XML 97 R78.htm IDEA: XBRL DOCUMENT
v3.19.2

Loans Receivable and Allowance for Credit Losses (Additions to Non-PCI TDRs) (Details) - Non-PCI Loans $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 USD ($) loan | Jun. 30, 2018 USD ($) loan | Jun. 30, 2019 USD ($) loan | Jun. 30, 2018 USD ($) loan
Loans Modified as TDRs |  |  |  |
Post- Modification Outstanding Recorded Investment | $ 48,273 | $ 2,777 | $ 77,705 | $ 2,777
Commercial lending |  |  |  |
Loans Modified as TDRs |  |  |  |
Post- Modification Outstanding Recorded Investment | $ 48,054 | $ 837 | $ 77,486 | $ 837
Commercial lending | Commercial and industrial (“C&I”) |  |  |  |
Loans Modified as TDRs |  |  |  |
Number of Loans | loan | 6 | 0 | 9 | 0
Pre- Modification Outstanding Recorded Investment | $ 48,099 | $ 0 | $ 77,250 | $ 0
Post- Modification Outstanding Recorded Investment | 48,054 | 0 | 77,486 | 0
Financial Impact | $ 5,869 | $ 0 | $ 5,929 | $ 0
Commercial lending | Commercial real estate (“CRE”) |  |  |  |
Loans Modified as TDRs |  |  |  |
Number of Loans | loan | 0 | 1 | 0 | 1
Pre- Modification Outstanding Recorded Investment | $ 0 | $ 750 | $ 0 | $ 750
Post- Modification Outstanding Recorded Investment | 0 | 837 | 0 | 837
Financial Impact | 0 | 0 | 0 | 0
Consumer lending |  |  |  |
Loans Modified as TDRs |  |  |  |
Post- Modification Outstanding Recorded Investment | $ 219 | $ 1,940 | $ 219 | $ 1,940
Consumer lending | Real estate loan | Single-family residential |  |  |  |
Loans Modified as TDRs |  |  |  |
Number of Loans | loan | 1 | 2 | 1 | 2
Pre- Modification Outstanding Recorded Investment | $ 220 | $ 405 | $ 220 | $ 405
Post- Modification Outstanding Recorded Investment | 219 | 404 | 219 | 404
Financial Impact | $ 0 | $ (26) | $ 0 | $ (26)
Consumer lending | HELOCs |  |  |  |
Loans Modified as TDRs |  |  |  |
Number of Loans | loan | 0 | 2 | 0 | 2
Pre- Modification Outstanding Recorded Investment | $ 0 | $ 1,546 | $ 0 | $ 1,546
Post- Modification Outstanding Recorded Investment | 0 | 1,536 | 0 | 1,536
Financial Impact | $ 0 | $ 0 | $ 0 | $ 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_FinancingReceivablePortfolioSegmentAxis=us-gaap_ConsumerPortfolioSegmentMember
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_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: |