Annual report pursuant to Section 13 and 15(d)

Commitments and Contingencies - Operating Lease Obligations for Rentals (Detail)

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Commitments and Contingencies - Operating Lease Obligations for Rentals (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Other Lease Obligations for rentals  
Gross Obligation, 2015 $ 90,935us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent
Gross Obligation, 2016 36,607us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears
Gross Obligation, 2017 441us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears
Gross Obligation, 2018 408us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears
Gross Obligation, 2019 407us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears
Gross Obligation, Thereafter 340us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter
Gross Obligation, Total 129,138us-gaap_OperatingLeasesFutureMinimumPaymentsDue
Company Share  
Other Lease Obligations for rentals  
Gross Obligation, 2015 36,812us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent
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Gross Obligation, 2016 10,594us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears
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Gross Obligation, 2017 441us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears
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Gross Obligation, 2018 408us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears
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Gross Obligation, 2019 407us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears
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Gross Obligation, Thereafter 340us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter
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Gross Obligation, Total $ 49,002us-gaap_OperatingLeasesFutureMinimumPaymentsDue
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