Investments (Tables)

12 Months Ended

Dec. 31, 2021

Investments, Debt and Equity Securities [Abstract]

Schedule of Cash, Cash Equivalents and Investments

Cash, cash equivalents and investments as of December 31, 2021 included the following:

			GROSS		GROSS
	AMORTIZED		UNREALIZED		UNREALIZED		FAIR
(in thousands)	COST		GAINS		LOSSES		VALUE
Cash and cash equivalents:
Cash and cash equivalents	$	37,187	$	—	$	—	$	37,187
Total cash and cash equivalents	$	37,187	$	—	$	—	$	37,187
Investments:
Certificates of deposit (due within 1 year)	$	9,047	$	—	$	(9)	$	9,038
Commercial paper (due within 1 year)	50,975		—		(55)		$	50,920
Corporate bonds (due within 1 year)	42,718		—		(62)		42,656
U.S. Government and government agencies (due within 1 year)			—				—
Total investments	$	102,740	$	—	$	(126)	$	102,614
Total cash, cash equivalents and investments	$	139,927	$	—	$	(126)	$	139,801

Cash, cash equivalents and investments as of December 31, 2020 included the following:

			GROSS		GROSS
	AMORTIZED		UNREALIZED		UNREALIZED		FAIR
(in thousands)	COST		GAINS		LOSSES		VALUE
Cash and cash equivalents:
Cash and cash equivalents	$	151,570	$	—	$	—	$	151,570
Total cash and cash equivalents	$	151,570	$	—	$	—	$	151,570
Investments:
Commercial paper (due within 1 year)	$	44,122	$	5	$	(23)	$	44,104
Corporate bonds (due within 1 year)	44,724		3		(37)		44,690
Total investments	$	88,846	$	8	$	(60)	$	88,794
Total cash, cash equivalents and investments	$	240,416	$	8	$	(60)	$	240,364