Available-for-sale Securities (Tables)

3 Months Ended

Mar. 31, 2022

Investments, Debt and Equity Securities [Abstract]

Summary of Available-for-Sale Securities

The following table summarizes the Company’s available-for-sale securities (in thousands):

	March 31, 2022
	Amortized Cost		Gross Unrealized Gain		Gross Unrealized Loss			Fair Value
Available-for-sale securities:
US Treasury securities	$	109,009	$	—	$	(430	)	$	108,579
Agency bonds		15,105		—		(26	)		15,079
Total available-for-sale securities	$	124,114	$	—	$	(456	)	$	123,658
Available-for-sale securities, long-term:
US Treasury securities	$	5,074	$	—	$	(71	)	$	5,003
Total available-for-sale securities, long-term	$	5,074	$	—	$	(71	)	$	5,003

	December 31, 2021
	Amortized Cost		Gross Unrealized Gain		Gross Unrealized Loss			Fair Value
Available-for-sale securities:
US Treasury securities	$	61,450	$	—	$	(77	)	$	61,373
Corporate debt securities		33,814		—		(8	)		33,806
Agency bonds		15,123		—		(9	)		15,114
Commercial paper		1,999		—		—			1,999
Total available-for-sale securities	$	112,386	$	—	$	(94	)	$	112,292
Available-for-sale securities, long-term:
US Treasury securities	$	13,585	$	—	$	(38	)	$	13,547
Total available-for-sale securities	$	13,585	$	—	$	(38	)	$	13,547