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Commitments and Contingencies - Future Minimum Rental Payments Under Lease Agreements (Detail)
$ in Thousands
Dec. 31, 2015
USD ($)
Future minimum rental payments under lease agreements  
2016 $ 4,110
2017 2,739
2018 2,197
2019 1,571
2020 1,308
Thereafter 2,453
Total $ 14,378