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Commitments and contingencies - Schedule of Non-cancelable Contractual Obligations (Detail)
$ in Thousands
Dec. 31, 2019
USD ($)
Commitments and Contingencies Disclosure [Abstract]  
2020 $ 129,950
2021 22,597
2022 24,310
2023 25,040
2024 46,050
Purchase Obligation, Due after Fifth Year 0
Total purchase commitments $ 247,947