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Commitments and Contingencies - Future Minimum Lease Payments Under Noncancellable Operating Leases (Detail)
$ in Thousands
Jun. 30, 2017
USD ($)
Commitments and Contingencies Disclosure [Abstract]  
Remainder of 2017 $ 579
2018 967
2019 810
2020 566
2021 583
Thereafter $ 600