XML 72 R94.htm IDEA: XBRL DOCUMENT
v3.19.3.a.u2

Loans Receivable and Allowance for Credit Losses (Additions to Non-PCI TDRs) (Details) - Non-PCI impaired loans $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 USD ($) loan | Dec. 31, 2018 USD ($) loan | Dec. 31, 2017 USD ($) loan
Loans Modified as TDRs |  |  |
Post-Modification Outstanding Recorded Investment | $ 92,649 | $ 12,081 | $ 43,651
Commercial Lending |  |  |
Loans Modified as TDRs |  |  |
Number of Loans | loan | 9 | 9 | 21
Pre-Modification Outstanding Recorded Investment | $ 115,438 | $ 12,116 | $ 50,214
Post-Modification Outstanding Recorded Investment | 91,023 | 10,272 | 43,496
Financial Impact | $ 8,004 | $ 699 | $ 11,677
Commercial Lending | C&I |  |  |
Loans Modified as TDRs |  |  |
Number of Loans | loan | 8 | 8 | 16
Pre-Modification Outstanding Recorded Investment | $ 95,742 | $ 11,366 | $ 43,884
Post-Modification Outstanding Recorded Investment | 71,332 | 9,520 | 37,900
Financial Impact | $ 8,004 | $ 699 | $ 11,520
Commercial Lending | CRE |  |  |
Loans Modified as TDRs |  |  |
Number of Loans | loan |  | 1 | 4
Pre-Modification Outstanding Recorded Investment |  | $ 750 | $ 2,675
Post-Modification Outstanding Recorded Investment |  | 752 | 2,627
Financial Impact |  | $ 0 | $ 157
Commercial Lending | Residential loan | Multifamily |  |  |
Loans Modified as TDRs |  |  |
Number of Loans | loan |  |  | 1
Pre-Modification Outstanding Recorded Investment |  |  | $ 3,655
Post-Modification Outstanding Recorded Investment |  |  | 2,969
Financial Impact |  |  | $ 0
Commercial Lending | Construction and land |  |  |
Loans Modified as TDRs |  |  |
Number of Loans | loan | 1 |  |
Pre-Modification Outstanding Recorded Investment | $ 19,696 |  |
Post-Modification Outstanding Recorded Investment | 19,691 |  |
Financial Impact | $ 0 |  |
Commercial Lending | Total CRE |  |  |
Loans Modified as TDRs |  |  |
Number of Loans | loan | 1 | 1 | 5
Pre-Modification Outstanding Recorded Investment | $ 19,696 | $ 750 | $ 6,330
Post-Modification Outstanding Recorded Investment | 19,691 | 752 | 5,596
Financial Impact | $ 0 | $ 0 | $ 157
Consumer Lending |  |  |
Loans Modified as TDRs |  |  |
Number of Loans | loan | 4 | 4 | 1
Pre-Modification Outstanding Recorded Investment | $ 1,662 | $ 1,951 | $ 152
Post-Modification Outstanding Recorded Investment | 1,626 | 1,809 | 155
Financial Impact | $ 2 | $ 28 | $ 0
Consumer Lending | Residential loan | Single-family |  |  |
Loans Modified as TDRs |  |  |
Number of Loans | loan | 2 | 2 |
Pre-Modification Outstanding Recorded Investment | $ 1,123 | $ 405 |
Post-Modification Outstanding Recorded Investment | 1,098 | 391 |
Financial Impact | $ 2 | $ 28 |
Consumer Lending | HELOCs |  |  |
Loans Modified as TDRs |  |  |
Number of Loans | loan | 2 | 2 | 1
Pre-Modification Outstanding Recorded Investment | $ 539 | $ 1,546 | $ 152
Post-Modification Outstanding Recorded Investment | 528 | 1,418 | 155
Financial Impact | $ 0 | $ 0 | $ 0
Consumer Lending | Total residential mortgage |  |  |
Loans Modified as TDRs |  |  |
Number of Loans | loan | 4 | 4 | 1
Pre-Modification Outstanding Recorded Investment | $ 1,662 | $ 1,951 | $ 152
Post-Modification Outstanding Recorded Investment | 1,626 | 1,809 | 155
Financial Impact | $ 2 | $ 28 | $ 0

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

X
- Definition Number of financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953676-111524 + Details
Name: | us-gaap_FinancingReceivableModificationsNumberOfContracts2
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount, after troubled debt restructuring, of modified financing receivable. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953676-111524 + Details
Name: | us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount, before troubled debt restructuring, of financing receivable to be modified. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953676-111524 + Details
Name: | us-gaap_FinancingReceivableModificationsPreModificationRecordedInvestment2
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Reflects the amount of the write-down related to a troubled debt restructuring. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=118939409&loc=d3e18845-111554 + Details
Name: | us-gaap_FinancingReceivablesImpairedTroubledDebtRestructuringWriteDown
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_CreditLossStatusAxis=ewbc_ReceivablesOriginatedOrAcquiredWithoutDeterioratedCreditQualityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=ewbc_CommercialAndIndustrialLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_CommercialRealEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_RealEstateLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=srt_MultifamilyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=ewbc_ConstructionAndLandLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=ewbc_TotalCommercialRealEstateMember
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: | srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=srt_SingleFamilyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_HomeEquityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=ewbc_TotalResidentialMortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |