Cash and Investments in Marketable Securities (Tables)

12 Months Ended

Dec. 31, 2022

Cash and Cash Equivalents [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
	December 31, 2022		December 31, 2021
Cash and cash equivalents	$	88,227	$	25,218
Short-term investments	416,750		708,737
Long-term investments	—		64,828
Total cash and investments in marketable securities	$	504,977	$	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	December 31, 2022								December 31, 2021
		Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value		Fair Value
Corporate notes and bonds	2	$	84,377	$	—	$	(855)	$	83,522	$	278,121
Corporate commercial paper	2	345,125		25		(946)		344,204		478,629
Obligations of U.S. government agencies	2	—		—		—		—		5,875
Available-for-sale investments		429,502		25		(1,801)		427,726		762,625
Money market funds	1							47,054		23,968
Certificates of deposit	2							21,399		10,940
Cash	N/A							8,798		1,250
Total cash and investments in marketable securities								$	504,977	$	798,783