Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2022

Fair Value Disclosures [Abstract]

Schedule of Assets Measured at Fair Value on Recurring Basis

Assets measured at fair value on a recurring basis are as follows (in thousands):

			Fair Value Measurements Using
	Total		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
As of March 31, 2022
Assets:
Current:
Cash equivalents	$	8,088	$	8,088	$	—	$	—
Available-for-sale investments:
Commercial paper		26,828		—		26,828		—
Corporate debt securities		50,671		—		50,671		—
Municipal bonds		12,843		—		12,843		—
Total available-for-sale investments		90,342		—		90,342		—
Total assets measured at fair value	$	98,430	$	8,088	$	90,342	$	—

			Fair Value Measurements Using
	Total		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
As of December 31, 2021
Assets:
Current:
Cash equivalents	$	2,052	$	2,052	$	—	$	—
Available-for-sale investments:
Commercial paper		36,921		—		36,921		—
Corporate debt securities		55,713		—		55,713		—
Municipal bonds		12,941		—		12,941		—
Total available-for-sale investments		105,575		—		105,575		—
Total assets measured at fair value	$	107,627	$	2,052	$	105,575	$	—

Schedule of Available-for-sale Investments

As of March 31, 2022 and December 31, 2021, available-for-sale investments are detailed as follows (in thousands):

		March 31, 2022
	Contractual Maturity	Gross Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Market Value
Available-for-sale investments:
Commercial paper	Within 1 year	$	26,972	$	—	$	(144	)	$	26,828
Corporate debt securities	1 to 2 years		51,152		—		(481	)		50,671
Municipal bonds	1 to 2 years		12,927		—		(84	)		12,843
		$	91,051	$	—	$	(709	)	$	90,342

		December 31, 2021
	Contractual Maturity	Gross Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Market Value
Available-for-sale investments:
Commercial paper	Within 1 year	$	36,956	$	—	$	(35	)	$	36,921
Corporate debt securities	1 to 2 years		55,859		—		(146	)		55,713
Municipal bonds	1 to 2 years		12,973		—		(32	)		12,941
		$	105,788	$	—	$	(213	)	$	105,575