XML 43 R27.htm IDEA: XBRL DOCUMENT v2.4.1.9

Fair Value Measurement - Summary of Long-Term Restricted Marketable Securities Component and Workers' Compensation Deposits (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Long-Term Available-for-Sale [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Cost	$ 6,019us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByMeasurementBasisAxis = bbsi_LongTermAvailableForSaleMember	$ 20,940us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByMeasurementBasisAxis = bbsi_LongTermAvailableForSaleMember
Long-Term Available-for-Sale [Member] | Municipal Bonds [Member] | Level 2 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Cost	3,547us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_FairValueByMeasurementBasisAxis = bbsi_LongTermAvailableForSaleMember / us-gaap_InvestmentTypeAxis = us-gaap_MunicipalBondsMember	3,843us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_FairValueByMeasurementBasisAxis = bbsi_LongTermAvailableForSaleMember / us-gaap_InvestmentTypeAxis = us-gaap_MunicipalBondsMember
Long-Term Available-for-Sale [Member] | Corporate Bonds [Member] | Level 2 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Cost	2,472us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_FairValueByMeasurementBasisAxis = bbsi_LongTermAvailableForSaleMember / us-gaap_InvestmentTypeAxis = us-gaap_CorporateDebtSecuritiesMember	2,153us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_FairValueByMeasurementBasisAxis = bbsi_LongTermAvailableForSaleMember / us-gaap_InvestmentTypeAxis = us-gaap_CorporateDebtSecuritiesMember
Long-Term Restricted Marketable Securities [Member] | Long-Term Available-for-Sale [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Cost	78,178us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByAssetClassAxis = bbsi_RestrictedMarketableSecuritiesMember / us-gaap_FairValueByMeasurementBasisAxis = bbsi_LongTermAvailableForSaleMember	58,165us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByAssetClassAxis = bbsi_RestrictedMarketableSecuritiesMember / us-gaap_FairValueByMeasurementBasisAxis = bbsi_LongTermAvailableForSaleMember
Gross Unrealized Gains	21bbsi_AvailableForSaleSecuritiesGrossUnrealizedGainLossAccumulatedInInvestments / us-gaap_FairValueByAssetClassAxis = bbsi_RestrictedMarketableSecuritiesMember / us-gaap_FairValueByMeasurementBasisAxis = bbsi_LongTermAvailableForSaleMember	18bbsi_AvailableForSaleSecuritiesGrossUnrealizedGainLossAccumulatedInInvestments / us-gaap_FairValueByAssetClassAxis = bbsi_RestrictedMarketableSecuritiesMember / us-gaap_FairValueByMeasurementBasisAxis = bbsi_LongTermAvailableForSaleMember
Recorded Basis	78,199us-gaap_AvailableforsaleSecuritiesRestrictedNoncurrent / us-gaap_FairValueByAssetClassAxis = bbsi_RestrictedMarketableSecuritiesMember / us-gaap_FairValueByMeasurementBasisAxis = bbsi_LongTermAvailableForSaleMember	58,183us-gaap_AvailableforsaleSecuritiesRestrictedNoncurrent / us-gaap_FairValueByAssetClassAxis = bbsi_RestrictedMarketableSecuritiesMember / us-gaap_FairValueByMeasurementBasisAxis = bbsi_LongTermAvailableForSaleMember
Long-Term Restricted Marketable Securities [Member] | Long-Term Available-for-Sale [Member] | Money Market Funds Held in Trust [Member] | Level 2 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Cost	65,505us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByAssetClassAxis = bbsi_RestrictedMarketableSecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_FairValueByMeasurementBasisAxis = bbsi_LongTermAvailableForSaleMember / us-gaap_InvestmentTypeAxis = us-gaap_MoneyMarketFundsMember	46,310us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByAssetClassAxis = bbsi_RestrictedMarketableSecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_FairValueByMeasurementBasisAxis = bbsi_LongTermAvailableForSaleMember / us-gaap_InvestmentTypeAxis = us-gaap_MoneyMarketFundsMember
Gross Unrealized Gains	0bbsi_AvailableForSaleSecuritiesGrossUnrealizedGainLossAccumulatedInInvestments / us-gaap_FairValueByAssetClassAxis = bbsi_RestrictedMarketableSecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_FairValueByMeasurementBasisAxis = bbsi_LongTermAvailableForSaleMember / us-gaap_InvestmentTypeAxis = us-gaap_MoneyMarketFundsMember	0bbsi_AvailableForSaleSecuritiesGrossUnrealizedGainLossAccumulatedInInvestments / us-gaap_FairValueByAssetClassAxis = bbsi_RestrictedMarketableSecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_FairValueByMeasurementBasisAxis = bbsi_LongTermAvailableForSaleMember / us-gaap_InvestmentTypeAxis = us-gaap_MoneyMarketFundsMember
Recorded Basis	65,505us-gaap_AvailableforsaleSecuritiesRestrictedNoncurrent / us-gaap_FairValueByAssetClassAxis = bbsi_RestrictedMarketableSecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_FairValueByMeasurementBasisAxis = bbsi_LongTermAvailableForSaleMember / us-gaap_InvestmentTypeAxis = us-gaap_MoneyMarketFundsMember	46,310us-gaap_AvailableforsaleSecuritiesRestrictedNoncurrent / us-gaap_FairValueByAssetClassAxis = bbsi_RestrictedMarketableSecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_FairValueByMeasurementBasisAxis = bbsi_LongTermAvailableForSaleMember / us-gaap_InvestmentTypeAxis = us-gaap_MoneyMarketFundsMember
Long-Term Restricted Marketable Securities [Member] | Long-Term Available-for-Sale [Member] | Municipal Bonds [Member] | Level 2 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Cost	4,217us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByAssetClassAxis = bbsi_RestrictedMarketableSecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_FairValueByMeasurementBasisAxis = bbsi_LongTermAvailableForSaleMember / us-gaap_InvestmentTypeAxis = us-gaap_MunicipalBondsMember	4,352us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByAssetClassAxis = bbsi_RestrictedMarketableSecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_FairValueByMeasurementBasisAxis = bbsi_LongTermAvailableForSaleMember / us-gaap_InvestmentTypeAxis = us-gaap_MunicipalBondsMember
Gross Unrealized Gains	20bbsi_AvailableForSaleSecuritiesGrossUnrealizedGainLossAccumulatedInInvestments / us-gaap_FairValueByAssetClassAxis = bbsi_RestrictedMarketableSecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_FairValueByMeasurementBasisAxis = bbsi_LongTermAvailableForSaleMember / us-gaap_InvestmentTypeAxis = us-gaap_MunicipalBondsMember	21bbsi_AvailableForSaleSecuritiesGrossUnrealizedGainLossAccumulatedInInvestments / us-gaap_FairValueByAssetClassAxis = bbsi_RestrictedMarketableSecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_FairValueByMeasurementBasisAxis = bbsi_LongTermAvailableForSaleMember / us-gaap_InvestmentTypeAxis = us-gaap_MunicipalBondsMember
Recorded Basis	4,237us-gaap_AvailableforsaleSecuritiesRestrictedNoncurrent / us-gaap_FairValueByAssetClassAxis = bbsi_RestrictedMarketableSecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_FairValueByMeasurementBasisAxis = bbsi_LongTermAvailableForSaleMember / us-gaap_InvestmentTypeAxis = us-gaap_MunicipalBondsMember	4,373us-gaap_AvailableforsaleSecuritiesRestrictedNoncurrent / us-gaap_FairValueByAssetClassAxis = bbsi_RestrictedMarketableSecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_FairValueByMeasurementBasisAxis = bbsi_LongTermAvailableForSaleMember / us-gaap_InvestmentTypeAxis = us-gaap_MunicipalBondsMember
Long-Term Restricted Marketable Securities [Member] | Long-Term Available-for-Sale [Member] | Corporate Bonds [Member] | Level 2 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Cost	3,704us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByAssetClassAxis = bbsi_RestrictedMarketableSecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_FairValueByMeasurementBasisAxis = bbsi_LongTermAvailableForSaleMember / us-gaap_InvestmentTypeAxis = us-gaap_CorporateDebtSecuritiesMember	3,540us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByAssetClassAxis = bbsi_RestrictedMarketableSecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_FairValueByMeasurementBasisAxis = bbsi_LongTermAvailableForSaleMember / us-gaap_InvestmentTypeAxis = us-gaap_CorporateDebtSecuritiesMember
Gross Unrealized Gains	1bbsi_AvailableForSaleSecuritiesGrossUnrealizedGainLossAccumulatedInInvestments / us-gaap_FairValueByAssetClassAxis = bbsi_RestrictedMarketableSecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_FairValueByMeasurementBasisAxis = bbsi_LongTermAvailableForSaleMember / us-gaap_InvestmentTypeAxis = us-gaap_CorporateDebtSecuritiesMember	(3)bbsi_AvailableForSaleSecuritiesGrossUnrealizedGainLossAccumulatedInInvestments / us-gaap_FairValueByAssetClassAxis = bbsi_RestrictedMarketableSecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_FairValueByMeasurementBasisAxis = bbsi_LongTermAvailableForSaleMember / us-gaap_InvestmentTypeAxis = us-gaap_CorporateDebtSecuritiesMember
Recorded Basis	3,705us-gaap_AvailableforsaleSecuritiesRestrictedNoncurrent / us-gaap_FairValueByAssetClassAxis = bbsi_RestrictedMarketableSecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_FairValueByMeasurementBasisAxis = bbsi_LongTermAvailableForSaleMember / us-gaap_InvestmentTypeAxis = us-gaap_CorporateDebtSecuritiesMember	3,537us-gaap_AvailableforsaleSecuritiesRestrictedNoncurrent / us-gaap_FairValueByAssetClassAxis = bbsi_RestrictedMarketableSecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_FairValueByMeasurementBasisAxis = bbsi_LongTermAvailableForSaleMember / us-gaap_InvestmentTypeAxis = us-gaap_CorporateDebtSecuritiesMember
Long-Term Restricted Marketable Securities [Member] | Long-Term Available-for-Sale [Member] | U.S. Treasuries [Member] | Level 1 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Cost	4,752us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByAssetClassAxis = bbsi_RestrictedMarketableSecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_FairValueByMeasurementBasisAxis = bbsi_LongTermAvailableForSaleMember / us-gaap_InvestmentTypeAxis = us-gaap_USTreasurySecuritiesMember	3,963us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByAssetClassAxis = bbsi_RestrictedMarketableSecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_FairValueByMeasurementBasisAxis = bbsi_LongTermAvailableForSaleMember / us-gaap_InvestmentTypeAxis = us-gaap_USTreasurySecuritiesMember
Gross Unrealized Gains	0bbsi_AvailableForSaleSecuritiesGrossUnrealizedGainLossAccumulatedInInvestments / us-gaap_FairValueByAssetClassAxis = bbsi_RestrictedMarketableSecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_FairValueByMeasurementBasisAxis = bbsi_LongTermAvailableForSaleMember / us-gaap_InvestmentTypeAxis = us-gaap_USTreasurySecuritiesMember	0bbsi_AvailableForSaleSecuritiesGrossUnrealizedGainLossAccumulatedInInvestments / us-gaap_FairValueByAssetClassAxis = bbsi_RestrictedMarketableSecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_FairValueByMeasurementBasisAxis = bbsi_LongTermAvailableForSaleMember / us-gaap_InvestmentTypeAxis = us-gaap_USTreasurySecuritiesMember
Recorded Basis	4,752us-gaap_AvailableforsaleSecuritiesRestrictedNoncurrent / us-gaap_FairValueByAssetClassAxis = bbsi_RestrictedMarketableSecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_FairValueByMeasurementBasisAxis = bbsi_LongTermAvailableForSaleMember / us-gaap_InvestmentTypeAxis = us-gaap_USTreasurySecuritiesMember	3,963us-gaap_AvailableforsaleSecuritiesRestrictedNoncurrent / us-gaap_FairValueByAssetClassAxis = bbsi_RestrictedMarketableSecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_FairValueByMeasurementBasisAxis = bbsi_LongTermAvailableForSaleMember / us-gaap_InvestmentTypeAxis = us-gaap_USTreasurySecuritiesMember
Long-Term Restricted Marketable Securities [Member] | Current Available-for-Sale [Member] | Money Market Funds Held in Trust [Member] | Level 2 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Cost	12,533us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByAssetClassAxis = bbsi_RestrictedMarketableSecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_FairValueByMeasurementBasisAxis = bbsi_CurrentAvailableForSaleMember / us-gaap_InvestmentTypeAxis = us-gaap_MoneyMarketFundsMember	3,776us-gaap_AvailableForSaleSecuritiesAmortizedCost / us-gaap_FairValueByAssetClassAxis = bbsi_RestrictedMarketableSecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_FairValueByMeasurementBasisAxis = bbsi_CurrentAvailableForSaleMember / us-gaap_InvestmentTypeAxis = us-gaap_MoneyMarketFundsMember
Gross Unrealized Gains	0bbsi_AvailableForSaleSecuritiesGrossUnrealizedGainLossAccumulatedInInvestments / us-gaap_FairValueByAssetClassAxis = bbsi_RestrictedMarketableSecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_FairValueByMeasurementBasisAxis = bbsi_CurrentAvailableForSaleMember / us-gaap_InvestmentTypeAxis = us-gaap_MoneyMarketFundsMember	0bbsi_AvailableForSaleSecuritiesGrossUnrealizedGainLossAccumulatedInInvestments / us-gaap_FairValueByAssetClassAxis = bbsi_RestrictedMarketableSecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_FairValueByMeasurementBasisAxis = bbsi_CurrentAvailableForSaleMember / us-gaap_InvestmentTypeAxis = us-gaap_MoneyMarketFundsMember
Recorded Basis	$ 12,533us-gaap_AvailableforsaleSecuritiesRestrictedCurrent / us-gaap_FairValueByAssetClassAxis = bbsi_RestrictedMarketableSecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_FairValueByMeasurementBasisAxis = bbsi_CurrentAvailableForSaleMember / us-gaap_InvestmentTypeAxis = us-gaap_MoneyMarketFundsMember	$ 3,776us-gaap_AvailableforsaleSecuritiesRestrictedCurrent / us-gaap_FairValueByAssetClassAxis = bbsi_RestrictedMarketableSecuritiesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_FairValueByMeasurementBasisAxis = bbsi_CurrentAvailableForSaleMember / us-gaap_InvestmentTypeAxis = us-gaap_MoneyMarketFundsMember

X

- Definition

Available for sale securities gross unrealized gain loss accumulated in investments.

+ References

No definition available.

+ Details

Name:	bbsi_AvailableForSaleSecuritiesGrossUnrealizedGainLossAccumulatedInInvestments
Namespace Prefix:	bbsi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.2)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_AvailableForSaleSecuritiesAmortizedCost
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Investments in debt and equity securities which are categorized neither as trading securities nor held-to-maturity securities, which are intended be sold or mature within one year from the balance sheet date or the normal operating cycle, whichever is longer, and that are pledged to one or more secured parties who have the right to buy, sell, or re-pledge the collateral.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(b))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 25

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=28360136&loc=d3e22054-111558



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 6

-Article 9



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.2)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 08

-Paragraph b

-Article 4

+ Details

Name:	us-gaap_AvailableforsaleSecuritiesRestrictedCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Investments in debt and equity securities which are categorized neither as trading securities nor held-to-maturity securities, which are intended be sold or mature greater than one year from the balance sheet date or the normal operating cycle, whichever is longer, and that are pledged to one or more secured parties who have the right to buy, sell, or re-pledge the collateral.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(b))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 25

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=28360136&loc=d3e22054-111558



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.12)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 6

-Article 9

+ Details

Name:	us-gaap_AvailableforsaleSecuritiesRestrictedNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

Name:	us-gaap_FairValueInputsAssetsQuantitativeInformationLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_FairValueByAssetClassAxis=bbsi_RestrictedMarketableSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByMeasurementBasisAxis=bbsi_LongTermAvailableForSaleMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: