MARKETABLE SECURITIES (Tables)

3 Months Ended

Mar. 31, 2023

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, 2023, were as follows:

	Amortized		Gross Unrealized				Estimated Fair
(In thousands)	Cost		Gains		Losses		Market Value
Investments due in 3 months or less:
Corporate securities	$	72,749	$	—	$	(348)	$	72,401
Total		72,749		—		(348)		72,401
Investments due in 4-12 months:
Corporate securities		111,179		—		(2,375)		108,804
Total		111,179		—		(2,375)		108,804
Investments due in 12 months or greater:
Corporate securities		83,662		324		(752)		83,234
Total		83,662		324		(752)		83,234
Total marketable securities	$	267,590	$	324	$	(3,475)	$	264,439

Amortized cost and estimated fair market value of marketable securities classified as available-for-sale (excluding cash equivalents) at December 31, 2022, were as follows:

	Amortized		Gross Unrealized				Estimated Fair
(In thousands)	Cost		Gains		Losses		Market Value
Investments due in 3 months or less:
Corporate securities	$	21,803	$	—	$	(135)	$	21,668
Total		21,803		—		(135)		21,668
Investments due in 4-12 months:
Corporate securities		173,833		—		(4,019)		169,814
Total		173,833		—		(4,019)		169,814
Investments due in 12 months or greater:
Corporate securities		58,128		71		(1,240)		56,959
Total		58,128		71		(1,240)		56,959
Total marketable securities	$	253,764	$	71	$	(5,394)	$	248,441

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

	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	$	36,014	$	(288)	$	175,733	$	(3,187)	$	211,747	$	(3,475)
Total marketable securities	$	36,014	$	(288)	$	175,733	$	(3,187)	$	211,747	$	(3,475)