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Commitments and Contingencies - Future Minimum Lease Payments under Noncancelable Operating Leases (Detail)
$ in Thousands
Dec. 31, 2015
USD ($)
Commitments and Contingencies Disclosure [Abstract]  
2016 $ 3,282
2017 3,776
2018 3,884
2019 3,993
2020 4,106
Thereafter 22,453
Total $ 41,494