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Leases - Summary of Future Minimum Lease Payments (Detail)
$ in Thousands
Dec. 31, 2015
USD ($)
Leases [Abstract]  
2016 $ 45,133
2017 37,585
2018 30,838
2019 22,517
2020 12,585
2021 and after 18,360
Future minimum payments, total $ 167,018