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Commitments and Contingencies - Minimum Lease Payments Under Noncancellable Operating Leases (Detail)
$ in Thousands
Dec. 31, 2015
USD ($)
Commitments and Contingencies Disclosure [Abstract]  
2016 $ 96,308
2017 93,926
2018 79,995
2019 64,819
2020 46,589
Later years 110,533
Total $ 492,170