Marketable Securities (Tables)

3 Months Ended

Mar. 31, 2023

Marketable Securities

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

	Gross Unrealized
	Amortized						Fair
	Cost		Gains		Losses		Value
	(In thousands)
March 31, 2023
Marketable securities
U.S. government and municipal obligations
Maturing in one year or less	$	81,514	$	47	$	(51)	$	81,510
Maturing after one year through three years		15,064		12		—		15,076
Total U.S. government and municipal obligations	$	96,578	$	59	$	(51)	$	96,586
Corporate debt securities
Maturing in one year or less	$	128,159	$	—	$	(481)	$	127,678
Maturing after one year through three years		—		—		—		—
Total corporate debt securities	$	128,159	$	—	$	(481)	$	127,678
Total marketable securities	$	224,737	$	59	$	(532)	$	224,264
	Gross Unrealized
	Amortized						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