Marketable Securities

9 Months Ended

Sep. 30, 2021

Investments, Debt and Equity Securities [Abstract]

Marketable Securities

MARKETABLE SECURITIES

The Company's investments in marketable securities are stated at fair value and are available-for-sale. The following table summarizes the Company's investments in marketable securities:

	September 30, 2021
	Maturity	Gross Amortized Cost		Total Unrealized Gains		Total Unrealized Losses		Fair Value
Short-term marketable securities
Commercial paper	Within one year	$	141,157	$	13	$	(13)	$	141,157
Corporate bonds	Within one year	160,942		39		(49)		160,932
Municipal bonds	Within one year	5,800		5		—		5,805
Total		$	307,899	$	57	$	(62)	$	307,894
Long-term marketable securities
Corporate bonds	Within one - five years	$	142,395	$	17	$	(82)	$	142,330
Municipal bonds	Within one - five years	8,692		—		(7)		8,685
Total		$	151,087	$	17	$	(89)	$	151,015

	December 31, 2020
	Maturity	Gross Amortized Cost		Total Unrealized Gains		Total Unrealized Losses		Fair Value
Short-term marketable securities
Commercial paper	Within one year	$	48,685	$	31	$	(2)	$	48,714
Corporate bonds	Within one year	78,282		45		(18)		78,309
U.S. Treasury bills	Within one year	19,995		2		—		19,997
Municipal bonds	Within one year	2,500		1		—		2,501
Total		$	149,462	$	79	$	(20)	$	149,521
Long-term marketable securities
Corporate bonds	Within one - five years	$	91,694	$	35	$	(40)	$	91,689
U.S. Treasury bills	Within one - five years	25,000		1		(5)		24,996
Municipal bonds	Within one - five years	3,335		2		—		3,337
Total		$	120,029	$	38	$	(45)	$	120,022