Marketable Securities (Tables)

6 Months Ended

Jun. 30, 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 June 30, 2023 and December 31, 2022 at net book value:

	June 30, 2023
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
	(In thousands)
Marketable securities:
U.S. Treasury and other government securities	$	369,427	$	9	$	(1,134	)	$	368,302
Financial institution debt securities		417,802		59		(691	)		417,170
Corporate debt securities		79,251		2		(311	)		78,942
Other asset-backed securities		36,056		-		(189	)		35,867
Total	$	902,536	$	70	$	(2,325	)	$	900,281
	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