Short-Term Investments

12 Months Ended

Dec. 31, 2021

Cash Cash Equivalents And Short Term Investments [Abstract]

Short-Term Investments

Note 6. Short-Term Investments

The following tables summarize short-term investments (in thousands):

	As of December 31, 2021
			Unrealized
	Amortized Cost		Gains		Losses			Estimated Fair Value
Commercial paper	$	16,991	$	1	$	(5	)	$	16,987
U.S. government and agency securities		10,531		—		(1	)		10,530
Total short-term investments	$	27,522	$	1	$	(6	)	$	27,517

	As of December 31, 2020
			Unrealized
	Amortized Cost		Gains		Losses			Estimated Fair Value
Commercial paper	$	27,136	$	—	$	—		$	27,136
Corporate debt securities		26,510		—		(4	)		26,506
U.S. government and agency securities		18,136		5		—			18,141
Total short-term investments	$	71,782	$	5	$	(4	)	$	71,783

The following table summarizes the maturities of the Company’s short-term investments at December 31, 2021 (in thousands):

	Amortized Cost		Estimated Fair Value
Due in one year or less	$	27,522	$	27,517
Total short-term investments	$	27,522	$	27,517