XML 137 R117.htm IDEA: XBRL DOCUMENT
v3.2.0.727

OFF-BALANCE SHEET COMMITMENTS - Additional Information (Detail) - 6 months ended Jun. 30, 2015 - USD ($) $ in Millions | Total
--- | ---
Other Commitments [Line Items] |
Commitments to make loans period, maximum | 30 days
Commitments to sell loans under residential mortgage division | $ 686.2
Jumbo mortgage loan commitments |
Other Commitments [Line Items] |
Commitments to sell loans under residential mortgage division | 54.5
TBAs commitments |
Other Commitments [Line Items] |
Commitments to sell loans under residential mortgage division | 562.0
Best efforts commitments |
Other Commitments [Line Items] |
Commitments to sell loans under residential mortgage division | 69.7
Other Commitments |
Other Commitments [Line Items] |
Commitments to sell loans under residential mortgage division | 0.0
Interest rate lock commitments |
Other Commitments [Line Items] |
Commitments to sell loans under residential mortgage division | $ 338.5

X
- Definition Other Commitments, Origination of Loans, Period + References No definition available. + Details
Name: | banc_OtherCommitmentsOriginationofLoansPeriod
Namespace Prefix: | banc_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Reflects the carrying amount of loans and leases for which agreements to acquire or dispose exist. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 825 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6480020&loc=d3e61044-112788 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 825 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6480020&loc=d3e61082-112788 + Details
Name: | us-gaap_LoansAndLeasesReceivableCommitmentsToPurchaseOrSell
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=banc_JumboMortgageLoanSaleCommitmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=banc_ToBeAnnouncedCommitmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=banc_BestEffortsCommitmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=banc_OtherCommitmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_InterestRateLockCommitmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |