Fair Value Measurement - Summary of Opening Balances of Assets and Liabilities Categorized Within Level 3 of the Fair Value Hierarchy Measured at Fair Value on a Recurring Basis (Detail) $ in Thousands |
12 Months Ended |
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Dec. 31, 2020
USD ($)
| |
Fair Value Disclosures [Abstract] | |
Debt securities classified as available-for-sale, Beginning Balance | $ 4,320 |
Debt securities classified as available-for-sale, Interest expenses, net | 804 |
Debt securities classified as available-for-sale, Change in fair value | (2,624) |
Debt securities classified as available-for-sale, Ending Balance | 2,500 |
Warrant liability, Additions | (69,414) |
Warrant liability, Exercise | 49,053 |
Warrant liability, Change in fair value | (100,286) |
Warrant liability, Ending Balance | $ (120,647) |