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Financial Instruments - Cash, Cash Equivalents and Marketable Securities (Details) - USD ($) $ in Thousands | Jun. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Amortized Cost |  |
Cash, cash equivalents and marketable securities | $ 1,035,964 | $ 1,045,191
Gross Unrealized Gains |  |
Cash, cash equivalents and marketable securities | 0 | 2
Gross Unrealized Losses |  |
Cash, cash equivalents and marketable securities | (2,180) | (3,631)
Fair Value |  |
Cash and cash equivalents | 951,956 | 942,050
Marketable securities | 81,828 | 99,512
Cash, cash equivalents and marketable securities | 1,033,784 | 1,041,562
Cash |  |
Amortized Cost |  |
Cash and cash equivalents | 759,407 | 712,921
Fair Value |  |
Cash and cash equivalents | 759,407 | 712,921
Cash and Cash Equivalents |  |
Fair Value |  |
Cash, cash equivalents and marketable securities | 951,956 | 942,050
Cash and Cash Equivalents | Cash |  |
Fair Value |  |
Cash and cash equivalents | 759,407 | 712,921
Marketable securities, short-term |  |
Fair Value |  |
Cash, cash equivalents and marketable securities | 55,805 | 57,534
Marketable securities, long-term |  |
Fair Value |  |
Cash, cash equivalents and marketable securities | 26,023 | 41,978
Money market funds |  |
Amortized Cost |  |
Cash and cash equivalents | 192,549 | 229,129
Gross Unrealized Losses |  |
Cash and cash equivalents |  | 0
Fair Value |  |
Cash and cash equivalents | 192,549 | 229,129
Money market funds | Cash and Cash Equivalents |  |
Fair Value |  |
Cash and cash equivalents | 192,549 | 229,129
Corporate bonds |  |
Amortized Cost |  |
Marketable securities | 59,703 | 69,390
Gross Unrealized Gains |  |
Marketable securities | 0 | 0
Gross Unrealized Losses |  |
Marketable securities | (1,740) | (2,915)
Fair Value |  |
Marketable securities | 57,963 | 66,475
Corporate bonds | Cash and Cash Equivalents |  |
Fair Value |  |
Marketable securities |  | 0
Corporate bonds | Marketable securities, short-term |  |
Fair Value |  |
Marketable securities | 39,145 | 36,510
Corporate bonds | Marketable securities, long-term |  |
Fair Value |  |
Marketable securities | 18,818 | 29,965
U.S. government treasury bonds |  |
Amortized Cost |  |
Marketable securities | 14,054 | 20,559
Gross Unrealized Gains |  |
Marketable securities | 0 | 0
Gross Unrealized Losses |  |
Marketable securities | (325) | (549)
Fair Value |  |
Marketable securities | 13,729 | 20,010
U.S. government treasury bonds | Marketable securities, short-term |  |
Fair Value |  |
Marketable securities | 9,096 | 15,404
U.S. government treasury bonds | Marketable securities, long-term |  |
Fair Value |  |
Marketable securities | 4,633 | 4,606
Asset-backed securities |  |
Amortized Cost |  |
Marketable securities | 3,600 | 4,514
Gross Unrealized Gains |  |
Marketable securities | 0 | 1
Gross Unrealized Losses |  |
Marketable securities | (13) | (37)
Fair Value |  |
Marketable securities | 3,587 | 4,478
Asset-backed securities | Marketable securities, short-term |  |
Fair Value |  |
Marketable securities | 2,012 | 2,909
Asset-backed securities | Marketable securities, long-term |  |
Fair Value |  |
Marketable securities | 1,575 | 1,569
Municipal bonds |  |
Amortized Cost |  |
Marketable securities | 1,437 | 3,447
Gross Unrealized Gains |  |
Marketable securities | 0 | 0
Gross Unrealized Losses |  |
Marketable securities | (18) | (61)
Fair Value |  |
Marketable securities | 1,419 | 3,386
Municipal bonds | Cash and Cash Equivalents |  |
Fair Value |  |
Marketable securities |  | 0
Municipal bonds | Marketable securities, short-term |  |
Fair Value |  |
Marketable securities | 1,419 | 2,711
Municipal bonds | Marketable securities, long-term |  |
Fair Value |  |
Marketable securities | 0 | 675
U.S. government agency bonds |  |
Amortized Cost |  |
Marketable securities | 5,214 | 5,231
Gross Unrealized Gains |  |
Marketable securities | 0 | 1
Gross Unrealized Losses |  |
Marketable securities | (84) | (69)
Fair Value |  |
Marketable securities | 5,130 | 5,163
U.S. government agency bonds | Marketable securities, long-term |  |
Fair Value |  |
Marketable securities | $ 997 | $ 5,163

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