Investments (Tables)

3 Months Ended

Mar. 31, 2022

Investments, Debt and Equity Securities [Abstract]

Summary of short-term and long-term investments

The following tables summarize the Company's debt investments (in thousands):

	March 31, 2022
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Corporate bonds	$	4,968	$	—	$	(6)	$	4,962
U.S. treasury securities	9,537		—		(50)		9,487
Commercial paper	6,989		—		(17)		6,972
Total investments	$	21,494	$	—	$	(73)	$	21,421
	December 31, 2021
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Corporate bonds	$	30,571	$	2	$	(7)	$	30,566
Commercial paper	34,890		2		(5)		34,887
U.S. treasury securities	9,552		—		(13)		9,539
Total investments	$	75,013	$	4	$	(25)	$	74,992

Summary of investments with unrealized losses, aggregated by investment type and the length of time

The following tables summarize the Company's debt investments with unrealized losses, aggregated by investment type and the length of time that individual investments have been in a continuous unrealized loss position (in thousands, except number of securities):

	March 31, 2022
	Less than 12 Months				Greater than 12 Months				Total
	Fair Value		Unrealized Loss		Fair Value		Unrealized Loss		Fair Value		Unrealized Loss
Corporate bonds	$	4,962	$	(6)	$	—	$	—	$	4,962	$	(6)
Commercial paper	6,972		(17)		—		—		6,972		(17)
U.S. treasury securities	9,487		(50)		—		—		9,487		(50)
Total	$	21,421	$	(73)	$	—	$	—	$	21,421	$	(73)
Number of securities with unrealized losses			10				—				10
	December 31, 2021
	Less than 12 Months				Greater than 12 Months				Total
	Fair Value		Unrealized Loss		Fair Value		Unrealized Loss		Fair Value		Unrealized Loss
Corporate bonds	$	28,362	$	(7)	$	—	$	—	$	28,362	$	(7)
Commercial paper	8,991		(5)		—		—		8,991		(5)
U.S. treasury securities	$	9,539	$	(13)	$	—	$	—	$	9,539	$	(13)
Total	$	46,892	$	(25)	$	—	$	—	$	46,892	$	(25)
Number of securities with unrealized losses			18				—				18

Summary of the scheduled maturity of company investments

The following table summarizes the scheduled maturity for the Company's debt investments at March 31, 2022 (in thousands):

Maturing in one year or less	$	21,421
Total debt investments	$	21,421