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Financial Instruments - Cash, Cash Equivalents and Marketable Securities (Details) - USD ($) $ in Thousands | Sep. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Amortized Cost |  |
Cash, cash equivalents and marketable securities | $ 1,145,278 | $ 1,297,157
Gross Unrealized Gains |  |
Cash, cash equivalents and marketable securities | 0 | 9
Gross Unrealized Losses |  |
Cash, cash equivalents and marketable securities | (4,257) | (504)
Fair Value |  |
Cash and cash equivalents | 1,044,523 | 1,099,370
Marketable securities | 96,498 | 198,850
Cash, cash equivalents and marketable securities | 1,141,021 | 1,296,662
Cash |  |
Amortized Cost |  |
Cash and cash equivalents | 709,497 | 754,802
Fair Value |  |
Cash and cash equivalents | 709,497 | 754,802
Cash and Cash Equivalents |  |
Fair Value |  |
Cash, cash equivalents and marketable securities | 1,044,523 | 1,099,370
Cash and Cash Equivalents | Cash |  |
Fair Value |  |
Cash and cash equivalents | 709,497 | 754,802
Marketable securities, short-term |  |
Fair Value |  |
Cash, cash equivalents and marketable securities | 46,242 | 71,972
Marketable securities, long-term |  |
Fair Value |  |
Cash, cash equivalents and marketable securities | 50,256 | 125,320
Money market funds |  |
Amortized Cost |  |
Cash and cash equivalents | 335,026 | 343,012
Gross Unrealized Losses |  |
Cash and cash equivalents |  | (2)
Fair Value |  |
Cash and cash equivalents | 335,026 | 343,010
Money market funds | Cash and Cash Equivalents |  |
Fair Value |  |
Cash and cash equivalents | 335,026 | 343,010
Corporate bonds |  |
Amortized Cost |  |
Marketable securities | 70,560 | 115,507
Gross Unrealized Gains |  |
Marketable securities | 0 | 9
Gross Unrealized Losses |  |
Marketable securities | (3,405) | (398)
Fair Value |  |
Marketable securities | 67,155 | 115,118
Corporate bonds | Cash and Cash Equivalents |  |
Fair Value |  |
Marketable securities |  | 1,042
Corporate bonds | Marketable securities, short-term |  |
Fair Value |  |
Marketable securities | 29,454 | 35,065
Corporate bonds | Marketable securities, long-term |  |
Fair Value |  |
Marketable securities | 37,701 | 79,011
U.S. government treasury bonds |  |
Amortized Cost |  |
Marketable securities | 18,587 | 42,976
Gross Unrealized Gains |  |
Marketable securities | 0 | 0
Gross Unrealized Losses |  |
Marketable securities | (641) | (48)
Fair Value |  |
Marketable securities | 17,946 | 42,928
U.S. government treasury bonds | Marketable securities, short-term |  |
Fair Value |  |
Marketable securities | 9,078 | 22,251
U.S. government treasury bonds | Marketable securities, long-term |  |
Fair Value |  |
Marketable securities | 8,868 | 20,677
Asset-backed securities |  |
Amortized Cost |  |
Marketable securities | 5,624 | 32,031
Gross Unrealized Gains |  |
Marketable securities | 0 | 0
Gross Unrealized Losses |  |
Marketable securities | (53) | (40)
Fair Value |  |
Marketable securities | 5,571 | 31,991
Asset-backed securities | Marketable securities, short-term |  |
Fair Value |  |
Marketable securities | 3,695 | 10,999
Asset-backed securities | Marketable securities, long-term |  |
Fair Value |  |
Marketable securities | 1,876 | 20,992
Municipal bonds |  |
Amortized Cost |  |
Marketable securities | 4,780 | 7,628
Gross Unrealized Gains |  |
Marketable securities | 0 | 0
Gross Unrealized Losses |  |
Marketable securities | (93) | (15)
Fair Value |  |
Marketable securities | 4,687 | 7,613
Municipal bonds | Cash and Cash Equivalents |  |
Fair Value |  |
Marketable securities |  | 516
Municipal bonds | Marketable securities, short-term |  |
Fair Value |  |
Marketable securities | 4,015 | 3,657
Municipal bonds | Marketable securities, long-term |  |
Fair Value |  |
Marketable securities | 672 | 3,440
U.S. government agency bonds |  |
Amortized Cost |  |
Marketable securities | 1,204 | 1,201
Gross Unrealized Gains |  |
Marketable securities | 0 | 0
Gross Unrealized Losses |  |
Marketable securities | (65) | (1)
Fair Value |  |
Marketable securities | 1,139 | 1,200
U.S. government agency bonds | Marketable securities, long-term |  |
Fair Value |  |
Marketable securities | $ 1,139 | $ 1,200

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