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Future Minimum Annual Lease Payments under Capital and Operating Leases with Non-cancelable Terms in Excess of One Year (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Capital Leases, Lease Obligations  
2015 $ 3,915us-gaap_CapitalLeasesFutureMinimumPaymentsDueCurrent
2016 3,281us-gaap_CapitalLeasesFutureMinimumPaymentsDueInTwoYears
2017 2,903us-gaap_CapitalLeasesFutureMinimumPaymentsDueInThreeYears
2018 2,403us-gaap_CapitalLeasesFutureMinimumPaymentsDueInFourYears
2019 2,203us-gaap_CapitalLeasesFutureMinimumPaymentsDueInFiveYears
Thereafter 23,639us-gaap_CapitalLeasesFutureMinimumPaymentsDueThereafter
Total future minimum lease obligation 38,344us-gaap_CapitalLeasesFutureMinimumPaymentsDue
Operating Leases, Lease Obligations  
2015 9,576us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent
2016 5,098us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears
2017 3,326us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears
2018 1,945us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears
2019 1,173us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears
Thereafter 1,403us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter
Total future minimum lease obligation $ 22,521us-gaap_OperatingLeasesFutureMinimumPaymentsDue