Investments (Tables)

6 Months Ended

Jun. 30, 2022

Investments [Abstract]

Investments consists of available-for-sale securities

Investments consists of available-for-sale securities as follows (in thousands):

	June 30, 2022
	Amortized Cost		Unrealized Gain		Unrealized Loss			Estimated Fair Value
Short-term marketable securities:
Commercial paper	$	44,943	$	—	$	(1	)	$	44,942
U.S. government debt securities		21,518		—		(164	)		21,354
Corporate bonds		24,319		—		(266	)		24,053
Total short-term marketable securities	$	90,780	$	—	$	(431	)	$	90,349
Long-term marketable securities:
U.S. government debt securities	$	—	$	—	$	—		$	—
Corporate bonds		11,874		—		(173	)		11,701
Total long-term marketable securities	$	11,874	$	—	$	(173	)	$	11,701

	December 31, 2021
	Amortized Cost		Unrealized Gain		Unrealized Loss			Estimated Fair Value
Short-term marketable securities:
Commercial paper	$	54,363	$	—	$	(1	)	$	54,362
Corporate bonds		35,231		—		(35	)		35,196
Total short-term marketable securities	$	89,594	$	—	$	(36	)	$	89,558
Long-term marketable securities:
U.S. government debt securities	$	3,996	$	—	$	(17	)	$	3,979
Corporate bonds		21,010		—		(70	)		20,940
Total long-term marketable securities	$	25,006	$	—	$	(87	)	$	24,919

Investments in a continual unrealized loss position

Investments in a continual unrealized loss position for less than 12 months consist of the following (in thousands):

	June 30, 2022		December 31, 2021
	Fair Value		Fair Value
Corporate bonds	$	35,753	$	60,114
U.S. Government debt securities		21,354		—
Commercial Paper		3,999		3,995
Total available-for-sale securities	$	61,106	$	64,109