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Employee Benefit Plans - Schedule of Expected Benefit Payments Under the Defined Benefit Plans (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Compensation and Retirement Disclosure [Abstract]  
2015 $ 4,810us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths
2016 4,541us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo
2017 5,188us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree
2018 5,884us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour
2019 6,175us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive
Years 2020 through 2024 36,360us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter
Total $ 62,958q_DefinedBenefitPlanExpectedFutureBenefitPayments