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Commitments and Contingencies - Summary of Approximate Future Minimum Lease Payments Required Under Operating Leases (Detail)
$ in Thousands
Dec. 31, 2015
USD ($)
Commitments and Contingencies Disclosure [Abstract]  
2016 $ 7,447
2017 5,057
2018 4,071
2019 1,658
2020 1,363
Thereafter 1,369
Operating leases future payments due $ 20,965