Investments

12 Months Ended

Dec. 31, 2022

Investments [Abstract]

Investments

Investments 

The following tables summarize the Company’s short-term and long-term debt investments (in thousands):

	December 31, 2022
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Corporate bonds	$	25,906	$	4	$	(29)	$	25,881
Commercial paper	127,657		36		(176)		127,517
U.S. Treasury securities	86,892		7		(179)		86,720
Total investments	$	240,455	$	47	$	(384)	$	240,118

	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

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):

	December 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	$	22,905	$	(29)	$	—	$	—	$	22,905	$	(29)
Commercial paper	88,860		(176)		—		—		88,860		(176)
U.S. Treasury securities	67,489		(179)		—		—		67,489		(179)
Total	$	179,254	$	(384)	$	—	$	—	$	179,254	$	(384)
Number of securities with unrealized losses			55				—				55

	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

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

	December 31, 2022
Maturing in one year or less	$	191,492
Maturing after one year through two years	48,626
Total debt investments	$	240,118