Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 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 September 30, 2020 and December 31, 2019.

Fair value measurement as of September 30, 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	$	75,281	$	75,281	$	—	$	—
Available-for-sale marketable securities:
U.S. Treasury securities		9,179		—		9,179		—
U.S. government agency obligations		3,507		—		3,507		—
Corporate bonds		42,083		—		42,083		—
Commercial paper		1,325		—		1,325		—
Restricted cash:
Commercial money market account		408		408		—		—
Total financial assets	$	131,783	$	75,689	$	56,094	$	—

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	$	—