MARKETABLE SECURITIES

12 Months Ended

Dec. 31, 2021

Marketable Securities Abstract

MARKETABLE SECURITIES

5. MARKETABLE SECURITIES:

Amortized cost and estimated fair market value of marketable securities classified as available-for-sale (excluding cash equivalents) at December 31, 2021, were as follows:

	Amortized		Gross Unrealized				Estimated Fair
(In thousands)	Cost		Gains		Losses		Market Value
Investments due in 3 months or less:
Commercial paper	$	89,965	$	—	$	—	$	89,965
Corporate securities		7,285		—		(3)		7,282
Total		97,250		—		(3)		97,247
Investments due in 4-12 months:
Corporate securities		25,054		—		(42)		25,012
Total		25,054		—		(42)		25,012
Investments due in 12 months or greater:
Corporate securities		251,096		21		(1,141)		249,976
Total		251,096		21		(1,141)		249,976
Total marketable securities	$	373,400	$	21	$	(1,186)	$	372,235

Accrued interest receivable was $1.5 million at December 31, 2021 and was recorded within prepaid expenses and other current assets on the condensed consolidated balance sheet.

Amortized cost and estimated fair market value of marketable securities classified as available-for-sale (excluding cash equivalents) at December 31, 2020, were as follows:

	Amortized		Gross Unrealized				Estimated Fair
(In thousands)	Cost		Gains		Losses		Market Value
Investments due in 3 months or less:
Commercial paper	$	43,660	$	—	$	—	$	43,660
Corporate securities		19,846		44		—		19,890
Total		63,506		44		—		63,550
Investments due in 4-12 months:
Corporate securities		125,922		846		—		126,768
Total		125,922		846		—		126,768
Total marketable securities	$	189,428	$	890	$	—	$	190,318

The Company did not have any investments due in twelve months or greater as of December 31, 2020. Accrued interest receivable was $0.8 million at December 31, 2020 and was recorded within prepaid expenses and other current assets on the condensed consolidated balance sheet.

As of December 31, 2021, the Company had no marketable securities classified as available-for-sale (excluding cash equivalents) in a continuous unrealized loss position for which an allowance for credit losses was recorded. 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 December 31, 2021:

	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	$	274,380	$	(1,186)	$	—	$	—	$	274,380	$	(1,186)
Total marketable securities	$	274,380	$	(1,186)	$	—	$	—	$	274,380	$	(1,186)

As of December 31, 2020, the Company had no marketable securities classified as available-for-sale (excluding cash equivalents) in a continuous unrealized loss position for which an allowance for credit losses was recorded. 

The weighted average interest rate of investments at December 31, 2021 and 2020, was approximately 0.45% and 0.89%, respectively. In the year ended December 31, 2021 and 2020, no unrealized losses on marketable securities were recognized in income.