Cash and Cash Equivalents and Investments (Tables)

9 Months Ended

Sep. 30, 2022

Cash and Cash Equivalents and Investments [Abstract]

Schedule of Cash, Cash Equivalents and Short-term Investments [Table Text Block]

	As of September 30, 2022
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
	(in thousands)
Cash and cash equivalents	$	18,834	$	—	$	—	$	18,834
Securities maturing within one year:
U.S. treasury securities	97,984		—		(385)		97,599
Corporate debt securities	19,876		1		(107)		19,770
Total short-term investments	$	117,860	$	1	$	(492)	$	117,369
Total cash and cash equivalents and investments	$	136,694	$	1	$	(492)	$	136,203
	As of December 31, 2021
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
			(in thousands)
Cash and cash equivalents	$	64,066	$	—	$	(1)	$	64,065
Securities maturing within one year:
U.S. treasury securities	7,562		—		(1)		7,561
Corporate debt securities	15,125		—		(8)		15,117
Total short-term investments	$	22,687	$	—	$	(9)	$	22,678
Total cash and cash equivalents and investments	$	86,753	$	—	$	(10)	$	86,743