Marketable Debt Securities (Tables)

12 Months Ended

Dec. 31, 2020

Investments Debt And Equity Securities [Abstract]

Schedule of 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

	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

Schedule of Company’s Marketable Debt Securities by Contractual Maturity

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

	December 31, 2020
	Amortized Cost		Fair Value
Within one year	$	10,260	$	10,284
After one year through five years		—		—
After five years		—		—
Total	$	10,260	$	10,284

Summary of Classification of Marketable Debt Securities in Consolidated Balance Sheets

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

	December 31
	2020		2019
Short-term marketable debt securities	$	10,284	$	51,793
Long-term marketable debt securities		—		10,588
Total	$	10,284	$	62,381