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Fair Value Measurements (Details Textual) (USD $) In Millions, unless otherwise specified	Jun. 30, 2012
Fair Value Measurements (Textual) [Abstract]
Mortgage discounted carrying value	$ 227.9
Mortgage fair value	$ 227.8

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- Definition

Mortgage loan discounted carrying value disclosure.

+ References

No definition available.

+ Details

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Namespace Prefix:	bxc_
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- Definition

Mortgage loan fair value disclosure.

+ References

No definition available.

+ Details

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