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LOANS AND LEASES AND ALLOWANCE FOR LOAN AND LEASE LOSSES - Risk Categories for Loans and Leases (Detail) (USD $) In Thousands, unless otherwise specified | Mar. 31, 2015 | Dec. 31, 2014 | Mar. 31, 2014
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Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | $ 3,933,715 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount | $ 3,949,122 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount | $ 2,396,995 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
Pass |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 3,566,394 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember | 3,581,683 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember |
Special Mention |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 42,586 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember | 33,612 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember |
Substandard |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 97,538 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember | 103,016 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember |
Doubtful |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 301 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember |
Not-Rated |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 226,896 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_InternalCreditAssessmentAxis = banc_NotRatedMember | 230,811 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_InternalCreditAssessmentAxis = banc_NotRatedMember |
Single family residential mortgage |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 1,049,176 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerSingleFamilyResidentialMortgageReceivableMember | 1,048,485 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerSingleFamilyResidentialMortgageReceivableMember |
Consumer Home Equity Loan | Green Loans (HELOC) - first liens |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 119,958 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerHomeEquityLoanMember / us-gaap_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis = us-gaap_FirstMortgageMember | 123,177 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerHomeEquityLoanMember / us-gaap_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis = us-gaap_FirstMortgageMember |
Consumer Home Equity Loan | Green Loans (HELOC) - second liens |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 4,748 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerHomeEquityLoanMember / us-gaap_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis = us-gaap_SecondMortgageMember | 4,979 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerHomeEquityLoanMember / us-gaap_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis = us-gaap_SecondMortgageMember |
Other consumer |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 166,470 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerOtherFinancingReceivableMember | 161,939 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerOtherFinancingReceivableMember |
Commercial and industrial |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 489,229 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialandIndustrialReceivableMember | 490,900 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialandIndustrialReceivableMember | 299,184 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialandIndustrialReceivableMember
Commercial real estate |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 975,734 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstateOtherReceivableMember | 999,857 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstateOtherReceivableMember | 560,581 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstateOtherReceivableMember
Multi-family |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 940,053 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialMultiFamilyReceivableMember | 955,683 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialMultiFamilyReceivableMember | 155,382 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialMultiFamilyReceivableMember
SBA |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 48,254 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialSmallBusinessAdministrationReceivableMember | 36,155 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialSmallBusinessAdministrationReceivableMember | 26,541 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialSmallBusinessAdministrationReceivableMember
Construction |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 38,081 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstateConstructionFinancingReceivableMember | 42,198 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstateConstructionFinancingReceivableMember | 25,144 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstateConstructionFinancingReceivableMember
Lease financing |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 102,012 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialLeaseFinancingReceivableMember | 85,749 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialLeaseFinancingReceivableMember | 48,537 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialLeaseFinancingReceivableMember
Purchased Credit Impaired |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 241,798 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember | 246,897 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember |
Purchased Credit Impaired | Pass |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 6,156 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember | 7,457 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember |
Purchased Credit Impaired | Special Mention |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 1,320 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember | 1,336 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember |
Purchased Credit Impaired | Substandard |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 7,426 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember | 7,293 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember |
Purchased Credit Impaired | Doubtful |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember |
Purchased Credit Impaired | Not-Rated |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 226,896 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_InternalCreditAssessmentAxis = banc_NotRatedMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember | 230,811 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_InternalCreditAssessmentAxis = banc_NotRatedMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember |
Purchased Credit Impaired | Single family residential mortgage |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 227,151 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerSingleFamilyResidentialMortgageReceivableMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember | 231,079 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerSingleFamilyResidentialMortgageReceivableMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember |
Purchased Credit Impaired | Single family residential mortgage | Pass |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerSingleFamilyResidentialMortgageReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerSingleFamilyResidentialMortgageReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember |
Purchased Credit Impaired | Single family residential mortgage | Special Mention |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerSingleFamilyResidentialMortgageReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerSingleFamilyResidentialMortgageReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember |
Purchased Credit Impaired | Single family residential mortgage | Substandard |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 255 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerSingleFamilyResidentialMortgageReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember | 268 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerSingleFamilyResidentialMortgageReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember |
Purchased Credit Impaired | Single family residential mortgage | Doubtful |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerSingleFamilyResidentialMortgageReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerSingleFamilyResidentialMortgageReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember |
Purchased Credit Impaired | Single family residential mortgage | Not-Rated |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 226,896 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerSingleFamilyResidentialMortgageReceivableMember / us-gaap_InternalCreditAssessmentAxis = banc_NotRatedMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember | 230,811 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerSingleFamilyResidentialMortgageReceivableMember / us-gaap_InternalCreditAssessmentAxis = banc_NotRatedMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember |
Purchased Credit Impaired | Consumer Home Equity Loan | Green Loans (HELOC) - first liens |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerHomeEquityLoanMember / us-gaap_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis = us-gaap_FirstMortgageMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerHomeEquityLoanMember / us-gaap_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis = us-gaap_FirstMortgageMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember |
Purchased Credit Impaired | Consumer Home Equity Loan | Green Loans (HELOC) - second liens |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerHomeEquityLoanMember / us-gaap_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis = us-gaap_SecondMortgageMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerHomeEquityLoanMember / us-gaap_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis = us-gaap_SecondMortgageMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember |
Purchased Credit Impaired | Other consumer |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerOtherFinancingReceivableMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerOtherFinancingReceivableMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember |
Purchased Credit Impaired | Commercial and industrial |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 1,079 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialandIndustrialReceivableMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember | 1,134 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialandIndustrialReceivableMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember |
Purchased Credit Impaired | Commercial and industrial | Pass |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 92 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialandIndustrialReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember | 104 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialandIndustrialReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember |
Purchased Credit Impaired | Commercial and industrial | Special Mention |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialandIndustrialReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialandIndustrialReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember |
Purchased Credit Impaired | Commercial and industrial | Substandard |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 987 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialandIndustrialReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember | 1,030 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialandIndustrialReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember |
Purchased Credit Impaired | Commercial and industrial | Doubtful |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialandIndustrialReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialandIndustrialReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember |
Purchased Credit Impaired | Commercial and industrial | Not-Rated |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialandIndustrialReceivableMember / us-gaap_InternalCreditAssessmentAxis = banc_NotRatedMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialandIndustrialReceivableMember / us-gaap_InternalCreditAssessmentAxis = banc_NotRatedMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember |
Purchased Credit Impaired | Commercial real estate |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 10,432 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstateOtherReceivableMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember | 11,527 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstateOtherReceivableMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember |
Purchased Credit Impaired | Commercial real estate | Pass |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 5,700 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstateOtherReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember | 6,676 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstateOtherReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember |
Purchased Credit Impaired | Commercial real estate | Special Mention |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 974 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstateOtherReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember | 985 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstateOtherReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember |
Purchased Credit Impaired | Commercial real estate | Substandard |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 3,758 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstateOtherReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember | 3,866 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstateOtherReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember |
Purchased Credit Impaired | Commercial real estate | Doubtful |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstateOtherReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstateOtherReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember |
Purchased Credit Impaired | Commercial real estate | Not-Rated |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstateOtherReceivableMember / us-gaap_InternalCreditAssessmentAxis = banc_NotRatedMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstateOtherReceivableMember / us-gaap_InternalCreditAssessmentAxis = banc_NotRatedMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember |
Purchased Credit Impaired | Multi-family |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialMultiFamilyReceivableMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialMultiFamilyReceivableMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember |
Purchased Credit Impaired | SBA |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 3,136 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialSmallBusinessAdministrationReceivableMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember | 3,157 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialSmallBusinessAdministrationReceivableMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember |
Purchased Credit Impaired | SBA | Pass |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 364 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialSmallBusinessAdministrationReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember | 677 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialSmallBusinessAdministrationReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember |
Purchased Credit Impaired | SBA | Special Mention |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 346 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialSmallBusinessAdministrationReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember | 351 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialSmallBusinessAdministrationReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember |
Purchased Credit Impaired | SBA | Substandard |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 2,426 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialSmallBusinessAdministrationReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember | 2,129 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialSmallBusinessAdministrationReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember |
Purchased Credit Impaired | SBA | Doubtful |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialSmallBusinessAdministrationReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialSmallBusinessAdministrationReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember |
Purchased Credit Impaired | SBA | Not-Rated |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialSmallBusinessAdministrationReceivableMember / us-gaap_InternalCreditAssessmentAxis = banc_NotRatedMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialSmallBusinessAdministrationReceivableMember / us-gaap_InternalCreditAssessmentAxis = banc_NotRatedMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember |
Purchased Credit Impaired | Construction |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstateConstructionFinancingReceivableMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstateConstructionFinancingReceivableMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember |
Purchased Credit Impaired | Lease financing |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialLeaseFinancingReceivableMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialLeaseFinancingReceivableMember / banc_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = banc_ReceivablesAcquiredwithDeterioratedCreditQualityMember |
Non-Traditional Mortgages (NTM) |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 353,825 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember | 350,575 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember |
Non-Traditional Mortgages (NTM) | Pass |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 329,972 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember | 329,270 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember |
Non-Traditional Mortgages (NTM) | Special Mention |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 5,097 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember | 678 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember |
Non-Traditional Mortgages (NTM) | Substandard |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 18,455 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember | 20,627 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember |
Non-Traditional Mortgages (NTM) | Doubtful |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 301 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember |
Non-Traditional Mortgages (NTM) | Not-Rated |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_InternalCreditAssessmentAxis = banc_NotRatedMember | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_InternalCreditAssessmentAxis = banc_NotRatedMember |
Non-Traditional Mortgages (NTM) | Green Loans (HELOC) - first liens |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 348,964 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis = us-gaap_FirstMortgageMember | 345,483 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis = us-gaap_FirstMortgageMember |
Non-Traditional Mortgages (NTM) | Green Loans (HELOC) - second liens |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 4,861 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis = us-gaap_SecondMortgageMember | 5,092 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis = us-gaap_SecondMortgageMember |
Non-Traditional Mortgages (NTM) | Single family residential mortgage |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 229,006 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerSingleFamilyResidentialMortgageReceivableMember | 222,306 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerSingleFamilyResidentialMortgageReceivableMember |
Non-Traditional Mortgages (NTM) | Single family residential mortgage | Pass |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 224,683 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerSingleFamilyResidentialMortgageReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember | 219,747 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerSingleFamilyResidentialMortgageReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember |
Non-Traditional Mortgages (NTM) | Single family residential mortgage | Special Mention |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 2,041 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerSingleFamilyResidentialMortgageReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember | 279 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerSingleFamilyResidentialMortgageReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember |
Non-Traditional Mortgages (NTM) | Single family residential mortgage | Substandard |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 2,282 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerSingleFamilyResidentialMortgageReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember | 2,280 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerSingleFamilyResidentialMortgageReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember |
Non-Traditional Mortgages (NTM) | Single family residential mortgage | Doubtful |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerSingleFamilyResidentialMortgageReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerSingleFamilyResidentialMortgageReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember |
Non-Traditional Mortgages (NTM) | Single family residential mortgage | Not-Rated |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerSingleFamilyResidentialMortgageReceivableMember / us-gaap_InternalCreditAssessmentAxis = banc_NotRatedMember | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerSingleFamilyResidentialMortgageReceivableMember / us-gaap_InternalCreditAssessmentAxis = banc_NotRatedMember |
Non-Traditional Mortgages (NTM) | Consumer Home Equity Loan | Green Loans (HELOC) - first liens |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 119,958 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerHomeEquityLoanMember / us-gaap_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis = us-gaap_FirstMortgageMember | 123,177 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerHomeEquityLoanMember / us-gaap_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis = us-gaap_FirstMortgageMember |
Non-Traditional Mortgages (NTM) | Consumer Home Equity Loan | Green Loans (HELOC) - first liens | Pass |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 100,428 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerHomeEquityLoanMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember / us-gaap_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis = us-gaap_FirstMortgageMember | 104,640 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerHomeEquityLoanMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember / us-gaap_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis = us-gaap_FirstMortgageMember |
Non-Traditional Mortgages (NTM) | Consumer Home Equity Loan | Green Loans (HELOC) - first liens | Special Mention |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 3,056 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerHomeEquityLoanMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember / us-gaap_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis = us-gaap_FirstMortgageMember | 399 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerHomeEquityLoanMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember / us-gaap_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis = us-gaap_FirstMortgageMember |
Non-Traditional Mortgages (NTM) | Consumer Home Equity Loan | Green Loans (HELOC) - first liens | Substandard |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 16,173 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerHomeEquityLoanMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember / us-gaap_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis = us-gaap_FirstMortgageMember | 18,138 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerHomeEquityLoanMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember / us-gaap_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis = us-gaap_FirstMortgageMember |
Non-Traditional Mortgages (NTM) | Consumer Home Equity Loan | Green Loans (HELOC) - first liens | Doubtful |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 301 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerHomeEquityLoanMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember / us-gaap_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis = us-gaap_FirstMortgageMember | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerHomeEquityLoanMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember / us-gaap_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis = us-gaap_FirstMortgageMember |
Non-Traditional Mortgages (NTM) | Consumer Home Equity Loan | Green Loans (HELOC) - first liens | Not-Rated |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerHomeEquityLoanMember / us-gaap_InternalCreditAssessmentAxis = banc_NotRatedMember / us-gaap_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis = us-gaap_FirstMortgageMember | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerHomeEquityLoanMember / us-gaap_InternalCreditAssessmentAxis = banc_NotRatedMember / us-gaap_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis = us-gaap_FirstMortgageMember |
Non-Traditional Mortgages (NTM) | Consumer Home Equity Loan | Green Loans (HELOC) - second liens |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 4,748 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerHomeEquityLoanMember / us-gaap_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis = us-gaap_SecondMortgageMember | 4,979 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerHomeEquityLoanMember / us-gaap_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis = us-gaap_SecondMortgageMember |
Non-Traditional Mortgages (NTM) | Consumer Home Equity Loan | Green Loans (HELOC) - second liens | Pass |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 4,748 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerHomeEquityLoanMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember / us-gaap_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis = us-gaap_SecondMortgageMember | 4,770 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerHomeEquityLoanMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember / us-gaap_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis = us-gaap_SecondMortgageMember |
Non-Traditional Mortgages (NTM) | Consumer Home Equity Loan | Green Loans (HELOC) - second liens | Special Mention |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerHomeEquityLoanMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember / us-gaap_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis = us-gaap_SecondMortgageMember | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerHomeEquityLoanMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember / us-gaap_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis = us-gaap_SecondMortgageMember |
Non-Traditional Mortgages (NTM) | Consumer Home Equity Loan | Green Loans (HELOC) - second liens | Substandard |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerHomeEquityLoanMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember / us-gaap_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis = us-gaap_SecondMortgageMember | 209 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerHomeEquityLoanMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember / us-gaap_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis = us-gaap_SecondMortgageMember |
Non-Traditional Mortgages (NTM) | Consumer Home Equity Loan | Green Loans (HELOC) - second liens | Doubtful |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerHomeEquityLoanMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember / us-gaap_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis = us-gaap_SecondMortgageMember | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerHomeEquityLoanMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember / us-gaap_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis = us-gaap_SecondMortgageMember |
Non-Traditional Mortgages (NTM) | Consumer Home Equity Loan | Green Loans (HELOC) - second liens | Not-Rated |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerHomeEquityLoanMember / us-gaap_InternalCreditAssessmentAxis = banc_NotRatedMember / us-gaap_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis = us-gaap_SecondMortgageMember | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerHomeEquityLoanMember / us-gaap_InternalCreditAssessmentAxis = banc_NotRatedMember / us-gaap_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis = us-gaap_SecondMortgageMember |
Non-Traditional Mortgages (NTM) | Other consumer |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 113 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerOtherFinancingReceivableMember | 113 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerOtherFinancingReceivableMember |
Non-Traditional Mortgages (NTM) | Other consumer | Pass |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 113 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerOtherFinancingReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember | 113 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerOtherFinancingReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember |
Non-Traditional Mortgages (NTM) | Other consumer | Special Mention |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerOtherFinancingReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerOtherFinancingReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember |
Non-Traditional Mortgages (NTM) | Other consumer | Substandard |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerOtherFinancingReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerOtherFinancingReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember |
Non-Traditional Mortgages (NTM) | Other consumer | Doubtful |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerOtherFinancingReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerOtherFinancingReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember |
Non-Traditional Mortgages (NTM) | Other consumer | Not-Rated |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerOtherFinancingReceivableMember / us-gaap_InternalCreditAssessmentAxis = banc_NotRatedMember | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerOtherFinancingReceivableMember / us-gaap_InternalCreditAssessmentAxis = banc_NotRatedMember |
Non-Traditional Mortgages (NTM) | Commercial and industrial |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialandIndustrialReceivableMember | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialandIndustrialReceivableMember |
Non-Traditional Mortgages (NTM) | Commercial real estate |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstateOtherReceivableMember | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstateOtherReceivableMember |
Non-Traditional Mortgages (NTM) | Multi-family |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialMultiFamilyReceivableMember | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialMultiFamilyReceivableMember |
Non-Traditional Mortgages (NTM) | SBA |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialSmallBusinessAdministrationReceivableMember | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialSmallBusinessAdministrationReceivableMember |
Non-Traditional Mortgages (NTM) | Construction |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstateConstructionFinancingReceivableMember | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstateConstructionFinancingReceivableMember |
Non-Traditional Mortgages (NTM) | Lease financing |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialLeaseFinancingReceivableMember | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_NonTraditionalMortgagesLoanMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialLeaseFinancingReceivableMember |
Traditional Loans |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 3,338,092 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember | 3,351,650 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember |
Traditional Loans | Pass |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 3,230,266 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember | 3,244,956 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember |
Traditional Loans | Special Mention |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 36,169 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember | 31,598 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember |
Traditional Loans | Substandard |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 71,657 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember | 75,096 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember |
Traditional Loans | Doubtful |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember |
Traditional Loans | Not-Rated |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_InternalCreditAssessmentAxis = banc_NotRatedMember | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_InternalCreditAssessmentAxis = banc_NotRatedMember |
Traditional Loans | Single family residential mortgage |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 593,019 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerSingleFamilyResidentialMortgageReceivableMember | 595,100 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerSingleFamilyResidentialMortgageReceivableMember |
Traditional Loans | Single family residential mortgage | Pass |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 557,947 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerSingleFamilyResidentialMortgageReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember | 569,871 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerSingleFamilyResidentialMortgageReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember |
Traditional Loans | Single family residential mortgage | Special Mention |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 15,848 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerSingleFamilyResidentialMortgageReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember | 10,395 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerSingleFamilyResidentialMortgageReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember |
Traditional Loans | Single family residential mortgage | Substandard |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 19,224 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerSingleFamilyResidentialMortgageReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember | 14,834 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerSingleFamilyResidentialMortgageReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember |
Traditional Loans | Single family residential mortgage | Doubtful |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerSingleFamilyResidentialMortgageReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerSingleFamilyResidentialMortgageReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember |
Traditional Loans | Single family residential mortgage | Not-Rated |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerSingleFamilyResidentialMortgageReceivableMember / us-gaap_InternalCreditAssessmentAxis = banc_NotRatedMember | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerSingleFamilyResidentialMortgageReceivableMember / us-gaap_InternalCreditAssessmentAxis = banc_NotRatedMember |
Traditional Loans | Consumer Home Equity Loan | Green Loans (HELOC) - first liens |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerHomeEquityLoanMember / us-gaap_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis = us-gaap_FirstMortgageMember | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerHomeEquityLoanMember / us-gaap_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis = us-gaap_FirstMortgageMember |
Traditional Loans | Consumer Home Equity Loan | Green Loans (HELOC) - second liens |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerHomeEquityLoanMember / us-gaap_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis = us-gaap_SecondMortgageMember | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_ConsumerHomeEquityLoanMember / us-gaap_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis = us-gaap_SecondMortgageMember |
Traditional Loans | Other consumer |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 166,357 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerOtherFinancingReceivableMember | 161,826 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerOtherFinancingReceivableMember |
Traditional Loans | Other consumer | Pass |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 166,243 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerOtherFinancingReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember | 161,701 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerOtherFinancingReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember |
Traditional Loans | Other consumer | Special Mention |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 78 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerOtherFinancingReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember | 85 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerOtherFinancingReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember |
Traditional Loans | Other consumer | Substandard |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 36 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerOtherFinancingReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember | 40 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerOtherFinancingReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember |
Traditional Loans | Other consumer | Doubtful |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerOtherFinancingReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerOtherFinancingReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember |
Traditional Loans | Other consumer | Not-Rated |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerOtherFinancingReceivableMember / us-gaap_InternalCreditAssessmentAxis = banc_NotRatedMember | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerOtherFinancingReceivableMember / us-gaap_InternalCreditAssessmentAxis = banc_NotRatedMember |
Traditional Loans | Commercial and industrial |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 488,150 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialandIndustrialReceivableMember | 489,766 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialandIndustrialReceivableMember |
Traditional Loans | Commercial and industrial | Pass |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 476,344 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialandIndustrialReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember | 477,319 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialandIndustrialReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember |
Traditional Loans | Commercial and industrial | Special Mention |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 106 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialandIndustrialReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember | 117 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialandIndustrialReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember |
Traditional Loans | Commercial and industrial | Substandard |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 11,700 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialandIndustrialReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember | 12,330 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialandIndustrialReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember |
Traditional Loans | Commercial and industrial | Doubtful |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialandIndustrialReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialandIndustrialReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember |
Traditional Loans | Commercial and industrial | Not-Rated |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialandIndustrialReceivableMember / us-gaap_InternalCreditAssessmentAxis = banc_NotRatedMember | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialandIndustrialReceivableMember / us-gaap_InternalCreditAssessmentAxis = banc_NotRatedMember |
Traditional Loans | Commercial real estate |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 965,302 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstateOtherReceivableMember | 988,330 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstateOtherReceivableMember |
Traditional Loans | Commercial real estate | Pass |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 926,109 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstateOtherReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember | 943,645 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstateOtherReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember |
Traditional Loans | Commercial real estate | Special Mention |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 14,099 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstateOtherReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember | 14,281 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstateOtherReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember |
Traditional Loans | Commercial real estate | Substandard |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 25,094 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstateOtherReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember | 30,404 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstateOtherReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember |
Traditional Loans | Commercial real estate | Doubtful |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstateOtherReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstateOtherReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember |
Traditional Loans | Commercial real estate | Not-Rated |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstateOtherReceivableMember / us-gaap_InternalCreditAssessmentAxis = banc_NotRatedMember | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstateOtherReceivableMember / us-gaap_InternalCreditAssessmentAxis = banc_NotRatedMember |
Traditional Loans | Multi-family |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 940,053 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialMultiFamilyReceivableMember | 955,683 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialMultiFamilyReceivableMember |
Traditional Loans | Multi-family | Pass |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 919,956 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialMultiFamilyReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember | 932,438 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialMultiFamilyReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember |
Traditional Loans | Multi-family | Special Mention |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 5,974 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialMultiFamilyReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember | 6,684 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialMultiFamilyReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember |
Traditional Loans | Multi-family | Substandard |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 14,123 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialMultiFamilyReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember | 16,561 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialMultiFamilyReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember |
Traditional Loans | Multi-family | Doubtful |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialMultiFamilyReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialMultiFamilyReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember |
Traditional Loans | Multi-family | Not-Rated |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialMultiFamilyReceivableMember / us-gaap_InternalCreditAssessmentAxis = banc_NotRatedMember | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialMultiFamilyReceivableMember / us-gaap_InternalCreditAssessmentAxis = banc_NotRatedMember |
Traditional Loans | SBA |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 45,118 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialSmallBusinessAdministrationReceivableMember | 32,998 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialSmallBusinessAdministrationReceivableMember |
Traditional Loans | SBA | Pass |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 44,301 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialSmallBusinessAdministrationReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember | 32,171 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialSmallBusinessAdministrationReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember |
Traditional Loans | SBA | Special Mention |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialSmallBusinessAdministrationReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialSmallBusinessAdministrationReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember |
Traditional Loans | SBA | Substandard |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 817 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialSmallBusinessAdministrationReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember | 827 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialSmallBusinessAdministrationReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember |
Traditional Loans | SBA | Doubtful |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialSmallBusinessAdministrationReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialSmallBusinessAdministrationReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember |
Traditional Loans | SBA | Not-Rated |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialSmallBusinessAdministrationReceivableMember / us-gaap_InternalCreditAssessmentAxis = banc_NotRatedMember | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialSmallBusinessAdministrationReceivableMember / us-gaap_InternalCreditAssessmentAxis = banc_NotRatedMember |
Traditional Loans | Construction |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 38,081 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstateConstructionFinancingReceivableMember | 42,198 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstateConstructionFinancingReceivableMember |
Traditional Loans | Construction | Pass |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 38,081 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstateConstructionFinancingReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember | 42,198 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstateConstructionFinancingReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember |
Traditional Loans | Construction | Special Mention |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstateConstructionFinancingReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstateConstructionFinancingReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember |
Traditional Loans | Construction | Substandard |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstateConstructionFinancingReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstateConstructionFinancingReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember |
Traditional Loans | Construction | Doubtful |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstateConstructionFinancingReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstateConstructionFinancingReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember |
Traditional Loans | Construction | Not-Rated |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstateConstructionFinancingReceivableMember / us-gaap_InternalCreditAssessmentAxis = banc_NotRatedMember | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstateConstructionFinancingReceivableMember / us-gaap_InternalCreditAssessmentAxis = banc_NotRatedMember |
Traditional Loans | Lease financing |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 102,012 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialLeaseFinancingReceivableMember | 85,749 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialLeaseFinancingReceivableMember |
Traditional Loans | Lease financing | Pass |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 101,285 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialLeaseFinancingReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember | 85,613 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialLeaseFinancingReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember |
Traditional Loans | Lease financing | Special Mention |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 64 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialLeaseFinancingReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember | 36 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialLeaseFinancingReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember |
Traditional Loans | Lease financing | Substandard |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 663 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialLeaseFinancingReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember | 100 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialLeaseFinancingReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember |
Traditional Loans | Lease financing | Doubtful |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialLeaseFinancingReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember | 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialLeaseFinancingReceivableMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember |
Traditional Loans | Lease financing | Not-Rated |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Gross loans | $ 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialLeaseFinancingReceivableMember / us-gaap_InternalCreditAssessmentAxis = banc_NotRatedMember | $ 0 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / banc_FinancingReceivablePortfolioSegmentAxis = banc_TraditionalLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = banc_CommercialLeaseFinancingReceivableMember / us-gaap_InternalCreditAssessmentAxis = banc_NotRatedMember |

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