Marketable Securities (Tables)

6 Months Ended

Jun. 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)
June 30, 2023
Marketable securities
U.S. government and municipal obligations
Maturing in one year or less	$	96,632	$	—	$	(268)	$	96,364
Maturing after one year through three years		10,716		—		(34)		10,682
Total U.S. government and municipal obligations	$	107,348	$	—	$	(302)	$	107,046
Corporate debt securities
Maturing in one year or less	$	73,263	$	1	$	(144)	$	73,120
Maturing after one year through three years		44,387		1		(81)		44,307
Total corporate debt securities	$	117,650	$	2	$	(225)	$	117,427
Total marketable securities	$	224,998	$	2	$	(527)	$	224,473
	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