Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2022

Fair Value Disclosures [Abstract]

Assets and Liabilities Carried at Fair Value Measured on Recurring Basis

The following tables summarize the Company’s assets by significant categories carried at fair value measured on a recurring basis at March 31, 2022 and December 31, 2021 by valuation hierarchy (in thousands):

	March 31, 2022
	Carrying Value		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value		Cash Equivalents		Marketable Securities
Level 1:
Money market funds	$	87,731	$	—	$	—		$	87,731	$	87,731	$	—
Subtotal	$	87,731	$	—	$	—		$	87,731	$	87,731	$	—
Level 2:
Commercial paper	$	45,887	$	—	$	—		$	45,887	$	—	$	45,887
U.S. treasury securities		43,405		—		(53	)		43,352		—		43,352
Subtotal	$	89,292	$	—	$	(53	)	$	89,239	$	—	$	89,239
Total	$	177,023	$	—	$	(53	)	$	176,970	$	87,731	$	89,239

	December 31, 2021
	Carrying Value		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value		Cash Equivalents		Marketable Securities
Level 1:
Money market funds	$	155,551	$	—	$	—	$	155,551	$	155,551	$	—
Subtotal	$	155,551	$	—	$	—	$	155,551	$	155,551	$	—
Level 2:
Commercial paper	$	49,514	$	—	$	—	$	49,514	$	16,549	$	32,965
Subtotal	$	49,514	$	—	$	—	$	49,514	$	16,549	$	32,965
Total	$	205,065	$	—	$	—	$	205,065	$	172,100	$	32,965