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Commitments and Contingencies (Detail Textuals)	Jun. 29, 2013 Employee Agreement
Commitments and Contingencies [Abstract]
Percentage of employees represented by various labor unions	32.00%
Number of collective bargaining agreement	41
Number of collective bargaining agreements up for renewal	11
Number of employees under collective bargaining agreements up for renewal	55

X

- Definition

Represents number of collective bargaining agreements.

+ References

No definition available.

+ Details

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X

- Definition

Represents number of collective bargaining agreements up for renewal.

+ References

No definition available.

+ Details

Name:	bxc_NumberOfCollectiveBargainingAgreementsUpForRenewal
Namespace Prefix:	bxc_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Represents number of employees covered under collective bargaining agreements up for renewal.

+ References

No definition available.

+ Details

Name:	bxc_NumberOfEmployeesCoveredUnderCollectiveBargainingAgreementsUpForRenewal
Namespace Prefix:	bxc_
Data Type:	xbrli:decimalItemType
Balance Type:	na
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X

- Definition

Percentage of employees represented by various labor unions.

+ References

No definition available.

+ Details

Name:	bxc_PercentageOfEmployeesRepresentedByVariousLaborUnions
Namespace Prefix:	bxc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Details

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