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Marketable Securities (Tables)

9 Months Ended

Sep. 30, 2023

Marketable Securities

Schedule of marketable debt securities, classified as available-for-sale


		Amortized			Gross Unrealized			Gross Unrealized			Fair
		Cost			Gains			Losses			Value

		(In thousands)
September 30, 2023
Marketable securities
U.S. government and municipal obligations
Maturing in one year or less		$	89,878		$	—		$	(186)		$	89,692
Maturing after one year through three years			7,880			—			(44)			7,836
Total U.S. government and municipal obligations		$	97,758		$	—		$	(230)		$	97,528
Corporate debt securities
Maturing in one year or less		$	86,866		$	2		$	(96)		$	86,772
Maturing after one year through three years			30,052			—			(138)			29,914
Total corporate debt securities		$	116,918		$	2		$	(234)		$	116,686
Total marketable securities		$	214,676		$	2		$	(464)		$	214,214


		Amortized			Gross Unrealized			Gross Unrealized			Fair
		Cost			Gains			Losses			Value

		(In thousands)
December 31, 2022
Marketable securities
U.S. government and municipal obligations
Maturing in one year or less		$	97,246		$	5		$	(369)		$	96,882
Maturing after one year through three years			—			—			—			—
Total U.S. government and municipal obligations		$	97,246		$	5		$	(369)		$	96,882
Corporate debt securities
Maturing in one year or less		$	179,613		$	—		$	(972)		$	178,641
Maturing after one year through three years			—			—			—			—
Total corporate debt securities		$	179,613		$	—		$	(972)		$	178,641
Total marketable securities		$	276,859		$	5		$	(1,341)		$	275,523