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Commitments and contingencies - Schedule of Non-cancelable Contractual Obligations (Detail)
$ in Thousands
Dec. 31, 2020
USD ($)
Commitments and Contingencies Disclosure [Abstract]  
2021 $ 83,885
2022 12,611
2023 0
2024 0
2025 0
2026 0
Total purchase commitments $ 96,496