XML 48 R32.htm IDEA: XBRL DOCUMENT
v3.19.2

Workers' Compensation Claims - Additional Information (Detail) - USD ($) |  | 6 Months Ended | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Jul. 01, 2018 | Jun. 30, 2019 | Dec. 31, 2018 | Mar. 31, 2019 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Worker's compensation risk claim maximum | $ 5,000,000 | $ 5,000,000 |  |  |  |  |
Surety bonds | 30,000,000 |  |  |  |  |  |
Balance in Chubb trust accounts |  | 407,700,000 | $ 451,000,000 |  |  |  |
Specified investment balances or other financial instruments |  | 73,200,000 | 85,200,000 |  |  |  |
Surety bonds and standby letters of credit |  | 73,200,000 |  |  |  |  |
Estimated future liability for unsettled workers' compensation |  | 430,736,000 | 413,397,000 | $ 422,872,000 | $ 390,814,000 | $ 378,874,000 | $ 363,517,000
Reserves incurred in excess of retention limits |  | 3,200,000 | 3,200,000 |  |  |  |
Other Assets [Member] |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Accrual for costs incurred in excess of retention limits offset by a receivable |  | 3,200,000 | $ 3,200,000 |  |  |  |
Wells Fargo Bank, National Association [Member] |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Letter of credit | $ 63,700,000 |  |  |  |  |  |
Chubb Limited [Member] |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Worker's compensation risk claim maximum |  | 5,000,000 |  |  |  |  |
Maryland [Member] | AICE [Member] |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Reinsurance coverage |  | 1,000,000 |  |  |  |  |
Colorado [Member] | AICE [Member] |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Reinsurance coverage |  | $ 2,000,000 |  |  |  |  |
Colorado [Member] | Chubb Limited [Member] |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Excess workers' compensation insurance coverage with American Insurance Company |  | statutory limits |  |  |  |  |
California [Member] |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Surety bonds and standby letters of credit |  | $ 55,600,000 |  |  |  |  |
Maximum [Member] | AICE [Member] |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Reinsurance coverage |  | 5,000,000 |  |  |  |  |
Minimum [Member] | Chubb Limited [Member] |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Excess workers' compensation insurance coverage with Chubb |  | 5,000,000 |  |  |  |  |
Minimum [Member] | Maryland [Member] | Chubb Limited [Member] |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Excess workers' compensation insurance coverage with Chubb |  | 1,000,000 |  |  |  |  |
Minimum [Member] | Colorado [Member] | Chubb Limited [Member] |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Excess workers' compensation insurance coverage with Chubb |  | $ 2,000,000 |  |  |  |  |

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 Insurance deposit as security for future payment obligations under workers compensation program. + References No definition available. + Details
Name: | bbsi_InsuranceDepositAsSecurityForFuturePaymentObligationsUnderWorkersCompensationProgram
Namespace Prefix: | bbsi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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 Specified investment balances. + References No definition available. + Details
Name: | bbsi_SpecifiedInvestmentBalances
Namespace Prefix: | bbsi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Standby letters of credit and a surety bond. + References No definition available. + Details
Name: | bbsi_StandbyLettersOfCreditAndSuretyBond
Namespace Prefix: | bbsi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Surety bonds. + References No definition available. + Details
Name: | bbsi_SuretyBonds
Namespace Prefix: | bbsi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Workers compensation accrual for costs incurred in excess of retention limits offset by receivable. + References No definition available. + Details
Name: | bbsi_WorkersCompensationAccrualForCostsIncurredInExcessOfRetentionLimitsOffsetByReceivable
Namespace Prefix: | bbsi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Workers compensation claims incurred in excess of retention limits. + References No definition available. + Details
Name: | bbsi_WorkersCompensationClaimsIncurredInExcessOfRetentionLimits
Namespace Prefix: | bbsi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Workers compensation claims maximum coverage per occurrence. + References No definition available. + Details
Name: | bbsi_WorkersCompensationClaimsMaximumCoveragePerOccurrence
Namespace Prefix: | bbsi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Carrying value as of the balance sheet date of obligations and payables pertaining to claims incurred of a workers compensation nature. + References Reference 1: 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(15)(5)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: 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)(15)(a)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: 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(20)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: 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(24)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_WorkersCompensationLiabilityCurrentAndNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

X
- Details
Name: | us-gaap_LineOfCreditFacilityAxis=bbsi_WellsFargoBankNationalAssociationMember
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_MD
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_StatementGeographicalAxis=stpr_CO
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: | srt_RangeAxis=srt_MaximumMember
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: |