Marketable Debt Securities (Tables)

12 Months Ended

Dec. 31, 2021

Marketable Debt Securities [Abstract]

Schedule of marketable debt securities

	December 31, 2021
	Amortized Cost		Unrealized Gains		Unrealized Losses			Estimated Fair Value
Corporate bonds - presented in marketable debt securities	$	55,548	$	-	$	(43	)	$	55,505
Corporate bonds - presented in marketable debt securities, non-current		39,635		-		(168	)		39,467
Total	$	95,183	$	-	$	(211	)	$	94,972

Schedule of investment income

	December 31,
	2021			2020
Interest income	$	1,974		$	500
Accretion/(amortization) of discount/premium, net		(1,737	)		-
Total interest and investment income	$	237		$	500