Marketable Debt Securities

9 Months Ended

Sep. 30, 2020

Investments Debt And Equity Securities [Abstract]

Marketable Debt Securities

5. Marketable Debt Securities

The following table summarizes the Company’s marketable debt securities (in thousands):

	September 30, 2020
	Amortized Cost		Unrealized Losses		Unrealized Gains		Fair Value
Asset-backed securities	$	14,639	$	—	$	50	$	14,689
Corporate debt securities		5,700		—		22		5,722
Commercial paper		2,738		—		11		2,749
Total	$	23,077	$	—	$	83	$	23,160

	December 31, 2019
	Amortized Cost		Unrealized Losses			Unrealized Gains		Fair Value
Asset-backed securities	$	19,589	$	(1	)	$	10	$	19,598
Corporate debt securities		19,387		(3	)		9		19,393
Commercial paper		17,882		—			11		17,893
U.S. Government agency bonds		5,500		(3	)		—		5,497
Total	$	62,358	$	(7	)	$	30	$	62,381

The following table summarizes the classification of the Company’s marketable debt securities in the condensed consolidated balance sheets (in thousands):

	September 30,		December 31,
	2020		2019
Short-term marketable debt securities		23,160		51,793
Long-term marketable debt securities		—		10,588
Total	$	23,160	$	62,381