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Lease Agreements - Future Contractual Payments Under Noncancelable Leases (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Leases [Abstract]  
2014 $ 149,101
2015 131,724
2016 114,123
2017 95,157
2018 77,542
Thereafter 306,980
Total future contractual payments $ 874,627