Financial Instruments - Cash, Cash Equivalents and Marketable Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Amortized Cost
Cash, cash equivalents and marketable securities	$ 980,714	$ 1,297,157
Gross Unrealized Gains
Cash, cash equivalents and marketable securities	0	9
Gross Unrealized Losses
Cash, cash equivalents and marketable securities	(3,524)	(504)
Fair Value
Cash and cash equivalents	877,501	1,099,370
Marketable securities	99,689	198,850
Cash, cash equivalents and marketable securities	977,190	1,296,662
Cash
Amortized Cost
Cash and cash equivalents	758,365	754,802
Fair Value
Cash and cash equivalents	758,365	754,802
Cash and Cash Equivalents
Fair Value
Cash, cash equivalents and marketable securities	877,501	1,099,370
Cash and Cash Equivalents \| Cash
Fair Value
Cash and cash equivalents	758,365	754,802
Marketable securities, short-term
Fair Value
Cash, cash equivalents and marketable securities	22,138	71,972
Marketable securities, long-term
Fair Value
Cash, cash equivalents and marketable securities	77,551	125,320
Money market funds
Amortized Cost
Cash and cash equivalents	119,148	343,012
Gross Unrealized Losses
Cash and cash equivalents	(12)	(2)
Fair Value
Cash and cash equivalents	119,136	343,010
Money market funds \| Cash and Cash Equivalents
Fair Value
Cash and cash equivalents	119,136	343,010
Corporate bonds
Amortized Cost
Marketable securities	70,808	115,507
Gross Unrealized Gains
Marketable securities	0	9
Gross Unrealized Losses
Marketable securities	(2,812)	(398)
Fair Value
Marketable securities	67,996	115,118
Corporate bonds \| Cash and Cash Equivalents
Fair Value
Marketable securities		1,042
Corporate bonds \| Marketable securities, short-term
Fair Value
Marketable securities	8,488	35,065
Corporate bonds \| Marketable securities, long-term
Fair Value
Marketable securities	59,508	79,011
U.S. government treasury bonds
Amortized Cost
Marketable securities	18,609	42,976
Gross Unrealized Gains
Marketable securities	0	0
Gross Unrealized Losses
Marketable securities	(495)	(48)
Fair Value
Marketable securities	18,114	42,928
U.S. government treasury bonds \| Marketable securities, short-term
Fair Value
Marketable securities	6,490	22,251
U.S. government treasury bonds \| Marketable securities, long-term
Fair Value
Marketable securities	11,624	20,677
Asset-backed securities
Amortized Cost
Marketable securities	7,042	32,031
Gross Unrealized Gains
Marketable securities	0	0
Gross Unrealized Losses
Marketable securities	(59)	(40)
Fair Value
Marketable securities	6,983	31,991
Asset-backed securities \| Marketable securities, short-term
Fair Value
Marketable securities	3,113	10,999
Asset-backed securities \| Marketable securities, long-term
Fair Value
Marketable securities	3,870	20,992
Municipal bonds
Amortized Cost
Marketable securities	5,541	7,628
Gross Unrealized Gains
Marketable securities	0	0
Gross Unrealized Losses
Marketable securities	(100)	(15)
Fair Value
Marketable securities	5,441	7,613
Municipal bonds \| Cash and Cash Equivalents
Fair Value
Marketable securities		516
Municipal bonds \| Marketable securities, short-term
Fair Value
Marketable securities	4,047	3,657
Municipal bonds \| Marketable securities, long-term
Fair Value
Marketable securities	1,394	3,440
U.S. government agency bonds
Amortized Cost
Marketable securities	1,201	1,201
Gross Unrealized Gains
Marketable securities	0	0
Gross Unrealized Losses
Marketable securities	(46)	(1)
Fair Value
Marketable securities	1,155	1,200
U.S. government agency bonds \| Marketable securities, long-term
Fair Value
Marketable securities	$ 1,155	$ 1,200

Cash And Cash Equivalents, Accumulated Gross Unrealized Loss, Before Tax

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Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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