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Lease Agreements - Future Contractual Payments Under Noncancelable Leases (Detail)
$ in Thousands
Dec. 31, 2015
USD ($)
Leases [Abstract]  
2016 $ 154,983
2017 140,786
2018 122,922
2019 100,845
2020 80,559
Thereafter 273,328
Total future contractual payments $ 873,423