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Commitments and Loss Contingencies - Schedule of Future Minimum Purchases Remaining under Agreements (Detail)
$ in Thousands
Dec. 31, 2020
USD ($)
Unrecorded Unconditional Purchase Obligation [Abstract]  
2021 $ 27,338
2022 8,350
2023 1,089
2024 0
2025 0
2026 and thereafter 0
Total minimum payments required $ 36,777