Marketable Securities (Tables)

6 Months Ended

Jun. 30, 2022

Table Text Block [Abstract]

Summary of Marketable Securities Accounted for Available-for-Sale Securities

The following tables summarize the Company’s marketable securities accounted for as available-for-sale securities (in thousands, except years):

	June 30, 2022
	Maturity	Amortized		Unrealized		Unrealized			Estimated
	(in years)	cost		gains		losses			fair value
US treasury securities	1 or less	$	46,566	$	—	$	(594	)		45,972
Commercial paper	1 or less		23,422		—		—			23,422
Corporate debt securities	1 or less		2,654		—		(15	)		2,639
Yankee debt security	1 or less		801		—		(2	)		799
Supranational debt security	1 or less		639		—		(2	)		637
US treasury securities	1-2		19,923		—		(610	)		19,313
Total		$	94,005	$	—	$	(1,223	)	$	92,782

	December 31, 2021
	Maturity	Amortized		Unrealized		Unrealized			Estimated
	(in years)	cost		gains		losses			fair value
US treasury securities	1 or less	$	18,116	$	—	$	(19	)	$	18,097
Corporate debt securities	1 or less		2,824		—		(2	)		2,822
Commercial paper	1 or less		31,566		—		—			31,566
Supranational debt securities	1 or less		1,503		—		—			1,503
US treasury securities	1-2		44,911		—		(141	)		44,770
Total		$	98,920	$	—	$	(162	)	$	98,758