Available-for-Sale Marketable Securities (Tables)

9 Months Ended

Sep. 30, 2022

Available-for-Sale Marketable Securities

Summary of Available-for-Sale Marketable Securities by Major Type of Security

As of September 30, 2022

			Gross Unrealized				Estimated Fair
Type of Security	Amortized Cost		Gains		Losses		Value
U.S. Treasury securities	$	4,004	$	—	$	(7)	$	3,997
U.S. government agency obligations		9,500		—		(646)		8,854
Corporate bonds		39,955		—		(838)		39,117
Commercial paper		62,884		—		(64)		62,820
Municipal bonds		22,527		—		(593)		21,934
Total available-for-sale marketable securities	$	138,870	$	—	$	(2,148)	$	136,722

As of December 31, 2021

			Gross Unrealized				Estimated Fair
Type of Security	Amortized Cost		Gains		Losses		Value
U.S. Treasury securities	$	11,573	$	—	$	(3)	$	11,570
U.S. government agency obligations		17,020		—		(45)		16,975
Corporate bonds		66,495		—		(171)		66,324
Commercial paper		106,914		5		(31)		106,888
Municipal bonds		21,692		—		(113)		21,579
Total available-for-sale marketable securities	$	223,694	$	5	$	(363)	$	223,336

Schedule of Fair Values and Continuous Unrealized Loss Positions of Available-for-Sale Marketable Securities

As of September 30, 2022

	Less than 12 Months				12 Months or Greater				Total
			Gross				Gross				Gross
	Fair		Unrealized		Fair		Unrealized		Fair		Unrealized
	Value		Losses		Value		Losses		Value		Losses
U.S. Treasury securities	$	3,997	$	(7)	$	—	$	—	$	3,997	$	(7)
U.S. government agency obligations		4,646		(354)		4,208		(292)		8,854		(646)
Corporate bonds		23,606		(606)		15,511		(232)		39,117		(838)
Commercial paper		62,820		(64)		—		—		62,820		(64)
Municipal bonds		7,912		(204)		14,022		(389)		21,934		(593)
Total	$	102,981	$	(1,235)	$	33,741	$	(913)	$	136,722	$	(2,148)

As of December 31, 2021

	Less than 12 Months				12 Months or Greater				Total
			Gross				Gross				Gross
	Fair		Unrealized		Fair		Unrealized		Fair		Unrealized
	Value		Losses		Value		Losses		Value		Losses
U.S. Treasury securities	$	11,570	$	(3)	$	—	$	—	$	11,570	$	(3)
U.S. government agency obligations		9,456		(45)		—		—		9,456		(45)
Corporate bonds		62,704		(170)		2,020		(1)		64,724		(171)
Commercial paper		52,163		(31)		—		—		52,163		(31)
Municipal bonds		20,562		(105)		1,017		(8)		21,579		(113)
Total	$	156,455	$	(354)	$	3,037	$	(9)	$	159,492	$	(363)

Schedule of Amortized Cost and Fair Values of Marketable Debt Securities by Contractual Maturity

	As of September 30, 2022				As of December 31, 2021
Contractual maturity	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Less than one year	$	113,967	$	112,806	$	153,631	$	153,582
One year to three years		24,903		23,916		70,063		69,754
Total	$	138,870	$	136,722	$	223,694	$	223,336