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Estimated Amortization Expense on Intangible Assets (Detail) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2014
Estimated amortization expense  
Remainder of 2014 $ 4,229
2015 16,939
2016 16,922
2017 16,726
2018 16,225
Thereafter 29,746
Net $ 100,787