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Commitments and Contingencies - Schedule of Potential Milestone Amounts and Accruals (Detail) $ in Thousands | Sep. 30, 2021 USD ($)
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Commitments And Contingencies Disclosure [Abstract] |  |
Potential Fixed Monetary Amount Settlement in Cash | $ 10,799 |
Potential Fixed Monetary Amount Settlement in Stock | 121,128 | [1]
Potential Fixed Monetary Amount Settlement in Cash or stock at our sole discretion | 108,928 |
Total Potential Fixed Monetary Settlement Amount | 240,855 |
Accrued Amount Settlement in Cash | 985 | [2]
Accrued Amount Settlement in Stock | 11,973 | [1],[2]
Accrued Amount Settlement in Cash or stock at our sole discretion | 3,949 | [2]
Total Accrued Settlement Amount | $ 16,907 | [2]
[1] | Includes the performance-based milestone awards that were granted as part of the Exchange Program further discussed in Note 15.
[2] | Amount recorded for performance-based milestone awards that are probable of achievement.

X
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