Marketable Debt Securities (Tables)

3 Months Ended

Mar. 31, 2023

Marketable Debt Securities [Abstract]

Schedule of marketable debt securities

	March 31, 2023
	Amortized Cost		Unrealized Gains		Unrealized Losses(a)			Estimated Fair Value
Corporate bonds - presented in marketable debt securities	$	66,042	$	5	$	(472	)	$	65,575
Corporate bonds - presented in marketable debt securities, non-current		2,895		-		(2	)		2,893
Total	$	68,937	$	5	$	(474	)	$	68,468

(a) The unrealized loss of $474 is comprised of bonds with losses sustained for greater than 12 months of $360 and of bonds with losses sustained for less than 12 months of $114.

	December 31, 2022
	Amortized Cost		Unrealized Gains		Unrealized Losses			Estimated Fair Value
Corporate bonds - presented in marketable debt securities	$	60,790	$	-	$	(547	)	$	60,243
Corporate bonds - presented in marketable debt securities, non-current		18,027		-		(141	)		17,886
Total	$	78,817	$	-	$	(688	)	$	78,129

Schedule of interest and investment income

	For the Three Months Ended March 31,
	2023		2022
Interest income	$	605	$	529
Accretion/(amortization) of discount/premium, net		82		(410	)
Total interest and investment income	$	687	$	119