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Commitments and Contingencies - Future Annual Minimum Lease Payments under Noncancelable Operating Leases (Detail)
$ in Thousands
Mar. 31, 2017
USD ($)
Commitments And Contingencies Disclosure [Abstract]  
2017 (remaining three months) $ 926
2018 3,641
2019 1,668
2020 379
2021 46
Total $ 6,660