Marketable Securities (Tables)

9 Months Ended

Sep. 30, 2022

Marketable securities

Schedule of the fair value of available-for-sale marketable debt securities by type of security

		September 30, 2022
				Gross		Gross
		Amortized		Unrealized		Unrealized		Fair
(in thousands)		Cost		Gain		Loss		Value
Assets
Marketable securities:
U.S. Treasury notes	$	94,657	$	—	$	(742)	$	93,915
	$	94,657	$	—	$	(742)	$	93,915

		December 31, 2021
				Gross		Gross
		Amortized		Unrealized		Unrealized		Fair
(in thousands)		Cost		Gain		Loss		Value
Assets
Marketable securities:
U.S. Treasury notes	$	110,747	$	—	$	(202)	$	110,545
	$	110,747	$	—	$	(202)	$	110,545