XML 30 R21.htm IDEA: XBRL DOCUMENT
v3.23.3

Basis of Presentation of Interim Period Statements - Additional Information (Detail) |  | 9 Months Ended
--- | --- | ---
Dec. 31, 2022 USD ($) | Sep. 30, 2023 USD ($) Company | Sep. 30, 2022 USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |  |
Revenue recognition professional employer service contracts term |  | 1 year |
Professional employer service contract cancellation and termination period |  | 30 days |
Payment term for staffing customers |  | 30 days |
Number of wholly-owned insurance companies | Company |  | 2 |
Cash and cash equivalents, maturity term |  | 3 months |
Allowance for doubtful accounts | $ 893,000 | $ 885,000 |
Estimate of liability for unpaid safety incentives | 2,000,000.0 | 1,500,000 |
Income taxes paid |  | $ 13,000,000 | $ 12,200,000
Prior period reclassification adjustment | $ 18,900,000 |  | $ 10,000,000

X
- Definition Cash and cash equivalents maximum maturity period. + References No definition available. + Details
Name: | bbsi_CashAndCashEquivalentsMaximumMaturityPeriod
Namespace Prefix: | bbsi_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Estimate of liability for unpaid safety incentives. + References No definition available. + Details
Name: | bbsi_EstimateOfLiabilityForUnpaidSafetyIncentives
Namespace Prefix: | bbsi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Number of wholly owned insurance companies. + References No definition available. + Details
Name: | bbsi_NumberOfWhollyOwnedInsuranceCompanies
Namespace Prefix: | bbsi_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Payment term for staffing customers. + References No definition available. + Details
Name: | bbsi_PaymentTermForStaffingCustomers
Namespace Prefix: | bbsi_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Period for cancellation or termination of PEO service contract. + References No definition available. + Details
Name: | bbsi_PeriodForCancellationOrTerminationOfPeoServiceContract
Namespace Prefix: | bbsi_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Revenue recognition PEO service contract minimum term. + References No definition available. + Details
Name: | bbsi_RevenueRecognitionPeoServiceContractMinimumTerm
Namespace Prefix: | bbsi_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of allowance for credit loss on accounts receivable. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(5)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(4)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479344/326-20-45-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-4 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-13 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-13 + Details
Name: | us-gaap_AllowanceForDoubtfulAccountsReceivable
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482913/230-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-25 + Details
Name: | us-gaap_IncomeTaxesPaid
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of a reclassification adjustment made to prior period financial statement amounts. + References No definition available. + Details
Name: | us-gaap_PriorPeriodReclassificationAdjustment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration