of December 31, 2024:
Money market funds(1)(2)	$	46,802	$	—	$	—	$	46,802
Certificate of deposit(2)		273		—		—		273
U.S. Treasury securities(3)(4)		—		30,570		—		30,570
Government-sponsored enterprise securities(3)		—		8,748		—		8,748
Commercial paper(3)		—		185,201		—		185,201
Corporate notes(3)(4)		—		202,527		—		202,527
Total	$	47,075	$	427,046	$	—	$	474,121
As of December 31, 2023:
Money market funds(1)(2)	$	17,658	$	—	$	—	$	17,658
Certificate of deposit(2)		272		—		—		272
U.S. Treasury securities(3)(4)		—		29,742		—		29,742
Government-sponsored enterprise securities(3)(4)		—		99,872		—		99,872
Commercial paper(3)		—		102,268		—		102,268
Corporate notes(3)(4)		—		75,092		—		75,092
Total	$	17,930	$	306,974	$	—	$	324,904

(1)Included in cash and cash equivalents on our consolidated balance sheets.

(2)Included in restricted cash on our consolidated balance sheets.

(3)Included in current portion of marketable securities on our consolidated balance sheets.

(4)Included in noncurrent portion of marketable securities on our consolidated balance sheets.

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