Annual report pursuant to Section 13 and 15(d)

Changes in Accumulated Other Comprehensive Loss, Net of Taxes, Related to Interest Rate Swap Agreements (Detail)

v2.4.1.9
Changes in Accumulated Other Comprehensive Loss, Net of Taxes, Related to Interest Rate Swap Agreements (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Other comprehensive loss before reclassifications, net of taxes $ 2,846us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax $ 3,151us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax $ 1,020us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax
Interest Rate Swap      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Beginning balances (5,716)us-gaap_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax
/ us-gaap_FinancialInstrumentAxis
= us-gaap_InterestRateSwapMember
(8,867)us-gaap_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax
/ us-gaap_FinancialInstrumentAxis
= us-gaap_InterestRateSwapMember
(12,357)us-gaap_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax
/ us-gaap_FinancialInstrumentAxis
= us-gaap_InterestRateSwapMember
Other comprehensive loss before reclassifications, net of taxes (3,169)us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax
/ us-gaap_FinancialInstrumentAxis
= us-gaap_InterestRateSwapMember
(2,668)us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax
/ us-gaap_FinancialInstrumentAxis
= us-gaap_InterestRateSwapMember
(11,959)us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax
/ us-gaap_FinancialInstrumentAxis
= us-gaap_InterestRateSwapMember
Amounts reclassified from accumulated other comprehensive loss to interest expense, net of taxes 6,015us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax
/ us-gaap_FinancialInstrumentAxis
= us-gaap_InterestRateSwapMember
5,819us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax
/ us-gaap_FinancialInstrumentAxis
= us-gaap_InterestRateSwapMember
15,449us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax
/ us-gaap_FinancialInstrumentAxis
= us-gaap_InterestRateSwapMember
Net other comprehensive income 2,846us-gaap_OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax
/ us-gaap_FinancialInstrumentAxis
= us-gaap_InterestRateSwapMember
3,151us-gaap_OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax
/ us-gaap_FinancialInstrumentAxis
= us-gaap_InterestRateSwapMember
3,490us-gaap_OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax
/ us-gaap_FinancialInstrumentAxis
= us-gaap_InterestRateSwapMember
Ending balances $ (2,870)us-gaap_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax
/ us-gaap_FinancialInstrumentAxis
= us-gaap_InterestRateSwapMember
$ (5,716)us-gaap_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax
/ us-gaap_FinancialInstrumentAxis
= us-gaap_InterestRateSwapMember
$ (8,867)us-gaap_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax
/ us-gaap_FinancialInstrumentAxis
= us-gaap_InterestRateSwapMember