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Financial Instruments - Cash, Cash Equivalents and Marketable Securities (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Amortized Cost |  |
Cash, cash equivalents and marketable securities | $ 1,045,191 | $ 1,297,157
Gross Unrealized Gains |  |
Cash, cash equivalents and marketable securities | 2 | 9
Gross Unrealized Losses |  |
Cash, cash equivalents and marketable securities | (3,631) | (504)
Fair Value |  |
Cash and cash equivalents | 942,050 | 1,099,370
Marketable securities, fair value | 99,512 | 198,850
Cash, cash equivalents and marketable securities | 1,041,562 | 1,296,662
Cash |  |
Amortized Cost |  |
Cash and cash equivalents | 712,921 | 754,802
Fair Value |  |
Cash and cash equivalents | 712,921 | 754,802
Cash and Cash Equivalents |  |
Fair Value |  |
Cash, cash equivalents and marketable securities | 942,050 | 1,099,370
Cash and Cash Equivalents | Cash |  |
Fair Value |  |
Cash and cash equivalents | 712,921 | 754,802
Marketable securities, short-term |  |
Fair Value |  |
Cash, cash equivalents and marketable securities | 57,534 | 71,972
Marketable securities, long-term |  |
Fair Value |  |
Cash, cash equivalents and marketable securities | 41,978 | 125,320
Money market funds |  |
Amortized Cost |  |
Cash and cash equivalents | 229,129 | 343,012
Gross Unrealized Losses |  |
Cash and cash equivalents |  | (2)
Fair Value |  |
Cash and cash equivalents | 229,129 | 343,010
Money market funds | Cash and Cash Equivalents |  |
Fair Value |  |
Cash and cash equivalents | 229,129 | 343,010
Corporate bonds |  |
Amortized Cost |  |
Marketable securities, amortized cost | 69,390 | 115,507
Gross Unrealized Gains |  |
Marketable securities | 0 | 9
Gross Unrealized Losses |  |
Marketable securities | (2,915) | (398)
Fair Value |  |
Marketable securities, fair value | 66,475 | 115,118
Corporate bonds | Cash and Cash Equivalents |  |
Fair Value |  |
Marketable securities, fair value |  | 1,042
Corporate bonds | Marketable securities, short-term |  |
Fair Value |  |
Marketable securities, fair value | 36,510 | 35,065
Corporate bonds | Marketable securities, long-term |  |
Fair Value |  |
Marketable securities, fair value | 29,965 | 79,011
U.S. government treasury bonds |  |
Amortized Cost |  |
Marketable securities, amortized cost | 20,559 | 42,976
Gross Unrealized Gains |  |
Marketable securities | 0 | 0
Gross Unrealized Losses |  |
Marketable securities | (549) | (48)
Fair Value |  |
Marketable securities, fair value | 20,010 | 42,928
U.S. government treasury bonds | Marketable securities, short-term |  |
Fair Value |  |
Marketable securities, fair value | 15,404 | 22,251
U.S. government treasury bonds | Marketable securities, long-term |  |
Fair Value |  |
Marketable securities, fair value | 4,606 | 20,677
Asset-backed securities |  |
Amortized Cost |  |
Marketable securities, amortized cost | 4,514 | 32,031
Gross Unrealized Gains |  |
Marketable securities | 1 | 0
Gross Unrealized Losses |  |
Marketable securities | (37) | (40)
Fair Value |  |
Marketable securities, fair value | 4,478 | 31,991
Asset-backed securities | Marketable securities, short-term |  |
Fair Value |  |
Marketable securities, fair value | 2,909 | 10,999
Asset-backed securities | Marketable securities, long-term |  |
Fair Value |  |
Marketable securities, fair value | 1,569 | 20,992
Municipal bonds |  |
Amortized Cost |  |
Marketable securities, amortized cost | 3,447 | 7,628
Gross Unrealized Gains |  |
Marketable securities | 0 | 0
Gross Unrealized Losses |  |
Marketable securities | (61) | (15)
Fair Value |  |
Marketable securities, fair value | 3,386 | 7,613
Municipal bonds | Cash and Cash Equivalents |  |
Fair Value |  |
Marketable securities, fair value |  | 516
Municipal bonds | Marketable securities, short-term |  |
Fair Value |  |
Marketable securities, fair value | 2,711 | 3,657
Municipal bonds | Marketable securities, long-term |  |
Fair Value |  |
Marketable securities, fair value | 675 | 3,440
U.S. government agency bonds |  |
Amortized Cost |  |
Marketable securities, amortized cost | 5,231 | 1,201
Gross Unrealized Gains |  |
Marketable securities | 1 | 0
Gross Unrealized Losses |  |
Marketable securities | (69) | (1)
Fair Value |  |
Marketable securities, fair value | 5,163 | 1,200
U.S. government agency bonds | Marketable securities, long-term |  |
Fair Value |  |
Marketable securities, fair value | $ 5,163 | $ 1,200

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