Investments (Tables)

6 Months Ended

Jun. 30, 2021

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):

	June 30, 2021
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Corporate bonds	$	40,821	$	2	$	(11)	$	40,812
U.S. treasury securities	15,554		1		(8)		15,547
Commercial paper	57,755		6		(1)		57,760
Total investments	$	114,130	$	9	$	(20)	$	114,119
	December 31, 2020
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Corporate bonds	$	3,256	$	2	$	—	$	3,258
U.S. treasury securities	28,717		1		(3)		28,715
Total investments	$	31,973	$	3	$	(3)	$	31,973

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):

	June 30, 2021
	Less than 12 Months				Greater than 12 Months				Total
	Fair Value		Unrealized Loss		Fair Value		Unrealized Loss		Fair Value		Unrealized Loss
Corporate bonds	$	30,714	$	(11)	$	—	$	—	$	30,714	$	(11)
Commercial paper	10,493		(1)		—		—		10,493		(1)
U.S. treasury securities	4,992		(8)		—		—		4,992		(8)
Total	$	46,199	$	(20)	$	—	$	—	$	46,199	$	(20)
Number of securities with unrealized losses			16				—				16
	December 31, 2020
	Less than 12 Months				Greater than 12 Months				Total
	Fair Value		Unrealized Loss		Fair Value		Unrealized Loss		Fair Value		Unrealized Loss
U.S. treasury securities	$	16,598	$	(3)	$	—	$	—	$	16,598	$	(3)
Total	$	16,598	$	(3)	$	—	$	—	$	16,598	$	(3)
Number of securities with unrealized losses			6				—				6

Summary of the scheduled maturity of company investments

The following table summarizes the scheduled maturity for the Company's debt investments at June 30, 2021 (in thousands):

Maturing in one year or less	$	106,584
Maturing after one year through two years	7,535
Total debt investments	$	114,119