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Fair Value Measurements - Assets and Liabilities Measured on a Recurring Basis (Details) - USD ($) | Dec. 31, 2021 | Aug. 20, 2021 | Dec. 31, 2020
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Short-Term Investments | $ 94,696,000 |  | $ 0
Long-Term Investments | 54,816,000 |  | 0
Warrants liabilitites |  | $ 17,900,000 | 1,700,000
Earn-out shares liability |  | $ 101,700,000 |
Embedded derivative liability on convertible notes | 0 |  | 6,400,000
Common Stock Private Warrants |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Warrants liabilitites | 140,225 |  |
Common Stock Public Warrants |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Warrants liabilitites | 7,400,000 |  |
Non-U.S. government and supranational bonds |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Short-Term Investments | 16,387,000 |  |
Long-Term Investments | 3,753,000 |  |
Corporate debt security |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Short-Term Investments | 71,349,000 |  |
Long-Term Investments | 42,457,000 |  |
U.S. treasuries |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Short-Term Investments | 3,408,000 |  |
Long-Term Investments | 2,196,000 |  |
Asset-backed security and other |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Short-Term Investments | 2,551,000 |  |
Long-Term Investments | 5,410,000 |  |
Certificate of deposit |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Short-Term Investments | 1,001,000 |  |
Long-Term Investments | 1,000,000 |  |
Fair Value, Recurring |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Cash and Cash Equivalents | 8,320,000 |  |
Short-Term Investments | 94,696,000 |  |
Long-Term Investments | 54,816,000 |  |
Warrants liabilitites |  |  | 1,707,000
Earn-out shares liability | 29,240,000 |  |
Embedded derivative liability on convertible notes |  |  | 6,394,000
Total Financial Liabilities | 36,736,000 |  | 8,101,000
Fair Value, Recurring | Common Stock Private Warrants |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Warrants liabilitites | 140,000 |  |
Fair Value, Recurring | Common Stock Public Warrants |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Warrants liabilitites | 7,356,000 |  |
Fair Value, Recurring | Money market funds |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Cash and Cash Equivalents | 5,868,000 |  |
Fair Value, Recurring | Non-U.S. government and supranational bonds |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Cash and Cash Equivalents | 647,000 |  |
Short-Term Investments | 16,387,000 |  |
Long-Term Investments | 3,753,000 |  |
Fair Value, Recurring | Corporate debt security |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Cash and Cash Equivalents | 1,805,000 |  |
Short-Term Investments | 71,349,000 |  |
Long-Term Investments | 42,457,000 |  |
Fair Value, Recurring | U.S. treasuries |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Short-Term Investments | 3,408,000 |  |
Long-Term Investments | 2,196,000 |  |
Fair Value, Recurring | Asset-backed security and other |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Short-Term Investments | 2,551,000 |  |
Long-Term Investments | 5,410,000 |  |
Fair Value, Recurring | Certificate of deposit |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Short-Term Investments | 1,001,000 |  |
Long-Term Investments | 1,000,000 |  |
Fair Value, Recurring | Level 1 |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Cash and Cash Equivalents | 5,868,000 |  |
Short-Term Investments | 3,408,000 |  |
Long-Term Investments | 2,196,000 |  |
Warrants liabilitites |  |  | 0
Earn-out shares liability | 0 |  |
Embedded derivative liability on convertible notes |  |  | 0
Total Financial Liabilities | 7,356,000 |  | 0
Fair Value, Recurring | Level 1 | Common Stock Private Warrants |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Warrants liabilitites | 0 |  |
Fair Value, Recurring | Level 1 | Common Stock Public Warrants |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Warrants liabilitites | 7,356,000 |  |
Fair Value, Recurring | Level 1 | Money market funds |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Cash and Cash Equivalents | 5,868,000 |  |
Fair Value, Recurring | Level 1 | Non-U.S. government and supranational bonds |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Cash and Cash Equivalents | 0 |  |
Short-Term Investments | 0 |  |
Long-Term Investments | 0 |  |
Fair Value, Recurring | Level 1 | Corporate debt security |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Cash and Cash Equivalents | 0 |  |
Short-Term Investments | 0 |  |
Long-Term Investments | 0 |  |
Fair Value, Recurring | Level 1 | U.S. treasuries |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Short-Term Investments | 3,408,000 |  |
Long-Term Investments | 2,196,000 |  |
Fair Value, Recurring | Level 1 | Asset-backed security and other |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Short-Term Investments | 0 |  |
Long-Term Investments | 0 |  |
Fair Value, Recurring | Level 1 | Certificate of deposit |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Short-Term Investments | 0 |  |
Long-Term Investments | 0 |  |
Fair Value, Recurring | Level 2 |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Cash and Cash Equivalents | 2,452,000 |  |
Short-Term Investments | 91,288,000 |  |
Long-Term Investments | 52,620,000 |  |
Warrants liabilitites |  |  | 0
Earn-out shares liability | 0 |  |
Embedded derivative liability on convertible notes |  |  | 0
Total Financial Liabilities | 140,000 |  | 0
Fair Value, Recurring | Level 2 | Common Stock Private Warrants |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Warrants liabilitites | 140,000 |  |
Fair Value, Recurring | Level 2 | Common Stock Public Warrants |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Warrants liabilitites | 0 |  |
Fair Value, Recurring | Level 2 | Money market funds |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Cash and Cash Equivalents | 0 |  |
Fair Value, Recurring | Level 2 | Non-U.S. government and supranational bonds |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Cash and Cash Equivalents | 647,000 |  |
Short-Term Investments | 16,387,000 |  |
Long-Term Investments | 3,753,000 |  |
Fair Value, Recurring | Level 2 | Corporate debt security |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Cash and Cash Equivalents | 1,805,000 |  |
Short-Term Investments | 71,349,000 |  |
Long-Term Investments | 42,457,000 |  |
Fair Value, Recurring | Level 2 | U.S. treasuries |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Short-Term Investments | 0 |  |
Long-Term Investments | 0 |  |
Fair Value, Recurring | Level 2 | Asset-backed security and other |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Short-Term Investments | 2,551,000 |  |
Long-Term Investments | 5,410,000 |  |
Fair Value, Recurring | Level 2 | Certificate of deposit |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Short-Term Investments | 1,001,000 |  |
Long-Term Investments | 1,000,000 |  |
Fair Value, Recurring | Level 3 |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Cash and Cash Equivalents | 0 |  |
Short-Term Investments | 0 |  |
Long-Term Investments | 0 |  |
Warrants liabilitites |  |  | 1,707,000
Earn-out shares liability | 29,240,000 |  |
Embedded derivative liability on convertible notes |  |  | 6,394,000
Total Financial Liabilities | 29,240,000 |  | $ 8,101,000
Fair Value, Recurring | Level 3 | Common Stock Private Warrants |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Warrants liabilitites | 0 |  |
Fair Value, Recurring | Level 3 | Common Stock Public Warrants |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Warrants liabilitites | 0 |  |
Fair Value, Recurring | Level 3 | Money market funds |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Cash and Cash Equivalents | 0 |  |
Fair Value, Recurring | Level 3 | Non-U.S. government and supranational bonds |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Cash and Cash Equivalents | 0 |  |
Short-Term Investments | 0 |  |
Long-Term Investments | 0 |  |
Fair Value, Recurring | Level 3 | Corporate debt security |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Cash and Cash Equivalents | 0 |  |
Short-Term Investments | 0 |  |
Long-Term Investments | 0 |  |
Fair Value, Recurring | Level 3 | U.S. treasuries |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Short-Term Investments | 0 |  |
Long-Term Investments | 0 |  |
Fair Value, Recurring | Level 3 | Asset-backed security and other |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Short-Term Investments | 0 |  |
Long-Term Investments | 0 |  |
Fair Value, Recurring | Level 3 | Certificate of deposit |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Short-Term Investments | 0 |  |
Long-Term Investments | $ 0 |  |

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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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