XML 90 R70.htm IDEA: XBRL DOCUMENT
v3.20.2

Loans Receivable and Allowance for Credit Losses (Amortized Cost of Loans on Nonaccrual Status) (Details) $ in Thousands | Sep. 30, 2020 USD ($)
--- | ---
Financing Receivable, Nonaccrual [Line Items] |
Total nonaccrual loans with no related allowance for loan losses | $ 169,528
Commercial lending |
Financing Receivable, Nonaccrual [Line Items] |
Total nonaccrual loans with no related allowance for loan losses | 152,684
Commercial lending | Commercial and industrial (“C&I”) |
Financing Receivable, Nonaccrual [Line Items] |
Total nonaccrual loans with no related allowance for loan losses | 95,475
Commercial lending | Commercial real estate (“CRE”) |
Financing Receivable, Nonaccrual [Line Items] |
Total nonaccrual loans with no related allowance for loan losses | 54,659
Commercial lending | Total CRE |
Financing Receivable, Nonaccrual [Line Items] |
Total nonaccrual loans with no related allowance for loan losses | 57,209
Consumer lending |
Financing Receivable, Nonaccrual [Line Items] |
Total nonaccrual loans with no related allowance for loan losses | 16,844
Consumer lending | HELOCs |
Financing Receivable, Nonaccrual [Line Items] |
Total nonaccrual loans with no related allowance for loan losses | 8,339
Consumer lending | Total residential mortgage |
Financing Receivable, Nonaccrual [Line Items] |
Total nonaccrual loans with no related allowance for loan losses | 14,353
Consumer lending | Other consumer |
Financing Receivable, Nonaccrual [Line Items] |
Total nonaccrual loans with no related allowance for loan losses | 2,491
Single-family residential | Consumer lending | Real estate loan |
Financing Receivable, Nonaccrual [Line Items] |
Total nonaccrual loans with no related allowance for loan losses | 6,014
Multifamily residential | Commercial lending | Real estate loan |
Financing Receivable, Nonaccrual [Line Items] |
Total nonaccrual loans with no related allowance for loan losses | $ 2,550

X
- Definition Amount of financing receivable on nonaccrual status with no allowance for credit loss. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 16 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=121599337&loc=SL82919258-210447 + Details
Name: | us-gaap_FinancingReceivableNonaccrualNoAllowance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

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=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: | 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: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=ewbc_OtherConsumerMember
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_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: |