Short-Term Investments (Tables)

9 Months Ended

Sep. 30, 2021

Short Term Investments [Abstract]

Summary of Short-Term Investments

The following tables summarize short-term investments (in thousands):

	As of September 30, 2021
			Unrealized
	Amortized Cost		Gains		Losses			Estimated Fair Value
Commercial paper	$	27,985	$	3	$	(1	)	$	27,987
Corporate debt securities		1,405		—		(1	)		1,404
U.S. government and agency securities		15,307		2		(1	)		15,308
Total short-term investments	$	44,697	$	5	$	(3	)	$	44,699

	As of December 31, 2020
			Unrealized
	Amortized Cost		Gains		Losses			Estimated Fair Value
Commercial paper	$	27,136	$	—	$	—		$	27,136
Corporate debt securities		26,510		—		(4	)		26,506
U.S. government and agency securities		18,136		5		—			18,141
Total short-term investments	$	71,782	$	5	$	(4	)	$	71,783

Summary of Maturities of Short-Term Investments

The following table summarizes the maturities of the Company’s short-term investments at September 30, 2021 (in thousands):

	Amortized Cost		Estimated Fair Value
Due in one year or less	$	44,697	$	44,699
Total short-term investments	$	44,697	$	44,699