Investments (Tables)

9 Months Ended

Sep. 30, 2021

Investments, Debt and Equity Securities [Abstract]

Schedule of Available-for-Sale Investments

The following tables summarize the Company’s debt securities available-for-sale investments at September 30, 2021 and December 31, 2020 (in thousands):

	September 30, 2021
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
Certificates of deposit	$	1,567	$	—	$	—	$	1,567
Commercial paper	8,267		2		—		8,269
Corporate notes and bonds	10,766		—		(3)		10,763
Total	$	20,600	$	2	$	(3)	$	20,599

	December 31, 2020
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
Certificates of deposit	$	5,820	$	5	$	—	$	5,825
U.S. Treasury securities	5,908		15		—		5,923
Commercial paper	10,603		1		—		10,604
Corporate notes and bonds	9,779		1		(1)		9,779
Total	$	32,110	$	22	$	(1)	$	32,131

Summary of Maturities of Available-for-sale Investments

The following table summarizes the maturities of the Company’s debt securities available-for-sale investments at September 30, 2021 and December 31, 2020 (in thousands):

	September 30, 2021				December 31, 2020
	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Due in less than 1 year	$	20,600	$	20,599	$	32,110	$	32,131