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Summary of Principal Contractual Obligations, Excluding Operating Leases (Detail)
$ in Thousands
Sep. 30, 2019
USD ($)
Purchase Commitments  
2019 (remaining three months) $ 12,096
2020 1,671
Total 13,767
Other Contractual Commitments  
2019 (remaining three months) 153
2020 113
Total 266
Total Commitments  
2019 (remaining three months) 12,249
2020 1,784
Total $ 14,033