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Fair Value Measurements - Assets and Liabilities Measured at Fair Value (Detail) - USD ($) $ in Thousands | Sep. 30, 2023 | Dec. 31, 2022
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Assets, fair value |  | $ 6,892 | $ 21,666
Liabilities, fair value |  | 4,664 | 5,000
Long-term receivable |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Assets, fair value |  | 4,664 |
Money Market Funds |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Assets, fair value | [1] | 2,228 | 21,666
CVR Derivative Liability |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Liabilities, fair value |  |  | 5,000
CVR Derivative Liability non current |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Liabilities, fair value |  | 4,664 |
Fair Value, Inputs, Level 1 |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Assets, fair value |  | 2,228 | 21,666
Fair Value, Inputs, Level 1 | Money Market Funds |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Assets, fair value | [1] | 2,228 | 21,666
Fair Value, Inputs, Level 3 |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Assets, fair value |  | 4,664 |
Liabilities, fair value |  | 4,664 | 5,000
Fair Value, Inputs, Level 3 | Long-term receivable |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Assets, fair value |  | 4,664 |
Fair Value, Inputs, Level 3 | CVR Derivative Liability |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Liabilities, fair value |  |  | $ 5,000
Fair Value, Inputs, Level 3 | CVR Derivative Liability non current |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Liabilities, fair value |  | $ 4,664 |
[1] | Included in cash and cash equivalents on the accompanying condensed consolidated balance sheets.

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