XML 47 R33.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Summary of Operations and Significant Accounting Policies - Additional Information (Detail) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2018 USD ($) Branch Segment Company | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($)
Basis Of Presentation Of Interim Period Statements [Line Items] |  |  |  |
Number Of Branch Offices | Branch | 62 |  |  |
Number of operating segment | Segment | 1 |  |  |
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 | $ 533,000 | $ 265,000 | $ 78,000 | $ 268,000
Number of reporting units | Segment | 1 |  |  |
Goodwill and intangible assets impairment | $ 0 |  |  |
Estimate of liability for unpaid safety incentives | 29,200,000 | 28,500,000 |  |
Income taxes paid (received) | 1,800,000 | 9,900,000 | 4,200,000 |
Restricted cash and restricted cash equivalents | 105,331,000 | $ 60,370,000 | $ 290,562,000 |
Other Accrued Liabilities [Member] |  |  |  |
Basis Of Presentation Of Interim Period Statements [Line Items] |  |  |  |
One-time customer Incentive | 9,800,000 |  |  |
Maximum [Member] | AICE [Member] |  |  |  |
Basis Of Presentation Of Interim Period Statements [Line Items] |  |  |  |
Reinsurance coverage | $ 5,000,000 |  |  |
Minimum [Member] |  |  |  |
Basis Of Presentation Of Interim Period Statements [Line Items] |  |  |  |
Likelihood of tax benefit being realized upon settlement | 50.00% |  |  |
Minimum [Member] | Chubb Limited [Member] |  |  |  |
Basis Of Presentation Of Interim Period Statements [Line Items] |  |  |  |
Excess workers' compensation insurance coverage with Chubb | $ 5,000,000 |  |  |
California [Member] | Revenue [Member] | Geographic Concentration Risk [Member] |  |  |  |
Basis Of Presentation Of Interim Period Statements [Line Items] |  |  |  |
Percentage of revenue attributable to geographic area | 79.00% | 79.00% | 78.00% |
Maryland [Member] | AICE [Member] |  |  |  |
Basis Of Presentation Of Interim Period Statements [Line Items] |  |  |  |
Reinsurance coverage | $ 1,000,000 |  |  |
Maryland [Member] | Minimum [Member] | Chubb Limited [Member] |  |  |  |
Basis Of Presentation Of Interim Period Statements [Line Items] |  |  |  |
Excess workers' compensation insurance coverage with Chubb | 1,000,000 |  |  |
Colorado [Member] | AICE [Member] |  |  |  |
Basis Of Presentation Of Interim Period Statements [Line Items] |  |  |  |
Reinsurance coverage | $ 2,000,000 |  |  |
Colorado [Member] | Chubb Limited [Member] |  |  |  |
Basis Of Presentation Of Interim Period Statements [Line Items] |  |  |  |
Excess workers' compensation insurance coverage with American Insurance Company | statutory limits |  |  |
Colorado [Member] | Minimum [Member] | Chubb Limited [Member] |  |  |  |
Basis Of Presentation Of Interim Period Statements [Line Items] |  |  |  |
Excess workers' compensation insurance coverage with Chubb | $ 2,000,000 |  |  |

X
- Definition Basis of Presentation of Interim Period Statements [Line Items] + References No definition available. + Details
Name: | bbsi_BasisOfPresentationOfInterimPeriodStatementsLineItems
Namespace Prefix: | bbsi_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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 Customer incentive liability. + References No definition available. + Details
Name: | bbsi_CustomerIncentiveLiability
Namespace Prefix: | bbsi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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 Excess workers' compensation insurance coverage. + References No definition available. + Details
Name: | bbsi_ExcessWorkersCompensationInsuranceCoverage
Namespace Prefix: | bbsi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Excess workers' compensation insurance coverage maximum limit. + References No definition available. + Details
Name: | bbsi_ExcessWorkersCompensationInsuranceCoverageMaximumLimit
Namespace Prefix: | bbsi_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Likelihood of tax benefit being realized upon settlement percent. + References No definition available. + Details
Name: | bbsi_LikelihoodOfTaxBenefitBeingRealizedUponSettlementPercent
Namespace Prefix: | bbsi_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of branch offices. + References No definition available. + Details
Name: | bbsi_NumberOfBranchOffices
Namespace Prefix: | bbsi_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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 Payments for proceeds from income taxes. + References No definition available. + Details
Name: | bbsi_PaymentsForProceedsFromIncomeTaxes
Namespace Prefix: | bbsi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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 Reinsurance coverage per occurrence. + References No definition available. + Details
Name: | bbsi_ReinsuranceCoveragePerOccurrence
Namespace Prefix: | bbsi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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 For an unclassified balance sheet, a valuation allowance for receivables due a company that are expected to be uncollectible. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5074-111524 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.4) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_AllowanceForDoubtfulAccountsReceivable
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6351-108592 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=109250915&loc=d3e13531-108611 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109250915&loc=d3e13537-108611 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592 + Details
Name: | us-gaap_ConcentrationRiskPercentage1
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Total loss recognized during the period from the impairment of goodwill plus the loss recognized in the period resulting from the impairment of the carrying amount of intangible assets, other than goodwill. + References No definition available. + Details
Name: | us-gaap_GoodwillAndIntangibleAssetImpairment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues. + References No definition available. + Details
Name: | us-gaap_NumberOfOperatingSegments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of reporting units tested for impairment of goodwill. A reporting unit is an operating segment or one level below an operating segment. + References No definition available. + Details
Name: | us-gaap_NumberOfReportingUnits
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of cash and cash equivalents restricted as to withdrawal or usage. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(2)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=98513485&loc=SL98516268-108586 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(1)(a)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3044-108585 + Details
Name: | us-gaap_RestrictedCashAndCashEquivalents
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=us-gaap_OtherCurrentLiabilitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=bbsi_AssociatedInsuranceCompanyExcessMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=bbsi_ChubbLimitedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=stpr_CA
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_SalesRevenueServicesNetMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConcentrationRiskByTypeAxis=us-gaap_GeographicConcentrationRiskMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=stpr_MD
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=stpr_CO
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |