Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements - Assets or Liabilities Recorded at Fair Value (Detail)

v2.4.1.9
Fair Value Measurements - Assets or Liabilities Recorded at Fair Value (Detail) (Significant Other Observable Inputs (Level 2) [Member], USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Significant Other Observable Inputs (Level 2) [Member]
   
Assets:    
Cash surrender value of life insurance policies $ 27,552us-gaap_CashSurrenderValueOfLifeInsurance
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
$ 25,301us-gaap_CashSurrenderValueOfLifeInsurance
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
Cash flow swaps designated as hedges 618us-gaap_InterestRateCashFlowHedgeAssetAtFairValue
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
3,707us-gaap_InterestRateCashFlowHedgeAssetAtFairValue
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
Total assets 28,170us-gaap_AssetsFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
29,008us-gaap_AssetsFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
Liabilities:    
Cash flow swaps designated as hedges 10,251us-gaap_InterestRateCashFlowHedgeLiabilityAtFairValue
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
17,995us-gaap_InterestRateCashFlowHedgeLiabilityAtFairValue
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
Cash flow swaps not designated as hedges 1,469us-gaap_InterestRateDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsLiabilityAtFairValue
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
2,046us-gaap_InterestRateDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsLiabilityAtFairValue
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
Deferred compensation plan 15,863us-gaap_DeferredCompensationLiabilityClassifiedNoncurrent
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
14,842us-gaap_DeferredCompensationLiabilityClassifiedNoncurrent
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
Total liabilities $ 27,583us-gaap_LiabilitiesFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
$ 34,883us-gaap_LiabilitiesFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member