XML 108 R87.htm IDEA: XBRL DOCUMENT
v3.22.0.1

Loans Receivable and Allowance for Credit Losses (Additions to TDRs) (Details) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 USD ($) loan | Dec. 31, 2020 USD ($) loan | Dec. 31, 2019 USD ($) loan
Loans Modified as TDRs |  |  |
Number of Loans | loan | 6 | 17 |
Pre-Modification Outstanding Recorded Investment | $ 25,256 | $ 174,898 |
Post-Modification Outstanding Recorded Investment | 21,329 | 156,914 |
Financial Impact | $ 1,108 | $ 19,573 |
Non-PCI impaired loans |  |  |
Loans Modified as TDRs |  |  |
Number of Loans | loan |  |  | 13
Pre-Modification Outstanding Recorded Investment |  |  | $ 117,100
Post-Modification Outstanding Recorded Investment |  |  | 92,649
Financial Impact |  |  | $ 8,006
Commercial Lending |  |  |
Loans Modified as TDRs |  |  |
Number of Loans | loan | 6 | 17 |
Pre-Modification Outstanding Recorded Investment | $ 25,256 | $ 174,898 |
Post-Modification Outstanding Recorded Investment | 21,329 | 156,914 |
Financial Impact | $ 1,108 | $ 19,573 |
Commercial Lending | Non-PCI impaired loans |  |  |
Loans Modified as TDRs |  |  |
Number of Loans | loan |  |  | 9
Pre-Modification Outstanding Recorded Investment |  |  | $ 115,438
Post-Modification Outstanding Recorded Investment |  |  | 91,023
Financial Impact |  |  | $ 8,004
Commercial Lending | C&I |  |  |
Loans Modified as TDRs |  |  |
Number of Loans | loan | 5 | 14 |
Pre-Modification Outstanding Recorded Investment | $ 24,155 | $ 152,249 |
Post-Modification Outstanding Recorded Investment | 20,263 | 134,467 |
Financial Impact | 1,108 | $ 19,555 |
Commercial Lending | C&I | Non-PCI impaired loans |  |  |
Loans Modified as TDRs |  |  |
Number of Loans | loan |  |  | 8
Pre-Modification Outstanding Recorded Investment |  |  | $ 95,742
Post-Modification Outstanding Recorded Investment |  |  | 71,332
Financial Impact |  |  | $ 8,004
Commercial Lending | CRE |  |  |
Loans Modified as TDRs |  |  |
Number of Loans | loan |  | 2 |
Pre-Modification Outstanding Recorded Investment |  | $ 21,429 |
Post-Modification Outstanding Recorded Investment | $ 0 | 21,221 |
Financial Impact |  | $ 18 |
Commercial Lending | Residential loan | Multifamily |  |  |
Loans Modified as TDRs |  |  |
Number of Loans | loan | 1 | 1 |
Pre-Modification Outstanding Recorded Investment | $ 1,101 | $ 1,220 |
Post-Modification Outstanding Recorded Investment | 1,066 | 1,226 |
Financial Impact | $ 0 | $ 0 |
Commercial Lending | Construction and land | Non-PCI impaired loans |  |  |
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 | 3 |
Pre-Modification Outstanding Recorded Investment | $ 1,101 | $ 22,649 |
Post-Modification Outstanding Recorded Investment | 1,066 | 22,447 |
Financial Impact | $ 0 | $ 18 |
Commercial Lending | Total CRE | Non-PCI impaired loans |  |  |
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
Consumer Lending | Non-PCI impaired loans |  |  |
Loans Modified as TDRs |  |  |
Number of Loans | loan |  |  | 4
Pre-Modification Outstanding Recorded Investment |  |  | $ 1,662
Post-Modification Outstanding Recorded Investment |  |  | 1,626
Financial Impact |  |  | $ 2
Consumer Lending | Residential loan | Single-family | Non-PCI impaired loans |  |  |
Loans Modified as TDRs |  |  |
Number of Loans | loan |  |  | 2
Pre-Modification Outstanding Recorded Investment |  |  | $ 1,123
Post-Modification Outstanding Recorded Investment |  |  | 1,098
Financial Impact |  |  | $ 2
Consumer Lending | HELOCs | Non-PCI impaired loans |  |  |
Loans Modified as TDRs |  |  |
Number of Loans | loan |  |  | 2
Pre-Modification Outstanding Recorded Investment |  |  | $ 539
Post-Modification Outstanding Recorded Investment |  |  | 528
Financial Impact |  |  | $ 0
Consumer Lending | Total residential mortgage | Non-PCI impaired loans |  |  |
Loans Modified as TDRs |  |  |
Number of Loans | loan |  |  | 4
Pre-Modification Outstanding Recorded Investment |  |  | $ 1,662
Post-Modification Outstanding Recorded Investment |  |  | 1,626
Financial Impact |  |  | $ 2

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=123577603&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=123577603&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=123577603&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=121585226&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: |