Marketable Securities (Tables)

9 Months Ended

Sep. 30, 2021

Investments Debt And Equity Securities [Abstract]

Summary of Marketable Securities

The Company’s marketable securities, which consist of highly liquid, investment grade debt securities, are classified as available-for-sale and are stated at fair value. The following tables summarize the Company’s marketable securities (in thousands):

As of September 30, 2021	Maturity (in years)	Amortized Cost		Unrealized Gains		Unrealized Losses			Estimated Fair Value
Corporate debt securities	1 or less	$	3,017	$	—	$	(1	)	$	3,016
Total		$	3,017	$	—	$	(1	)	$	3,016

As of December 31, 2020	Maturity (in years)	Amortized Cost		Unrealized Gains		Unrealized Losses			Estimated Fair Value
Corporate debt securities	1 or less	$	3,612	$	—	$	(2	)	$	3,610
Corporate debt securities	1 - 2		3,072		—		(3	)		3,069
Total		$	6,684	$	—	$	(5	)	$	6,679