MARKETABLE SECURITIES (Tables)

3 Months Ended

Mar. 31, 2024

MARKETABLE SECURITIES

Schedule of Available-for-sale Securities

Amortized cost and estimated fair market value of marketable securities classified as available-for-sale (excluding cash equivalents) at March 31, 2024, were as follows:

	Amortized		Gross Unrealized				Estimated Fair
(In thousands)	Cost		Gains		Losses		Market Value
Investments due in 3 months or less:
Corporate securities	$	18,891	$	2	$	(63)	$	18,830
Total		18,891		2		(63)		18,830
Investments due in 4-12 months:
Commercial paper		728		—		—		728
Corporate securities		34,004		6		(206)		33,804
Total		34,732		6		(206)		34,532
Investments due in 12 months or greater:
Corporate securities		189,972		314		(485)		189,801
Total		189,972		314		(485)		189,801
Total marketable securities	$	243,595	$	322	$	(754)	$	243,163

	Amortized		Gross Unrealized				Estimated Fair
(In thousands)	Cost		Gains		Losses		Market Value
Investments due in 3 months or less:
Corporate securities	$	10,688	$	—	$	(42)	$	10,646
Total		10,688		—		(42)		10,646
Investments due in 4-12 months:
Commercial paper		718		—		—		718
Corporate securities		48,680		15		(347)		48,348
Total		49,398		15		(347)		49,066
Investments due in 12 months or greater:
Corporate securities		187,298		952		(322)		187,928
Total		187,298		952		(322)		187,928
Total marketable securities	$	247,384	$	967	$	(711)	$	247,640

Schedule of Available-for-sale Securities in an Unrealized Loss Position

The following table summarizes marketable securities classified as available-for-sale (excluding cash equivalents) in a continuous unrealized loss position for which an allowance for credit losses was not recorded at March 31, 2024:

	Less Than 12 Months				12 Months or Longer				Total
	Estimated		Gross		Estimated		Gross		Estimated		Gross
	Fair Market		Unrealized		Fair Market		Unrealized		Fair Market		Unrealized
(In thousands)	Value		Losses		Value		Losses		Value		Losses
Corporate securities	$	136,703	$	(595)	$	19,309	$	(159)	$	156,012	$	(754)
Total marketable securities	$	136,703	$	(595)	$	19,309	$	(159)	$	156,012	$	(754)