Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2020

Fair Value Disclosures [Abstract]

Summary of Financial Assets Measured at Fair Value on Recurring Basis

The following tables summarize the Company’s financial assets measured at fair value on a recurring basis as of December 31, 2020 and 2019 and by level within the fair value hierarchy:

Fair value measurement as of December 31, 2020:

			Quoted prices in		Significant other		Significant
Financial assets			active markets for		observable		unobservable
			identical assets		inputs		inputs
Type of Instrument	Total		(Level 1)		(Level 2)		(Level 3)
Cash and cash equivalents:
Money market funds and checking accounts	$	31,683	$	31,683	$	—	$	—
Available-for-sale marketable securities:
U.S. Treasury securities		20,750		—		20,750		—
U.S. government agency obligations		22,128		—		22,128		—
Corporate bonds		49,118		—		49,118		—
Commercial paper		116,127		—		116,127		—
Municipal bonds		11,684		—		11,684		—
Restricted cash:
Commercial money market account		408		408		—		—
Total financial assets	$	251,898	$	32,091	$	219,807	$	—

Fair value measurement as of December 31, 2019:

			Quoted prices in		Significant other		Significant
Financial assets			active markets for		observable		unobservable
			identical assets		inputs		inputs
Type of Instrument	Total		(Level 1)		(Level 2)		(Level 3)
Cash and cash equivalents:
Money market funds and checking accounts	$	18,305	$	18,305	$	—	$	—
Available-for-sale marketable securities:
U.S. Treasury securities		16,081		—		16,081		—
U.S. government agency obligations		25,816		—		25,816		—
Corporate bonds		115,890		—		115,890		—
Commercial paper		38,573		—		38,573		—
Municipal bonds		3,500		—		3,500		—
Restricted cash:
Commercial money market account		408		408		—		—
Total financial assets	$	218,573	$	18,713	$	199,860	$	—