XML 85 R74.htm IDEA: XBRL DOCUMENT
v3.7.0.1

LOANS AND LEASES AND ALLOWANCE FOR LOAN AND LEASE LOSSES - Non Traditional Mortgages Portfolio (Detail) $ in Thousands | 6 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Jun. 30, 2017 USD ($) Loan | Dec. 31, 2016 USD ($) Loan | Jun. 30, 2016 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loans | $ 5,956,337 | $ 6,034,752 | $ 6,236,115
Non-Traditional Mortgages (NTM) |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loans | $ 773,037 | $ 885,148 |
Consumer | Non-Traditional Mortgages (NTM) |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Count | Loan | 557 | 663 |
Loans | $ 773,037 | $ 885,148 |
Consumer | Non-Traditional Mortgages (NTM) | Loan Portfolio Concentration Risk | Nontraditional Mortgage Loans Portfolio |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Concentration risk percentage | 100.00% | 100.00% |
Consumer | Non-Traditional Mortgages (NTM) | Loan Portfolio Concentration Risk | Loan Portfolio |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Concentration risk percentage | 13.00% | 14.70% |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loans | $ 86,000 | $ 91,000 |
Consumer | Non-Traditional Mortgages (NTM) | Interest Only Loans |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loans | 683,200 | 784,400 |
Consumer | Non-Traditional Mortgages (NTM) | Negative amortization |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loans | $ 3,800 | $ 9,800 |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans (HELOC) - first liens |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Count | Loan | 545 | 651 |
Loans | $ 769,495 | $ 881,589 |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans (HELOC) - first liens | Loan Portfolio Concentration Risk | Nontraditional Mortgage Loans Portfolio |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Concentration risk percentage | 99.50% | 99.60% |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans (HELOC) - first liens | Green Loans |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Count | Loan | 102 | 107 |
Loans | $ 82,497 | $ 87,469 |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans (HELOC) - first liens | Green Loans | Loan Portfolio Concentration Risk | Nontraditional Mortgage Loans Portfolio |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Concentration risk percentage | 10.70% | 9.90% |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans (HELOC) - first liens | Interest Only Loans |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Count | Loan | 432 | 522 |
Loans | $ 683,246 | $ 784,364 |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans (HELOC) - first liens | Interest Only Loans | Loan Portfolio Concentration Risk | Nontraditional Mortgage Loans Portfolio |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Concentration risk percentage | 88.30% | 88.60% |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans (HELOC) - first liens | Negative amortization |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Count | Loan | 11 | 22 |
Loans | $ 3,752 | $ 9,756 |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans (HELOC) - first liens | Negative amortization | Loan Portfolio Concentration Risk | Nontraditional Mortgage Loans Portfolio |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Concentration risk percentage | 0.50% | 1.10% |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans (HELOC) - second liens |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Count | Loan | 12 | 12 |
Loans | $ 3,542 | $ 3,559 |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans (HELOC) - second liens | Loan Portfolio Concentration Risk | Nontraditional Mortgage Loans Portfolio |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Concentration risk percentage | 0.50% | 0.40% |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans (HELOC) - second liens | Green Loans |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Count | Loan | 12 | 12 |
Loans | $ 3,542 | $ 3,559 |
Consumer | Non-Traditional Mortgages (NTM) | Green Loans (HELOC) - second liens | Green Loans | Loan Portfolio Concentration Risk | Nontraditional Mortgage Loans Portfolio |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Concentration risk percentage | 0.50% | 0.40% |

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_AccountsNotesAndLoansReceivableLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=84177426&loc=d3e6351-108592 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13531-108611 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=84177426&loc=d3e6404-108592 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13537-108611 + Details
Name: | us-gaap_ConcentrationRiskPercentage1
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=82891408&loc=d3e4428-111522 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5074-111524 + Details
Name: | us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Indicates the number of mortgages under each classification. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 948 -SubTopic 310 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-29.3) -URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 10 -Section S99 -Paragraph 6 -Subparagraph (SX 210.5-04.(c) Schedule IV) -URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674 + Details
Name: | us-gaap_MortgageLoansOnRealEstateNumberOfLoans
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=banc_LoansAndFinanceReceivablesNonTraditionalMortgagesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ConsumerPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConcentrationRiskByTypeAxis=banc_LoanPortfolioConcentrationRiskMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConcentrationRiskByBenchmarkAxis=banc_NontraditionalMortgageLoansPortfolioMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConcentrationRiskByBenchmarkAxis=banc_LoanPortfolioMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ProductOrServiceAxis=banc_GreenLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ProductOrServiceAxis=banc_InterestOnlyLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ProductOrServiceAxis=banc_NegativeAmortizationLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis=us-gaap_FirstMortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis=us-gaap_SecondMortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |