XML 162 R151.htm IDEA: XBRL DOCUMENT
v3.8.0.1

RELATED-PARTY TRANSACTIONS - Transactions with The Palisades Group (Details) - USD ($) |  |  | 3 Months Ended | 4 Months Ended | 6 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | --- | --- | ---
Apr. 06, 2015 | Jul. 01, 2013 | Dec. 30, 2013 | May 05, 2016 | Jun. 27, 2014 | Sep. 30, 2017 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |
Expenses from transactions with related parties | $ 263,000 |  |  |  |  |  |  |  |
COR Securities Holding, Inc. (CORSHI) | Rent Payments Reimbursement |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |
Expenses from transactions with related parties |  |  | $ 40,000 |  |  |  |  |  |
COR Securities Holding, Inc. (CORSHI) | Security Deposit |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |
Expenses from transactions with related parties |  |  | $ 34,000 |  |  |  |  |  |
COR Securities Holding, Inc. (CORSHI) | Intercompany Transaction |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |
Expenses from transactions with related parties |  |  |  |  | $ 34,000 |  |  |  |
COR Securities Holding, Inc. (CORSHI) | Leasing Costs Payments |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |
Expenses from transactions with related parties |  |  |  |  | $ 58,000 |  |  |  |
Subsidiaries | Immediate Family Member of Chief Executive Officer, Brother | Consulting Agreement |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |
Consulting agreement term |  | 5 years |  |  |  |  |  |  |
Consulting agreement minimum payment |  | $ 30,000 |  |  |  |  |  |  |
Consulting agreement payment |  | $ 600,000 |  |  |  |  |  |  |
Expenses from transactions with related parties |  |  |  | $ 0 |  |  | $ 30,000 | $ 1,200,000 | $ 121,000
Written notice period for agreement termination |  |  |  |  |  | 30 days |  |  |

X
- Definition Consulting Agreement Term + References No definition available. + Details
Name: | banc_RelatedPartyTransactionAgreementTerm
Namespace Prefix: | banc_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Related Party Transaction, Minimum Aggregate Payment + References No definition available. + Details
Name: | banc_RelatedPartyTransactionMinimumAggregatePayment
Namespace Prefix: | banc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Related Party Transaction, Minimum Quarterly Payments + References No definition available. + Details
Name: | banc_RelatedPartyTransactionMinimumQuarterlyPayments
Namespace Prefix: | banc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Related Party Transaction, Written Notice for Termination Period + References No definition available. + Details
Name: | banc_RelatedPartyTransactionWrittenNoticeforTerminationPeriod
Namespace Prefix: | banc_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 + Details
Name: | us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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_RelatedPartyTransactionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=banc_AffiliatedEntitywithCommonChiefExecutiveOfficerMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionAxis=banc_RentPaymentsReimbursementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionAxis=banc_SecurityDepositMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionAxis=banc_IntercompanyTransactionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionAxis=banc_LeasingCostsPaymentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConsolidatedEntitiesAxis=us-gaap_SubsidiariesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=banc_ImmediateFamilyMemberofChiefExecutiveOfficerBrotherMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionAxis=banc_ConsultingAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |