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v2.4.1.9

SUBSEQUENT EVENTS Subsequent Events (Details) (USD $) | 0 Months Ended | 3 Months Ended | 0 Months Ended
--- | --- | --- | ---
Apr. 08, 2015 | Mar. 31, 2015 | Apr. 06, 2015
Subsequent Event |  |  |
Subsequent Event [Line Items] |  |  |
Underwriters option period | 30 days |  |
Senior Notes |  |  |
Subsequent Event [Line Items] |  |  |
Minimum redemption period notice required |  | 30 days |
Maximum redemption period notice required |  | 60 days |
Redemption price, percentage |  | 100.00%us-gaap_DebtInstrumentRedemptionPricePercentage / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember |
Senior Notes | Five Point Two Five Percent Senior Notes Due April 15, 2025 | Subsequent Event |  |  |
Subsequent Event [Line Items] |  |  |
Aggregate principal amount issued |  |  | $ 175,000,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_DebtInstrumentAxis = banc_FivePointTwoFivePercentSeniorNotesDueApril152025Member / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember
Stated interest rate |  |  | 5.25%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = banc_FivePointTwoFivePercentSeniorNotesDueApril152025Member / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember
Proceeds from issuance of debt |  |  | 172,800,000 us-gaap_ProceedsFromIssuanceOfDebt / us-gaap_DebtInstrumentAxis = banc_FivePointTwoFivePercentSeniorNotesDueApril152025Member / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember
Minimum redemption period notice required |  |  | 30 days
Maximum redemption period notice required |  |  | 60 days
Redemption price, percentage |  |  | 10000.00%us-gaap_DebtInstrumentRedemptionPricePercentage / us-gaap_DebtInstrumentAxis = banc_FivePointTwoFivePercentSeniorNotesDueApril152025Member / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember
Underwritten Public Offering | Subsequent Event |  |  |
Subsequent Event [Line Items] |  |  |
Depository shares issued | 4,000,000 banc_DepositorySharesIssued / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember / us-gaap_SubsidiarySaleOfStockAxis = banc_UnderwrittenPublicOfferingMember |  |
Price per share of depository shares (in usd per share) | 25.00 banc_DepositorySharesIssuedPricePerShare / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember / us-gaap_SubsidiarySaleOfStockAxis = banc_UnderwrittenPublicOfferingMember |  |
Proceeds from issuance of depository shares | 96,900,000 banc_ProceedsfromIssuanceofDepositoryShares / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember / us-gaap_SubsidiarySaleOfStockAxis = banc_UnderwrittenPublicOfferingMember |  |
Over Allotment Option | Subsequent Event |  |  |
Subsequent Event [Line Items] |  |  |
Depository shares issued | 600,000 banc_DepositorySharesIssued / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember / us-gaap_SubsidiarySaleOfStockAxis = us-gaap_OverAllotmentOptionMember |  |
Proceeds from issuance of depository shares | 14,500,000 banc_ProceedsfromIssuanceofDepositoryShares / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember / us-gaap_SubsidiarySaleOfStockAxis = us-gaap_OverAllotmentOptionMember |  |
Series D Preferred Stock | Subsequent Event |  |  |
Subsequent Event [Line Items] |  |  |
Depository shares to preferred stock ratio | 2.50%banc_DepositorySharesToPreferredStockRatio / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesDPreferredStockMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember |  |
Series D Preferred Stock | Underwritten Public Offering | Subsequent Event |  |  |
Subsequent Event [Line Items] |  |  |
Depository shares to preferred stock ratio | 2.50%banc_DepositorySharesToPreferredStockRatio / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesDPreferredStockMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember / us-gaap_SubsidiarySaleOfStockAxis = banc_UnderwrittenPublicOfferingMember |  |
Non cumulative preferred stock, dividend rate | 7.375%us-gaap_PreferredStockDividendRatePercentage / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesDPreferredStockMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember / us-gaap_SubsidiarySaleOfStockAxis = banc_UnderwrittenPublicOfferingMember |  |
Liquidation preference value | 1,000 us-gaap_PreferredStockLiquidationPreferenceValue / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesDPreferredStockMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember / us-gaap_SubsidiarySaleOfStockAxis = banc_UnderwrittenPublicOfferingMember |  |

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