XML 89 R58.htm IDEA: XBRL DOCUMENT v2.4.1.9
Employee Benefits (Detail Textuals) (USD $)
 12 Months Ended
Jan. 03, 2015
Jan. 04, 2014
Dec. 29, 2012
Compensation and Retirement Disclosure [Abstract]      
Net unfunded status of benefit plan $ 41,763,000bxc_DefinedBenefitPlanUnfundedStatusOfPlan $ 27,885,000bxc_DefinedBenefitPlanUnfundedStatusOfPlan  
Net adjustment to other comprehensive income (loss) net of tax (17,700,000)us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax 13,900,000us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax (8,200,000)us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax
Net adjustment to other comprehensive income (loss) before tax   22,800,000us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax  
Net adjustment to other comprehensive income (loss), tax (expense) benefit   (8,900,000)us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax  
Decrease in the unfunded obligation 13,900,000bxc_IncreaseDecreaseInDefinedBenefitPlanUnfundedObligations    
Actuarial (gain) loss 15,797,000us-gaap_DefinedBenefitPlanActuarialGainLoss (10,710,000)us-gaap_DefinedBenefitPlanActuarialGainLoss  
Actual return on plan assets 3,422,000us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets 13,536,000us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets  
Employer contributions 4,676,000us-gaap_DefinedBenefitPlanContributionsByEmployer 472,000us-gaap_DefinedBenefitPlanContributionsByEmployer  
Charge due to to current year service and interest cost 6,200,000bxc_DefinedBenefitPlanBenefitObligationIncreaseInLiability    
Discount rate 4.19%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate 5.00%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate  
Net periodic pension costs 900,000bxc_IncreaseDecreaseInNetPeriodicPensionCost 4,600,000bxc_IncreaseDecreaseInNetPeriodicPensionCost  
Discount rate on net periodic pension cost 5.00%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate 4.24%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate  
Recognized net gain (loss) due to curtailments   900,000us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments  
Estimated net loss expected to be amortized from accumulated other comprehensive loss into net periodic cost over the next fiscal year 1,000,000us-gaap_DefinedBenefitPlanAmountToBeAmortizedFromAccumulatedOtherComprehensiveIncomeLossNextFiscalYear    
Accumulated benefit obligation for the hourly pension plan $ 120,500,000us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation $ 103,700,000us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation