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Marketable Securities (Tables)

3 Months Ended

Mar. 31, 2022

Table Text Block [Abstract]

Summary of Marketable Securities Accounted for Available-for-Sale Securities

The following tables summarize the Company’s marketable securities accounted for as available-for-sale securities (in thousands, except years):

		March 31, 2022
		Maturity		Amortized				Unrealized				Unrealized				Estimated
		(in years)		cost				losses				gains				fair value
US treasury securities		1 or less		$	34,100			$	(279	)		$	1				33,822
Corporate debt securities		1 or less			1,312				(7	)			—				1,305
Commercial paper		1 or less			24,059				—				—				24,059
US treasury securities		1-2			29,890				(666	)			—				29,224
Total				$	89,361			$	(952	)		$	1			$	88,410

		December 31, 2021
		Maturity		Amortized				Unrealized				Unrealized				Estimated
		(in years)		cost				losses				gains				fair value
US treasury securities		1 or less		$	18,116			$	(19	)		$	—			$	18,097
Corporate debt securities		1 or less			2,824				(2	)			—				2,822
Commercial paper		1 or less			31,566				—				—				31,566
Supranational debt securities		1 or less			1,503				—				—				1,503
US treasury securities		1-2			44,911				(141	)			—				44,770
Total				$	98,920			$	(162	)		$	—			$	98,758

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- Definition

Tabular disclosure of marketable securities. This may consist of investments in certain debt and equity securities, short-term investments and other assets.

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