Marketable Securities (Tables)

9 Months Ended

Sep. 30, 2022

Investments, Debt and Equity Securities [Abstract]

Schedule of Investments in 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 (in thousands) as of:

		September 30, 2022
	Maturity	Amortized Cost Basis		Gross Unrealized Losses		Fair Value
Short-term marketable securities
U.S. Treasury notes	Within one year	$	109,327	$	(729)	$	108,598
U.S. Government-sponsored enterprise securities	Within one year	114,853		(1,439)		113,414
Total short-term marketable securities		$	224,180	$	(2,168)	$	222,012

		December 31, 2021
	Maturity	Amortized Cost Basis		Gross Unrealized Losses		Fair Value
Short-term marketable securities
U.S. Treasury notes	Within one year	$	226,136	$	(344)	$	225,792
U.S. Government-sponsored enterprise securities	Within one year	49,618		(70)		49,548
Total short-term marketable securities		$	275,754	$	(414)	$	275,340
Long-term marketable securities
U.S. Government-sponsored enterprise securities	Within two years	64,596		(200)		64,396
Total long-term marketable securities		$	64,596	$	(200)	$	64,396