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Investments - Summary of Financial Assets Recorded at Fair Value On Recurring Basis (Details) - Fair Value, Recurring - USD ($) $ in Thousands | Sep. 30, 2022 | Dec. 31, 2021
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Fair value measurements |  |
Total financial assets | $ 275,107 | $ 602,617
U.S. Treasury Instruments |  |
Fair value measurements |  |
Cash and cash equivalents | 22,924 | 301,992
Investments in securities | 192,699 | 200,973
Warrants |  |
Fair value measurements |  |
Investments in securities | 313 | 684
Money Market Securities |  |
Fair value measurements |  |
Cash and cash equivalents | 52,937 | 83,004
Common Stock |  |
Fair value measurements |  |
Investments in securities | 6,234 | 15,964
Level 1 |  |
Fair value measurements |  |
Total financial assets | 6,547 | 16,648
Level 1 | Warrants |  |
Fair value measurements |  |
Investments in securities | 313 | 684
Level 1 | Common Stock |  |
Fair value measurements |  |
Investments in securities | 6,234 | 15,964
Level 2 |  |
Fair value measurements |  |
Total financial assets | 268,560 | 585,969
Level 2 | U.S. Treasury Instruments |  |
Fair value measurements |  |
Cash and cash equivalents | 22,924 | 301,992
Investments in securities | 192,699 | 200,973
Level 2 | Money Market Securities |  |
Fair value measurements |  |
Cash and cash equivalents | $ 52,937 | $ 83,004

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- Definition Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References No definition available. + Details
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