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Represents the number of major customers.

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Accrued customer rebates and allowances as of the balance sheet date.

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The number of collective bargaining arrangements the entity is subject to.

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Represents the number of installments the long-term incentive plan awards to be paid.

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Represents the period of payments for long-term incentive plan awards from the specified date following the year the award was granted.

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Rebates and allowances receivable from the vendor as of the balance sheet date.

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Number of persons employed by the Entity

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A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible.

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-Name Regulation S-X (SX)

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The carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees.

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For each income statement presented, the amount charged to expense for amortization of capitalized computer software costs.

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The carrying amount of capitalized computer software costs net of accumulated amortization as of the balance sheet date.

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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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Fair value portion of notes payable.

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 20, 22

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Amount of payroll tax expense, compensation, postemployment and benefit-related expenses not elsewhere specified in the taxonomy (such as health plan, profit sharing, incentives, tuition reimbursement, other fringe benefits and perquisites) incurred in the period.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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Carrying amount of accrued known and estimated losses incurred as of the balance sheet date for which no insurance coverage exists, and for which a claim has been made or is probable of being asserted, typically arising from workmen's compensation-type of incidents and personal injury to nonemployees from accidents on the entity's property that are expected to be paid within one year (or the normal operating cycle, if longer).

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Carrying amount of accrued known and estimated losses incurred as of the balance sheet date for which no insurance coverage exists, and for which a claim has been made or is probable of being asserted, typically arising from workmen's compensation-type of incidents and personal injury to nonemployees from accidents on the entity's property that are expected to be paid after one year (or the normal operating cycle, if longer).

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Cost incurred during the reporting period in transporting goods and services to customers. Includes freight-out costs.

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Summary of Significant Accounting Policies (Details) (USD $)	12 Months Ended
	Dec. 31, 2014 employee Integer	Dec. 31, 2013	Dec. 31, 2012 tranch
Trade Accounts Receivables and Allowance for Doubtful Accounts
Trade receivables, allowances	$ 2,062,000	$ 2,509,000
Vendor and Customer Rebates and Allowances
Vendor rebates and allowances	6,100,000bcc_VendorRebatesAndAllowances	4,700,000bcc_VendorRebatesAndAllowances
Customer rebates payable	24,700,000bcc_CustomerRebatesAndAllowances	24,200,000bcc_CustomerRebatesAndAllowances
Asset Retirement Obligation
Asset retirement obligations	200,000us-gaap_AssetRetirementObligation	400,000us-gaap_AssetRetirementObligation
Long Term Incentive Cash Plan
Number of installments the long-term incentive plan awards to be paid			3
Period of payments for long-term incentive plan awards from the specified date following the year the award was granted			3 years
LTIP Expense			6,700,000us-gaap_OtherLaborRelatedExpenses
Deferred Software Costs
Capitalized Computer Software, Net	4,400,000us-gaap_CapitalizedComputerSoftwareNet	3,700,000us-gaap_CapitalizedComputerSoftwareNet
Amortization of deferred software costs	1,300,000	1,300,000	1,200,000
Labor Concentration and Unions
Number of employees	5,650dei_EntityNumberOfEmployees
Number of collective bargaining arrangements	9
Self Insurance
Self insurance liabilities, current	7,800,000us-gaap_SelfInsuranceReserveCurrent	7,900,000us-gaap_SelfInsuranceReserveCurrent
Self insurance liabilities, long-term	10,700,000us-gaap_SelfInsuranceReserveNoncurrent	10,100,000us-gaap_SelfInsuranceReserveNoncurrent
Software and Software Development Costs [Member] \| Minimum [Member]
Deferred Software Costs
Property, Plant and Equipment, Useful Life	3 years
Software and Software Development Costs [Member] \| Maximum [Member]
Deferred Software Costs
Property, Plant and Equipment, Useful Life	5 years
Reported Value Measurement [Member]
Financial Instruments
Fixed-rate debt	300,000,000
Level 2 [Member]
Financial Instruments
Fixed-rate debt	315,000,000
Fair Value, Measurements, Recurring [Member] \| Level 1 [Member] \| Money Market Funds [Member]
Financial Instruments
Cash equivalents, fair value	137,600,000	85,800,000
Sales Revenue, Net [Member] \| Customer Concentration Risk [Member] \| Top Ten Customers [Member]
Risks and Uncertainties
Concentration Risk Number of Customers	10
Concentration risk	28.00%
Accounts Receivable [Member] \| Credit Concentration Risk [Member] \| Single Customer [Member]
Risks and Uncertainties
Concentration risk	11.00%	13.00%
Workforce Subject to Collective Bargaining Arrangements [Member] \| Unionized Employees Concentration Risk [Member]
Risks and Uncertainties
Concentration risk	26.00%
Workforce Subject to Collective Bargaining Arrangements Expiring within One Year [Member] \| Unionized Employees Concentration Risk [Member]
Risks and Uncertainties
Concentration risk	0.00%
Building Materials Distribution [Member]
Revenue Recognition
Shipping and handling costs	$ 104,800,000	$ 94,800,000	$ 89,300,000