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Commitments and Contingencies - Future Minimum Lease Payments under Operating Leases (Detail)
$ in Thousands
Dec. 31, 2015
USD ($)
Commitments and Contingencies Disclosure [Abstract]  
2016 $ 5,683
2017 3,935
2018 3,432
2019 3,022
2020 3,065
Thereafter 1,804
Total minimum payments $ 20,941