$BXC
BlueLinx Holdings Inc. Stock $bxc

$bxc Overview Financials Valuation SEC Filings Company Website

2018 Form 10-K Financial Statement

#000130178719000013 Filed on March 13, 2019

Income Statement

Concept	2018	2017 Q4	2017
Revenue	$2.863B	$433.6M	$1.816B
YoY Change	57.69%	-8.92%	-5.27%
Cost Of Revenue	$2.531B	$378.1M	$1.585B
YoY Change	59.73%	-9.11%	-4.18%
Gross Profit	$331.9M	$55.50M	$231.0M
YoY Change	43.64%	-7.58%	1.59%
Gross Profit Margin	11.59%	12.8%	12.73%
Selling, General & Admin	$319.3M	$50.00M	$198.7M
YoY Change	60.69%	1.73%	-2.84%
% of Gross Profit	96.22%	90.09%	86.01%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$25.83M	$2.200M	$9.032M
YoY Change	185.94%	-0.9%	-3.32%
% of Gross Profit	7.78%	3.96%	3.91%
Operating Expenses	$345.1M	$52.10M	$201.0M
YoY Change	71.68%	39.19%	8.23%
Operating Profit	-$13.29M	$3.400M	$29.99M
YoY Change	-144.3%	-84.97%	-28.0%
Interest Expense	$47.30M	-$4.900M	$21.23M
YoY Change	122.86%	-180.26%	-14.75%
% of Operating Profit		-144.12%	70.78%
Other Income/Expense, Net	$380.0K	$800.0K	$822.0K
YoY Change	-53.77%	4605.88%	81.86%
Pretax Income	-$60.21M	-$800.0K	$9.585M
YoY Change	-728.14%	-104.84%	-44.29%
Income Tax	-$12.15M	-$83.60M	-$53.41M
% Of Pretax Income			-557.21%
Net Earnings	-$17.66M	$53.50M	$62.99M
YoY Change	-128.03%	256.48%	291.63%
Net Earnings / Revenue	-0.62%	12.34%	3.47%
Basic Earnings Per Share	-$5.21		$6.96
Diluted Earnings Per Share	-$5.21	$5.691M	$6.81
COMMON SHARES
Basic Shares Outstanding	9.230M shares	9.098M shares	9.045M shares
Diluted Shares Outstanding	9.230M shares		9.246M shares

Balance Sheet

Concept	2018	2017 Q4	2017
SHORT-TERM ASSETS
Cash & Short-Term Investments	$8.900M	$4.700M	$4.700M
YoY Change	89.36%	0.0%	-14.55%
Cash & Equivalents		$4.696M
Short-Term Investments
Other Short-Term Assets	$40.60M	$17.12M	$17.10M
YoY Change	137.43%	-25.95%	-25.97%
Inventory	$341.9M	$187.5M	$187.5M
Prepaid Expenses
Receivables	$208.4M	$134.1M	$134.1M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$599.9M	$343.4M	$343.4M
YoY Change	74.69%	-0.7%	-0.69%
LONG-TERM ASSETS
Property, Plant & Equipment	$205.1M	$83.77M	$83.80M
YoY Change	144.75%	-5.15%	-5.1%
Goodwill		$0.00
YoY Change
Intangibles		$0.00
YoY Change
Long-Term Investments
YoY Change
Other Assets	$71.90M	$13.07M	$66.90M
YoY Change	7.47%	30.59%	569.0%
Total Long-Term Assets	$360.0M	$150.7M	$150.7M
YoY Change	138.89%	53.25%	53.31%
TOTAL ASSETS
Total Short-Term Assets	$599.9M	$343.4M	$343.4M
Total Long-Term Assets	$360.0M	$150.7M	$150.7M
Total Assets	$959.9M	$494.1M	$494.1M
YoY Change	94.27%	11.25%	11.26%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$131.8M	$70.62M	$70.60M
YoY Change	86.69%	-14.64%	-14.63%
Accrued Expenses	$31.70M	$9.200M	$9.200M
YoY Change	244.57%	21.05%	10.84%
Deferred Revenue
YoY Change
Short-Term Debt	$17.40M	$21.60M	$21.60M
YoY Change	-19.44%	38.46%	-0.46%
Long-Term Debt Due	$9.300M	$0.00	$0.00
YoY Change		-100.0%	-100.0%
Total Short-Term Liabilities	$196.8M	$117.6M	$117.6M
YoY Change	67.35%	-23.8%	-23.78%
LONG-TERM LIABILITIES
Long-Term Debt	$641.4M	$276.7M	$276.7M
YoY Change	131.8%	2.17%	2.18%
Other Long-Term Liabilities	$136.4M	$9.959M	$64.80M
YoY Change	110.49%	-31.3%	32.79%
Total Long-Term Liabilities	$777.8M	$286.6M	$341.5M
YoY Change	127.76%	0.47%	6.85%
TOTAL LIABILITIES
Total Short-Term Liabilities	$196.8M	$117.6M	$117.6M
Total Long-Term Liabilities	$777.8M	$286.6M	$341.5M
Total Liabilities	$974.6M	$459.1M	$459.1M
YoY Change	112.28%	-3.14%	-3.14%
SHAREHOLDERS EQUITY
Retained Earnings		-$188.2M
YoY Change		-25.11%
Common Stock		$259.7M
YoY Change		0.63%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	-$14.70M	$35.00M	$35.00M
YoY Change
Total Liabilities & Shareholders Equity	$959.9M	$494.1M	$494.1M
YoY Change	94.27%	11.25%	11.26%

Cashflow Statement

Concept	2018	2017 Q4	2017
OPERATING ACTIVITIES
Net Income	-$17.66M	$53.50M	$62.99M
YoY Change	-128.03%	256.48%	291.63%
Depreciation, Depletion And Amortization	$25.83M	$2.200M	$9.032M
YoY Change	185.94%	-0.9%	-3.32%
Cash From Operating Activities	$41.56M	$35.80M	-$2.503M
YoY Change	-1760.25%	39.3%	-106.05%
INVESTING ACTIVITIES
Capital Expenditures	$2.724M	-$600.0K	$797.0K
YoY Change	241.78%	20.0%	26.31%
Acquisitions	$348.1M		$0.00
YoY Change
Other Investing Activities	-$240.0M	$100.0K	$27.60M
YoY Change	-969.57%	-99.41%	-26.4%
Cash From Investing Activities	-$242.7M	-$400.0K	$26.80M
YoY Change	-1005.72%	-102.42%	-27.17%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net	$900.0K		$0.00
YoY Change
Cash From Financing Activities	$205.4M	-36.30M	-25.20M
YoY Change	-915.16%	-15.19%	-67.48%
NET CHANGE
Cash From Operating Activities	$41.56M	35.80M	-$2.503M
Cash From Investing Activities	-$242.7M	-400.0K	26.80M
Cash From Financing Activities	$205.4M	-36.30M	-25.20M
Net Change In Cash	$4.243M	-900.0K	-$2.503M
YoY Change	-269.52%	50.0%	-106.05%
FREE CASH FLOW
Cash From Operating Activities	$41.56M	$35.80M	-$2.503M
Capital Expenditures	$2.724M	-$600.0K	$797.0K
Free Cash Flow	$38.83M	$36.40M	-$3.300M
YoY Change	-1276.73%	38.93%	-108.09%

Facts In Submission

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CY2016	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-1877000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-48675000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	63138000	USD
CY2016	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	14208000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	-48053000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	62994000	USD
CY2016	us-gaap	Net Income Loss NetIncomeLoss	16085000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-12154000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-53409000	USD
CY2016	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1121000	USD
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	25826000	USD
CY2017	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	9032000	USD
CY2016	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	9342000	USD
CY2018	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	2884000	USD
CY2017	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	1990000	USD
CY2016	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	2688000	USD
CY2018	us-gaap	Gain Loss On Sale Of Properties GainLossOnSaleOfProperties	0	USD
CY2017	us-gaap	Gain Loss On Sale Of Properties GainLossOnSaleOfProperties	6700000	USD
CY2016	us-gaap	Gain Loss On Sale Of Properties GainLossOnSaleOfProperties	28097000	USD
CY2018	us-gaap	Pension Expense PensionExpense	7660000	USD
CY2017	us-gaap	Pension Expense PensionExpense	4814000	USD
CY2016	us-gaap	Pension Expense PensionExpense	799000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	8474000	USD
CY2017	us-gaap	Share Based Compensation ShareBasedCompensation	2480000	USD
CY2016	us-gaap	Share Based Compensation ShareBasedCompensation	2339000	USD
CY2018	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	12893000	USD
CY2017	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	1417000	USD
CY2016	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	608000	USD
CY2018	bxc	Amortizationof Deferred Gains AmortizationofDeferredGains	-5069000	USD
CY2017	bxc	Amortizationof Deferred Gains AmortizationofDeferredGains	-1389000	USD
CY2016	bxc	Amortizationof Deferred Gains AmortizationofDeferredGains	0	USD
CY2018	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-835000	USD
CY2017	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	378000	USD
CY2016	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	508000	USD
CY2018	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	-60007000	USD
CY2017	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	8214000	USD
CY2016	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	-12687000	USD
CY2018	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-4887000	USD
CY2017	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-3775000	USD
CY2016	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-35374000	USD
CY2018	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	24982000	USD
CY2017	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-12112000	USD
CY2016	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-5352000	USD
CY2018	us-gaap	Increase Decrease In Prepaid Expense IncreaseDecreaseInPrepaidExpense	-3515000	USD
CY2017	us-gaap	Increase Decrease In Prepaid Expense IncreaseDecreaseInPrepaidExpense	1058000	USD
CY2016	us-gaap	Increase Decrease In Prepaid Expense IncreaseDecreaseInPrepaidExpense	-632000	USD
CY2018	us-gaap	Increase Decrease In Pension Plan Obligations IncreaseDecreaseInPensionPlanObligations	-3986000	USD
CY2017	us-gaap	Increase Decrease In Pension Plan Obligations IncreaseDecreaseInPensionPlanObligations	-2996000	USD
CY2016	us-gaap	Increase Decrease In Pension Plan Obligations IncreaseDecreaseInPensionPlanObligations	-4666000	USD
CY2018	us-gaap	Payments For Restructuring PaymentsForRestructuring	0	USD
CY2017	us-gaap	Payments For Restructuring PaymentsForRestructuring	0	USD
CY2016	us-gaap	Payments For Restructuring PaymentsForRestructuring	4812000	USD
CY2018	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	41145000	USD
CY2017	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	2749000	USD
CY2016	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-3157000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	41556000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-2503000	USD
CY2016	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	41397000	USD
CY2018	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	348060000	USD
CY2017	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2016	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	2724000	USD
CY2017	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	797000	USD
CY2016	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	631000	USD
CY2018	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	108051000	USD
CY2017	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	27635000	USD
CY2016	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	37476000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-242733000	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	26838000	USD
CY2016	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	36845000	USD
CY2018	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	3020000	USD
CY2017	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	226000	USD
CY2016	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	178000	USD
CY2018	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	729423000	USD
CY2017	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	435708000	USD
CY2016	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	519873000	USD
CY2018	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	880042000	USD
CY2017	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	441779000	USD
CY2016	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	475112000	USD
CY2018	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	900000	USD
CY2017	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	0	USD
CY2016	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	0	USD
CY2018	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	180000000	USD
CY2017	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0	USD
CY2016	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0	USD
CY2018	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	97847000	USD
CY2017	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	28976000	USD
CY2016	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	41377000	USD
CY2018	us-gaap	Repayments Of Long Term Capital Lease Obligations RepaymentsOfLongTermCapitalLeaseObligations	7497000	USD
CY2017	us-gaap	Repayments Of Long Term Capital Lease Obligations RepaymentsOfLongTermCapitalLeaseObligations	3429000	USD
CY2016	us-gaap	Repayments Of Long Term Capital Lease Obligations RepaymentsOfLongTermCapitalLeaseObligations	2908000	USD
CY2018	us-gaap	Proceeds From Repayments Of Bank Overdrafts ProceedsFromRepaymentsOfBankOverdrafts	-4177000	USD
CY2017	us-gaap	Proceeds From Repayments Of Bank Overdrafts ProceedsFromRepaymentsOfBankOverdrafts	-103000	USD
CY2016	us-gaap	Proceeds From Repayments Of Bank Overdrafts ProceedsFromRepaymentsOfBankOverdrafts	4409000	USD
CY2018	us-gaap	Proceeds From Repayments Of Restricted Cash Financing Activities ProceedsFromRepaymentsOfRestrictedCashFinancingActivities	0	USD
CY2017	us-gaap	Proceeds From Repayments Of Restricted Cash Financing Activities ProceedsFromRepaymentsOfRestrictedCashFinancingActivities	1490000	USD
CY2016	us-gaap	Proceeds From Repayments Of Restricted Cash Financing Activities ProceedsFromRepaymentsOfRestrictedCashFinancingActivities	7628000	USD
CY2018	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	11758000	USD
CY2017	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	0	USD
CY2016	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	602000	USD
CY2018	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	0	USD
CY2017	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-6000	USD
CY2016	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	279000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	205420000	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	-25179000	USD
CY2016	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	-77510000	USD
CY2018	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	4243000	USD
CY2017	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-844000	USD
CY2016	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	732000	USD
CY2017Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	4696000	USD
CY2016Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	5540000	USD
CY2016Q1	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	4808000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	8939000	USD
CY2017Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	4696000	USD
CY2016Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	5540000	USD
CY2018	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	2643000	USD
CY2017	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	1577000	USD
CY2016	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	627000	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	37326000	USD
CY2017	us-gaap	Interest Paid Net InterestPaidNet	19825000	USD
CY2016	us-gaap	Interest Paid Net InterestPaidNet	21236000	USD
CY2018	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	95820000	USD
CY2017	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	11828000	USD
CY2016	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	3433000	USD
CY2016Q1	us-gaap	Stockholders Equity StockholdersEquity	-45896000	USD
CY2016	us-gaap	Net Income Loss NetIncomeLoss	16085000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	264000	USD
CY2016	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	-2141000	USD
CY2016	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	1000	USD
CY2016	bxc	Stock Issued During Period Value Performance Shares StockIssuedDuringPeriodValuePerformanceShares	0	USD
CY2016	bxc	Stock Issued During Period Value New Issues Pursuant To Right Offerings StockIssuedDuringPeriodValueNewIssuesPursuantToRightOfferings	1818000	USD
CY2016	bxc	Impact Of Net Settled Shares For Vested Grants Value ImpactOfNetSettledSharesForVestedGrantsValue	178000	USD
CY2016	us-gaap	Adjustments To Additional Paid In Capital Other AdjustmentsToAdditionalPaidInCapitalOther	206000	USD
CY2016Q4	us-gaap	Stockholders Equity StockholdersEquity	-29841000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	62994000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	14000	USD
CY2017	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	130000	USD
CY2017	us-gaap	Stock Issued During Period Value Restricted Stock Award Gross StockIssuedDuringPeriodValueRestrictedStockAwardGross	1000	USD
CY2017	bxc	Stock Issued During Period Value Performance Shares StockIssuedDuringPeriodValuePerformanceShares	0	USD
CY2017	bxc	Stock Issued During Period Value New Issues Pursuant To Right Offerings StockIssuedDuringPeriodValueNewIssuesPursuantToRightOfferings	1842000	USD
CY2017	bxc	Impact Of Net Settled Shares For Vested Grants Value ImpactOfNetSettledSharesForVestedGrantsValue	226000	USD
CY2017	us-gaap	Adjustments To Additional Paid In Capital Other AdjustmentsToAdditionalPaidInCapitalOther	88000	USD
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	35002000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	-48053000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-14000	USD
CY2018	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	-608000	USD
CY2018	us-gaap	Stock Issued During Period Value Restricted Stock Award Gross StockIssuedDuringPeriodValueRestrictedStockAwardGross	0	USD
CY2018	bxc	Stock Issued During Period Value Performance Shares StockIssuedDuringPeriodValuePerformanceShares	1000	USD
CY2018	bxc	Stock Issued During Period Value New Issues Pursuant To Right Offerings StockIssuedDuringPeriodValueNewIssuesPursuantToRightOfferings	1900000	USD
CY2018	bxc	Impact Of Net Settled Shares For Vested Grants Value ImpactOfNetSettledSharesForVestedGrantsValue	2879000	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Other AdjustmentsToAdditionalPaidInCapitalOther	-12000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	-14663000	USD
CY2018	us-gaap	Use Of Estimates UseOfEstimates	Use of EstimatesWe are required to make estimates and assumptions when preparing our Consolidated Financial Statements in accordance with U.S. GAAP. These estimates and assumptions affect the amounts reported in our Consolidated Financial Statements and the accompanying notes. Actual results could differ materially from those estimates.
CY2018Q4	bxc	Entity Number Of Facilities EntityNumberOfFacilities	70	Facility
CY2018Q4	bxc	Entity Numberof Employees Post Acquisition EntityNumberofEmployeesPostAcquisition	2600	employee
CY2018Q4	bxc	Contract With Customer Standard Terms Of Payment Number Of Days ContractWithCustomerStandardTermsOfPaymentNumberOfDays	10	day
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	2862850000	USD
CY2017	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1815535000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	2862850000	USD
CY2017	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1815535000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	41380000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	6158000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	35222000	USD
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	6200000	USD
CY2017	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	0	USD
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-99000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	8152000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	7527000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	5035000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	3183000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	1873000	USD
CY2018Q4	bxc	Numberof Properties Held For Sale NumberofPropertiesHeldForSale	7	property
CY2017Q4	bxc	Numberof Properties Held For Sale NumberofPropertiesHeldForSale	2	property
CY2018Q4	us-gaap	Escrow Deposit EscrowDeposit	16561000	USD
CY2017Q4	us-gaap	Escrow Deposit EscrowDeposit	11218000	USD
CY2018Q4	us-gaap	Deferred Compensation Liability Current DeferredCompensationLiabilityCurrent	7286000	USD
CY2017Q4	us-gaap	Deferred Compensation Liability Current DeferredCompensationLiabilityCurrent	495000	USD
CY2018Q4	bxc	Property Sales And Other Non Income Taxes Payable Current PropertySalesAndOtherNonIncomeTaxesPayableCurrent	4909000	USD
CY2017Q4	bxc	Property Sales And Other Non Income Taxes Payable Current PropertySalesAndOtherNonIncomeTaxesPayableCurrent	3226000	USD
CY2018Q4	us-gaap	Accrued Insurance Current AccruedInsuranceCurrent	3429000	USD
CY2017Q4	us-gaap	Accrued Insurance Current AccruedInsuranceCurrent	4070000	USD
CY2018Q4	us-gaap	Postemployment Benefits Liability Current PostemploymentBenefitsLiabilityCurrent	2485000	USD
CY2017Q4	us-gaap	Postemployment Benefits Liability Current PostemploymentBenefitsLiabilityCurrent	1674000	USD
CY2018Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	1281000	USD
CY2017Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	14000	USD
CY2018Q4	bxc	Accrued Income Taxes Interest And Other Liabilities Current AccruedIncomeTaxesInterestAndOtherLiabilitiesCurrent	5595000	USD
CY2017Q4	bxc	Accrued Income Taxes Interest And Other Liabilities Current AccruedIncomeTaxesInterestAndOtherLiabilitiesCurrent	1293000	USD
CY2018Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	24985000	USD
CY2017Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	10772000	USD
CY2017	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-659000	USD
CY2016	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	232000	USD
CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-13092000	USD
CY2017	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-45868000	USD
CY2016	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	0	USD
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	3786000	USD
CY2017	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	1054000	USD
CY2016	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	962000	USD
CY2018	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-2749000	USD
CY2017	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-7985000	USD
CY2016	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	0	USD
CY2018	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	0	USD
CY2017	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	49000	USD
CY2016	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	-70000	USD
CY2018	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	0	USD
CY2017	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	0	USD
CY2016	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-3000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-12154000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-53409000	USD
CY2016	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1121000	USD
CY2018	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-12643000	USD
CY2017	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	3355000	USD
CY2016	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	6022000	USD
CY2018	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-2498000	USD
CY2017	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	253000	USD
CY2016	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	595000	USD
CY2018	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	1974000	USD
CY2017	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-87137000	USD
CY2016	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-6319000	USD
CY2018	bxc	Effective Income Tax Rate Reconciliation Transaction Costs Amount EffectiveIncomeTaxRateReconciliationTransactionCostsAmount	1327000	USD
CY2017	bxc	Effective Income Tax Rate Reconciliation Transaction Costs Amount EffectiveIncomeTaxRateReconciliationTransactionCostsAmount	0	USD
CY2016	bxc	Effective Income Tax Rate Reconciliation Transaction Costs Amount EffectiveIncomeTaxRateReconciliationTransactionCostsAmount	0	USD
CY2018	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	936000	USD
CY2017	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	280000	USD
CY2016	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	132000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Amount EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount	-1494000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Amount EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount	-47000	USD
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Amount EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount	0	USD
CY2018	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	344000	USD
CY2017	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	431000	USD
CY2018	us-gaap	Income Tax Reconciliation Tax Contingencies IncomeTaxReconciliationTaxContingencies	-951000	USD
CY2016	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	271000	USD
CY2017	us-gaap	Income Tax Reconciliation Tax Contingencies IncomeTaxReconciliationTaxContingencies	0	USD
CY2016	us-gaap	Income Tax Reconciliation Tax Contingencies IncomeTaxReconciliationTaxContingencies	0	USD
CY2018	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	681000	USD
CY2017	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	0	USD
CY2016	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	0	USD
CY2018	bxc	Effective Income Tax Rate Reconciliation Alternative Minimum Tax Amount EffectiveIncomeTaxRateReconciliationAlternativeMinimumTaxAmount	0	USD
CY2017	bxc	Effective Income Tax Rate Reconciliation Alternative Minimum Tax Amount EffectiveIncomeTaxRateReconciliationAlternativeMinimumTaxAmount	0	USD
CY2016	bxc	Effective Income Tax Rate Reconciliation Alternative Minimum Tax Amount EffectiveIncomeTaxRateReconciliationAlternativeMinimumTaxAmount	232000	USD
CY2018	bxc	Effective Income Tax Rate Reconciliation Tax Cutsand Jobs Actof2017 Amount EffectiveIncomeTaxRateReconciliationTaxCutsandJobsActof2017Amount	0	USD
CY2017	bxc	Effective Income Tax Rate Reconciliation Tax Cutsand Jobs Actof2017 Amount EffectiveIncomeTaxRateReconciliationTaxCutsandJobsActof2017Amount	29387000	USD
CY2016	bxc	Effective Income Tax Rate Reconciliation Tax Cutsand Jobs Actof2017 Amount EffectiveIncomeTaxRateReconciliationTaxCutsandJobsActof2017Amount	0	USD
CY2018	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	170000	USD
CY2017	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	69000	USD
CY2016	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	188000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-12154000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-53409000	USD
CY2016	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1121000	USD
CY2017	bxc	Tax Cuts And Jobs Act Of2017 Incomplete Accounting Change In Tax Rate Deferred Tax Asset Provisional Income Tax Expense Benefit TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxAssetProvisionalIncomeTaxExpenseBenefit	28800000	USD
CY2017	bxc	Tax Cuts And Jobs Act Of2017 Incomplete Accounting Change In Tax Rate Deferred Tax Assets Increase Decrease In Valuation Allowance TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxAssetsIncreaseDecreaseInValuationAllowance	28600000	USD
CY2017	bxc	Tax Cuts And Jobs Act Of2017 Incomplete Accounting Change In Tax Rate Provisional Income Tax Expense Benefit TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateProvisionalIncomeTaxExpenseBenefit	200000	USD
CY2017	bxc	Tax Cuts And Jobs Act Of2017 Incomplete Accounting Release Of Alternative Minimum Tax Credit Carryforward Valuation Allowance TaxCutsAndJobsActOf2017IncompleteAccountingReleaseOfAlternativeMinimumTaxCreditCarryforwardValuationAllowance	800000	USD
CY2017	bxc	Tax Cuts And Jobs Act Of2017 Incomplete Accounting Reclassification Of Alternative Minimum Tax Credit Carryforward To Noncurrent Receivable TaxCutsAndJobsActOf2017IncompleteAccountingReclassificationOfAlternativeMinimumTaxCreditCarryforwardToNoncurrentReceivable	800000	USD
CY2017Q4	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	-53500000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	12300000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Inventory DeferredTaxAssetsInventory	2826000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Inventory DeferredTaxAssetsInventory	1654000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	4717000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	3692000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsReserves	339000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsReserves	72000	USD
CY2018Q4	bxc	Deferred Tax Assets Accounts Receivable DeferredTaxAssetsAccountsReceivable	586000	USD
CY2017Q4	bxc	Deferred Tax Assets Accounts Receivable DeferredTaxAssetsAccountsReceivable	443000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Goodwill And Intangible Assets DeferredTaxAssetsGoodwillAndIntangibleAssets	3169000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Goodwill And Intangible Assets DeferredTaxAssetsGoodwillAndIntangibleAssets	0	USD
CY2018Q4	us-gaap	Deferred Tax Assets Property Plant And Equipment DeferredTaxAssetsPropertyPlantAndEquipment	21547000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Property Plant And Equipment DeferredTaxAssetsPropertyPlantAndEquipment	4614000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	8031000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	7011000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	32325000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	46873000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	418000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	285000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	73958000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	64644000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	12348000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	10415000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	61610000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	54229000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	8665000	USD
CY2017Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	0	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	300000	USD
CY2017Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	376000	USD
CY2018Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	8965000	USD
CY2017Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	376000	USD
CY2018Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	52645000	USD
CY2017Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	53853000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Domestic DeferredTaxAssetsOperatingLossCarryforwardsDomestic	90900000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards State And Local DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal	249300000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	10415000	USD
CY2016Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	97552000	USD
CY2018	bxc	Valuation Allowances Provided For Taxes Related To Income Before Income Taxes ValuationAllowancesProvidedForTaxesRelatedToIncomeBeforeIncomeTaxes	1933000	USD
CY2017	bxc	Valuation Allowances Provided For Taxes Related To Income Before Income Taxes ValuationAllowancesProvidedForTaxesRelatedToIncomeBeforeIncomeTaxes	-4300000	USD
CY2018	bxc	Effective Income Tax Rate Reconciliation Tax Cutsand Jobs Actof2017 Valuation Allowance EffectiveIncomeTaxRateReconciliationTaxCutsandJobsActof2017ValuationAllowance	0	USD
CY2017	bxc	Effective Income Tax Rate Reconciliation Tax Cutsand Jobs Actof2017 Valuation Allowance EffectiveIncomeTaxRateReconciliationTaxCutsandJobsActof2017ValuationAllowance	-29387000	USD
CY2018	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	0	USD
CY2017	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	-53450000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	12348000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	10415000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	184000	USD
CY2016Q1	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	184000	USD
CY2016	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2016Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	184000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	6663000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2018	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	1004000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	0	USD
CY2016	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	0	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	5843000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	184000	USD
CY2016Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	184000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	5500000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	200000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	900000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	6700000	USD
CY2018Q4	us-gaap	Decrease In Unrecognized Tax Benefits Is Reasonably Possible DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible	1100000	USD
CY2018Q4	us-gaap	Long Term Debt LongTermDebt	499675000	USD
CY2017Q4	us-gaap	Long Term Debt LongTermDebt	276677000	USD
CY2018Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	1736000	USD
CY2017Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	0	USD
CY2018Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	497939000	USD
CY2017Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	276677000	USD
CY2017Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	118812000	USD
CY2016Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	113436000	USD
CY2018	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	534000	USD
CY2017	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	633000	USD
CY2018	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	3853000	USD
CY2017	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	4663000	USD
CY2018	us-gaap	Defined Benefit Plan Actuarial Gain Loss DefinedBenefitPlanActuarialGainLoss	9732000	USD
CY2017	us-gaap	Defined Benefit Plan Actuarial Gain Loss DefinedBenefitPlanActuarialGainLoss	-5808000	USD
CY2018	us-gaap	Defined Benefit Plan Curtailments DefinedBenefitPlanCurtailments	0	USD
CY2017	us-gaap	Defined Benefit Plan Curtailments DefinedBenefitPlanCurtailments	-310000	USD
CY2018	us-gaap	Defined Benefit Plan Benefit Obligation Benefits Paid DefinedBenefitPlanBenefitObligationBenefitsPaid	5558000	USD
CY2017	us-gaap	Defined Benefit Plan Benefit Obligation Benefits Paid DefinedBenefitPlanBenefitObligationBenefitsPaid	5418000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	107909000	USD
CY2017Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	118812000	USD
CY2017Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	88452000	USD
CY2016Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	79087000	USD
CY2018	us-gaap	Defined Benefit Plan Actual Return On Plan Assets DefinedBenefitPlanActualReturnOnPlanAssets	-6321000	USD
CY2017	us-gaap	Defined Benefit Plan Actual Return On Plan Assets DefinedBenefitPlanActualReturnOnPlanAssets	11109000	USD
CY2018	us-gaap	Defined Benefit Plan Contributions By Employer DefinedBenefitPlanContributionsByEmployer	4668000	USD
CY2017	us-gaap	Defined Benefit Plan Contributions By Employer DefinedBenefitPlanContributionsByEmployer	3674000	USD
CY2018	us-gaap	Defined Benefit Plan Plan Assets Benefits Paid DefinedBenefitPlanPlanAssetsBenefitsPaid	5558000	USD
CY2017	us-gaap	Defined Benefit Plan Plan Assets Benefits Paid DefinedBenefitPlanPlanAssetsBenefitsPaid	5418000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	81241000	USD
CY2017Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	88452000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Funded Status Of Plan DefinedBenefitPlanFundedStatusOfPlan	-26668000	USD
CY2017Q4	us-gaap	Defined Benefit Plan Funded Status Of Plan DefinedBenefitPlanFundedStatusOfPlan	-30360000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Funded Status Of Plan DefinedBenefitPlanFundedStatusOfPlan	-26700000	USD
CY2017Q4	us-gaap	Defined Benefit Plan Funded Status Of Plan DefinedBenefitPlanFundedStatusOfPlan	-30400000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	600000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-100000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	2100000	USD
CY2018	bxc	Increase Decreasein Funded Statusof Defined Benefit Plan IncreaseDecreaseinFundedStatusofDefinedBenefitPlan	-3700000	USD
CY2018	us-gaap	Defined Benefit Plan Actuarial Gain Loss DefinedBenefitPlanActuarialGainLoss	9700000	USD
CY2018	us-gaap	Defined Benefit Plan Actual Return On Plan Assets DefinedBenefitPlanActualReturnOnPlanAssets	-6300000	USD
CY2018	us-gaap	Defined Benefit Plan Contributions By Employer DefinedBenefitPlanContributionsByEmployer	4700000	USD
CY2018	bxc	Defined Benefit Plan Benefit Obligation Increase In Liability DefinedBenefitPlanBenefitObligationIncreaseInLiability	4400000	USD
CY2018	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	200000	USD
CY2017	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	-200000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Funded Status Of Plan DefinedBenefitPlanFundedStatusOfPlan	-26668000	USD
CY2017Q4	us-gaap	Defined Benefit Plan Funded Status Of Plan DefinedBenefitPlanFundedStatusOfPlan	-30360000	USD
CY2018Q4	bxc	Defined Benefit Plan Unrecognized Prior Service Cost DefinedBenefitPlanUnrecognizedPriorServiceCost	0	USD
CY2017Q4	bxc	Defined Benefit Plan Unrecognized Prior Service Cost DefinedBenefitPlanUnrecognizedPriorServiceCost	0	USD
CY2018Q4	bxc	Defined Benefit Plan Unrecognized Actuarial Loss DefinedBenefitPlanUnrecognizedActuarialLoss	34699000	USD
CY2017Q4	bxc	Defined Benefit Plan Unrecognized Actuarial Loss DefinedBenefitPlanUnrecognizedActuarialLoss	33884000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Amounts Recognized In Balance Sheet DefinedBenefitPlanAmountsRecognizedInBalanceSheet	8031000	USD
CY2017Q4	us-gaap	Defined Benefit Plan Amounts Recognized In Balance Sheet DefinedBenefitPlanAmountsRecognizedInBalanceSheet	3524000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Funded Status Of Plan DefinedBenefitPlanFundedStatusOfPlan	-26668000	USD
CY2017Q4	us-gaap	Defined Benefit Plan Funded Status Of Plan DefinedBenefitPlanFundedStatusOfPlan	-30360000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax	34699000	USD
CY2017Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax	33884000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Amounts Recognized In Balance Sheet DefinedBenefitPlanAmountsRecognizedInBalanceSheet	8031000	USD
CY2017Q4	us-gaap	Defined Benefit Plan Amounts Recognized In Balance Sheet DefinedBenefitPlanAmountsRecognizedInBalanceSheet	3524000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Expected Amortization Of Gain Loss Next Fiscal Year DefinedBenefitPlanExpectedAmortizationOfGainLossNextFiscalYear	-1000000.0	USD
CY2018Q4	us-gaap	Defined Benefit Plan Accumulated Benefit Obligation DefinedBenefitPlanAccumulatedBenefitObligation	107400000	USD
CY2017Q4	us-gaap	Defined Benefit Plan Accumulated Benefit Obligation DefinedBenefitPlanAccumulatedBenefitObligation	118200000	USD
CY2018	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	534000	USD
CY2017	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	633000	USD
CY2016	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	996000	USD
CY2018	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	3853000	USD
CY2017	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	4663000	USD
CY2016	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	4901000	USD
CY2018	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	5309000	USD
CY2017	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	6538000	USD
CY2016	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	6224000	USD
CY2018	bxc	Defined Benefit Plan Amortization Of Unrecognized Gains Losses DefinedBenefitPlanAmortizationOfUnrecognizedGainsLosses	1084000	USD
CY2017	bxc	Defined Benefit Plan Amortization Of Unrecognized Gains Losses DefinedBenefitPlanAmortizationOfUnrecognizedGainsLosses	1056000	USD
CY2016	bxc	Defined Benefit Plan Amortization Of Unrecognized Gains Losses DefinedBenefitPlanAmortizationOfUnrecognizedGainsLosses	1126000	USD
CY2018	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	162000	USD
CY2017	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	-186000	USD
CY2016	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	799000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.0437
CY2017Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.0369
CY2018	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	0.0369
CY2017	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	0.0426
CY2018	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.0600
CY2017	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.0810
CY2018	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.0600
CY2018Q4	us-gaap	Defined Benefit Plan Plan Assets Target Allocation Percentage DefinedBenefitPlanPlanAssetsTargetAllocationPercentage	1
CY2018Q4	us-gaap	Defined Benefit Plan Weighted Average Asset Allocations DefinedBenefitPlanWeightedAverageAssetAllocations	1
CY2018Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Next Twelve Months DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths	6345000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Two DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo	6585000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Three DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree	6844000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Four DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour	6965000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Five DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive	7080000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Five Fiscal Years Thereafter DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter	35800000	USD
CY2018	bxc	Number Of Minimum Required Quarterly Cash Contributions During Fiscal NumberOfMinimumRequiredQuarterlyCashContributionsDuringFiscal	4	payment
CY2018Q4	us-gaap	Defined Benefit Plan Expected Future Employer Contributions Next Fiscal Year DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear	2200000	USD
CY2018	us-gaap	Multiemployer Plan Contributions By Employer MultiemployerPlanContributionsByEmployer	500000	USD
CY2017	us-gaap	Multiemployer Plan Contributions By Employer MultiemployerPlanContributionsByEmployer	900000	USD
CY2016	us-gaap	Multiemployer Plan Contributions By Employer MultiemployerPlanContributionsByEmployer	1400000	USD
CY2017Q4	bxc	Multiemployer Plans Estimated Withdrawal Liability MultiemployerPlansEstimatedWithdrawalLiability	5000000.0	USD
CY2018	bxc	Multiemployer Plans Warranty Liability Payment Period MultiemployerPlansWarrantyLiabilityPaymentPeriod	P19Y
CY2018	bxc	Multiemployer Plans Employer Contribution Amount As A Percentage Of Total Contributions MultiemployerPlansEmployerContributionAmountAsAPercentageOfTotalContributions	0.0006
CY2018Q4	bxc	Multiemployer Plans Withdrawal Liability MultiemployerPlansWithdrawalLiability	7100000	USD
CY2018	bxc	Defined Contribution Plan Numberof Plans DefinedContributionPlanNumberofPlans	2	defined_contribution_plan
CY2018	bxc	Sharebased Compensation Arrangementby Sharebased Payment Award Numberof Sharebased Compensation Plans SharebasedCompensationArrangementbySharebasedPaymentAwardNumberofSharebasedCompensationPlans	3	plan
CY2016	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	156000	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	9230000	shares
CY2018	us-gaap	Allocated Share Based Compensation Expense Net Of Tax AllocatedShareBasedCompensationExpenseNetOfTax	15311000	USD
CY2017	us-gaap	Allocated Share Based Compensation Expense Net Of Tax AllocatedShareBasedCompensationExpenseNetOfTax	2480000	USD
CY2016	us-gaap	Allocated Share Based Compensation Expense Net Of Tax AllocatedShareBasedCompensationExpenseNetOfTax	2339000	USD
CY2018	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	3900000	USD
CY2017	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	1000000.0	USD
CY2016	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	900000	USD
CY2018	us-gaap	Adjustment To Additional Paid In Capital Income Tax Effect From Share Based Compensation Net AdjustmentToAdditionalPaidInCapitalIncomeTaxEffectFromShareBasedCompensationNet	1500000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	-48053000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	62994000	USD
CY2016	us-gaap	Net Income Loss NetIncomeLoss	16085000	USD
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	9230000	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	9045000	shares
CY2016	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	8913000	shares
CY2018	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
CY2017	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	201000	shares
CY2016	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	9069000	shares
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	9246000	shares
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-5.21
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	6.96
CY2016	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.80
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-5.21
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	6.81
CY2016	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.77
CY2018	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	194222	shares
CY2017	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	80000	shares
CY2016	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	289333	shares
CY2018	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	194222	shares
CY2017	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	80000	shares
CY2016	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	289333	shares
CY2018	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	13600000	USD
CY2017	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	6100000	USD
CY2016	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	4200000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	11980000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	9928000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	8435000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	8066000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	7539000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	60847000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	106795000	USD
CY2018Q4	bxc	Carrying Amount Of Capital Leases CarryingAmountOfCapitalLeases	159600000	USD
CY2018Q4	bxc	Net Book Value Of Capital Leases NetBookValueOfCapitalLeases	139200000	USD
CY2017Q4	bxc	Carrying Amount Of Capital Leases CarryingAmountOfCapitalLeases	30300000	USD
CY2017Q4	bxc	Net Book Value Of Capital Leases NetBookValueOfCapitalLeases	16400000	USD
CY2018Q4	bxc	Capital Leases Future Minimum Principal Payments Due Current CapitalLeasesFutureMinimumPrincipalPaymentsDueCurrent	7487000	USD
CY2018Q4	bxc	Capital Leases Future Minimum Interest Payments Due Current CapitalLeasesFutureMinimumInterestPaymentsDueCurrent	13803000	USD
CY2018Q4	bxc	Capital Leases Future Minimum Principal Payments Due In Two Years CapitalLeasesFutureMinimumPrincipalPaymentsDueInTwoYears	6741000	USD
CY2018Q4	bxc	Capital Leases Future Minimum Interest Payments Due In Two Years CapitalLeasesFutureMinimumInterestPaymentsDueInTwoYears	13426000	USD
CY2018Q4	bxc	Capital Leases Future Minimum Principal Payments Due In Three Years CapitalLeasesFutureMinimumPrincipalPaymentsDueInThreeYears	4403000	USD
CY2018Q4	bxc	Capital Leases Future Minimum Interest Payments Due In Three Years CapitalLeasesFutureMinimumInterestPaymentsDueInThreeYears	13129000	USD
CY2018Q4	bxc	Capital Leases Future Minimum Principal Payments Due In Four Years CapitalLeasesFutureMinimumPrincipalPaymentsDueInFourYears	3602000	USD
CY2018Q4	bxc	Capital Leases Future Minimum Interest Payments Due In Four Years CapitalLeasesFutureMinimumInterestPaymentsDueInFourYears	12920000	USD
CY2018Q4	bxc	Capital Leases Future Minimum Principal Payments Due In Five Years CapitalLeasesFutureMinimumPrincipalPaymentsDueInFiveYears	3206000	USD
CY2018Q4	bxc	Capital Leases Future Minimum Interest Payments Due In Five Years CapitalLeasesFutureMinimumInterestPaymentsDueInFiveYears	12727000	USD
CY2018Q4	bxc	Capital Leases Future Minimum Principal Payments Due In Thereafter CapitalLeasesFutureMinimumPrincipalPaymentsDueInThereafter	125602000	USD
CY2018Q4	bxc	Capital Leases Future Minimum Interest Payments Due In Thereafter CapitalLeasesFutureMinimumInterestPaymentsDueInThereafter	170028000	USD
CY2018Q4	bxc	Capital Leases Future Minimum Principal Payments Due CapitalLeasesFutureMinimumPrincipalPaymentsDue	151041000	USD
CY2018Q4	bxc	Capital Leases Future Minimum Interest Payments Due CapitalLeasesFutureMinimumInterestPaymentsDue	236033000	USD
CY2018Q4	us-gaap	Sale Leaseback Transaction Deferred Gain Gross SaleLeasebackTransactionDeferredGainGross	83900000	USD
CY2017Q4	us-gaap	Sale Leaseback Transaction Deferred Gain Gross SaleLeasebackTransactionDeferredGainGross	13700000	USD
CY2018Q4	dei	Entity Number Of Employees EntityNumberOfEmployees	2400	employee
CY2018Q4	bxc	Percentage Of Employees Represented By Various Labor Unions PercentageOfEmployeesRepresentedByVariousLaborUnions	0.20
CY2018	bxc	Number Of Collective Bargaining Agreements Up For Renewalin Next Fiscal Year NumberOfCollectiveBargainingAgreementsUpForRenewalinNextFiscalYear	7	Agreement
CY2018	bxc	Number Of Employees Coveredby Collective Bargaining Agreements Up For Renewalin Next Fiscal Year NumberOfEmployeesCoveredbyCollectiveBargainingAgreementsUpForRenewalinNextFiscalYear	130	employee
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-600000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	100000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-1900000	USD
CY2016	us-gaap	Oci Before Reclassifications Net Of Tax Attributable To Parent OciBeforeReclassificationsNetOfTaxAttributableToParent	-2663000	USD
CY2016	us-gaap	Reclassification From Aoci Current Period Net Of Tax Attributable To Parent ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent	786000	USD
CY2017	us-gaap	Oci Before Reclassifications Net Of Tax Attributable To Parent OciBeforeReclassificationsNetOfTaxAttributableToParent	1200000	USD
CY2017	us-gaap	Reclassification From Aoci Current Period Net Of Tax Attributable To Parent ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent	-1056000	USD
CY2018	us-gaap	Oci Before Reclassifications Net Of Tax Attributable To Parent OciBeforeReclassificationsNetOfTaxAttributableToParent	-622000	USD
CY2018	us-gaap	Reclassification From Aoci Current Period Net Of Tax Attributable To Parent ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent	0	USD
CY2016Q2	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	200000000	shares
CY2016Q2	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	20000000	shares
CY2016Q2	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	30000000	shares

Files In Submission

Name	View Source	Status
0001301787-19-000013-index-headers.html	Edgar Link	pending
0001301787-19-000013-index.html	Edgar Link	pending
0001301787-19-000013.txt	Edgar Link	pending
0001301787-19-000013-xbrl.zip	Edgar Link	pending
a1229201810-kxex312.htm	Edgar Link	pending
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a1229201810k-ex211subs.htm	Edgar Link	pending
a1229201810k-ex231bdoc.htm	Edgar Link	pending
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a1229201810k-ex321.htm	Edgar Link	pending
a1229201810k-ex322.htm	Edgar Link	pending
bxc-20181229.xsd	Edgar Link	pending
bxc-20181229_cal.xml	Edgar Link	unprocessable
bxc-20181229_def.xml	Edgar Link	unprocessable
bxc-20181229_lab.xml	Edgar Link	unprocessable
bxc-20181229_pre.xml	Edgar Link	unprocessable
bxc1229201810-k.htm	Edgar Link	pending
bxc1229201810-k_htm.xml	Edgar Link	completed
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
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$BXC
BlueLinx Holdings Inc. Stock $bxc

2018 Form 10-K Financial Statement

#000130178719000013 Filed on March 13, 2019

Income Statement

Balance Sheet

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Facts In Submission

Files In Submission

$BXC BlueLinx Holdings Inc. Stock $bxc

2018 Form 10-K Financial Statement

#000130178719000013 Filed on March 13, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$BXC
BlueLinx Holdings Inc. Stock $bxc