Short-term Investments (Tables)

6 Months Ended

Jun. 30, 2022

Investments, Debt and Equity Securities [Abstract]

Schedule of short-term investments

Short-term investments classified as available-for-sale consisted of the following:

	June 30, 2022
(in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Short-term investments:
US Treasuries	$	60,233	$	—	$	(339	)	$	59,894
Commercial paper		58,434		—		(112	)		58,322
Total short-term investments	$	118,667	$	—	$	(451	)	$	118,216