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Fair Value Measurement (Details Textual)	6 Months Ended
	Jun. 30, 2012
Fair Value Measurement (Details Textual) [Abstract]
Fair value measured non-recurring basis	no assets or liabilities

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- Definition

Fair value measured nonrecurring basis.

+ References

No definition available.

+ Details

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Namespace Prefix:	bbsi_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

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- Details

Name:	bbsi_FairValueMeasurementDetailsTextualAbstract
Namespace Prefix:	bbsi_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration