Available-for-Sale Marketable Securities (Tables)

3 Months Ended

Mar. 31, 2022

Investments Debt And Equity Securities [Abstract]

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

As of March 31, 2022

			Gross Unrealized				Estimated Fair
Type of Security	Amortized Cost		Gains		Losses		Value
U.S. Treasury securities	$	15,577	$	—	$	(27)	$	15,550
U.S. government agency obligations		12,000		—		(370)		11,630
Corporate bonds		66,765		—		(740)		66,025
Commercial paper		72,952		—		(163)		72,789
Municipal bonds		22,634		—		(423)		22,211
Total available-for-sale marketable securities	$	189,928	$	—	$	(1,723)	$	188,205

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 March 31, 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	$	15,550	$	(27)	$	—	$	—	$	15,550	$	(27)
U.S. government agency obligations		9,687		(313)		1,943		(57)		11,630		(370)
Corporate bonds		61,610		(644)		4,415		(96)		66,025		(740)
Commercial paper		72,789		(163)		—		—		72,789		(163)
Municipal bonds		21,213		(396)		998		(27)		22,211		(423)
Total	$	180,849	$	(1,543)	$	7,356	$	(180)	$	188,205	$	(1,723)

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 March 31, 2022				As of December 31, 2021
Contractual maturity	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Less than one year	$	120,070	$	119,749	$	153,631	$	153,582
One year to three years		69,858		68,456		70,063		69,754
Total	$	189,928	$	188,205	$	223,694	$	223,336