Marketable Securities (Tables)

3 Months Ended

Mar. 31, 2023

Investments, Debt and Equity Securities [Abstract]

Summary of Available-for-sale Marketable Securities

The following table summarizes the Company’s available-for-sale marketable securities as of March 31, 2023 and December 31, 2022 at net book value:

	March 31, 2023
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
	(In thousands)
Marketable securities:
U.S. Treasury and other government securities	$	261,410	$	587	$	(460	)	$	261,537
Financial institution debt securities		460,173		69		(740	)		459,502
Corporate debt securities		107,111		52		(140	)		107,023
Other asset-backed securities		36,509		81		(222	)		36,368
Total	$	865,203	$	789	$	(1,562	)	$	864,430
	December 31, 2022
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
	(In thousands)
Marketable securities:
U.S. Treasury and other government securities	$	244,562	$	62	$	(1,938	)	$	242,686
Financial institution debt securities		380,891		-		(1,030	)		379,861
Corporate debt securities		102,059		-		(509	)		101,550
Other asset-backed securities		14,703		-		(346	)		14,357
Total	$	742,215	$	62	$	(3,823	)	$	738,454