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Workers' Compensation (Details Textual) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Jun. 30, 2012
Workers Compensation (Textual) [Abstract]
Additional workers' compensation expense	$ 3.1

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- Details

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Namespace Prefix:	bbsi_
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Balance Type:	na
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- Definition

The aggregate amount of expenditures for salaries, wages, profit sharing and incentive compensation, and other employee benefits, including equity-based compensation, and pension and other postretirement benefit expense.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.4)

-URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688

+ Details

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