Marketable Debt Securities

12 Months Ended

Dec. 31, 2021

Investments, Debt and Equity Securities [Abstract]

Marketable Debt Securities

5. Marketable Debt Securities

The following tables summarize the Company’s marketable debt securities (in thousands):

	December 31, 2020
	Amortized Cost		Unrealized Losses		Unrealized Gains		Fair Value
Asset-backed securities	$	7,507	$	—	$	15	$	7,522
Corporate debt securities		1,754		—		8		1,762
Commercial paper		999		—		1		1,000
Total	$	10,260	$	—	$	24	$	10,284

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

	December 31,
	2021		2020
Short-term marketable debt securities	$	—	$	10,284
Long-term marketable debt securities		—		—
Total	$	—	$	10,284