Cash and Investments in Marketable Securities (Tables)

6 Months Ended

Jun. 30, 2022

Fair Value Disclosures [Abstract]

Schedule of Cash and Investments in Marketable Securities, Including Cash Equivalents

Cash and investments in marketable securities, including cash equivalents, are as follows (in thousands):

	Estimated Fair Value at
	June 30, 2022		December 31, 2021
Cash and cash equivalents	$	77,545	$	25,218
Short-term investments	541,771		708,737
Long-term investments	8,928		64,828
Total cash and investments in marketable securities	$	628,244	$	798,783

Schedule of Portfolio of Cash and Investments in Marketable Securities

Our portfolio of cash and investments in marketable securities includes (in thousands):

	Fair Value Hierarchy Level	June 30, 2022								December 31, 2021
		Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value		Fair Value
Corporate notes and bonds	2	$	141,416	$	—	$	(1,505)	$	139,911	$	278,121
Corporate commercial paper	2	415,106		—		(2,232)		412,874		478,629
Obligations of U.S. government agencies	2	4,880		—		(5)		4,875		5,875
Available-for-sale investments		$	561,402	$	—	$	(3,742)	$	557,660	$	762,625
Money market funds	1							42,342		23,968
Certificates of deposit	2							9,516		10,940
Cash	N/A							18,726		1,250
Total cash and investments in marketable securities								$	628,244	$	798,783