Marketable Securities (Tables)

3 Months Ended

Mar. 31, 2021

Investments, Debt and Equity Securities [Abstract]

Schedule of investments classified as available-for-sale

Marketable securities classified as available-for-sale as of March 31, 2021 and December 31, 2020 were comprised of (in thousands):

	March 31, 2021								December 31, 2020
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value		Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
Treasury securities	$	—	$	—	$	—	$	—	$	10,038	$	—	$	(2)	$	10,036
Corporate debt securities	2,250		—		—		2,250		127,003		13		(3)		127,013
Agency securities	—		—		—		—		20,599		1		—		20,600
Total marketable securities	$	2,250	$	—	$	—	$	2,250	$	157,640	$	14	$	(5)	$	157,649