XML 135 R112.htm IDEA: XBRL DOCUMENT
v3.25.0.1

Commitments and Contingencies - Schedule of Guarantees Outstanding (Details) - Loans Sold or Securitized With Recourse - Loans Sold or Securitized with Recourse - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Guarantor obligation, maximum potential future payment [Abstract] |  |
Expire in One Year or Less | $ 10 |
Expire After One Year Through Three Years | 0 |
Expire After Three Years Through Five Years | 185 |
Expire After Five Years | 19,176 |
Total | 19,371 | $ 20,884
Carrying value | 22,145 | 24,908
Single Family Residential |  |
Guarantor obligation, maximum potential future payment [Abstract] |  |
Expire in One Year or Less | 10 |
Expire After One Year Through Three Years | 0 |
Expire After Three Years Through Five Years | 40 |
Expire After Five Years | 4,325 |
Total | 4,375 | 5,888
Carrying value | 4,375 | 5,888
Multifamily residential |  |
Guarantor obligation, maximum potential future payment [Abstract] |  |
Expire in One Year or Less | 0 |
Expire After One Year Through Three Years | 0 |
Expire After Three Years Through Five Years | 145 |
Expire After Five Years | 14,851 |
Total | 14,996 | 14,996
Carrying value | $ 17,770 | $ 19,020

X
- Definition Guarantor Obligations, Maximum Exposure, Undiscounted, Expire After Year Five + References No definition available. + Details
Name: | ewbc_GuarantorObligationsMaximumExposureUndiscountedExpireAfterYearFive
Namespace Prefix: | ewbc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Guarantor Obligations, Maximum Exposure, Undiscounted, Expire in Next Twelve Months + References No definition available. + Details
Name: | ewbc_GuarantorObligationsMaximumExposureUndiscountedExpireInNextTwelveMonths
Namespace Prefix: | ewbc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Guarantor Obligations, Maximum Exposure, Undiscounted, Expire in Year Two Through Three + References No definition available. + Details
Name: | ewbc_GuarantorObligationsMaximumExposureUndiscountedExpireInYearTwoThroughThree
Namespace Prefix: | ewbc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Guarantor Obligations, Maximum Exposure, Undiscounted, Expire In Years Four Through Five + References No definition available. + Details
Name: | ewbc_GuarantorObligationsMaximumExposureUndiscountedExpireInYearsFourThroughFive
Namespace Prefix: | ewbc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Guarantor Obligations, Maximum Potential Future Payments + References No definition available. + Details
Name: | ewbc_GuarantorObligationsMaximumPotentialFuturePaymentsAbstract
Namespace Prefix: | ewbc_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The current carrying amount of the liability for the freestanding or embedded guarantor's obligations under the guarantee or each group of similar guarantees. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 460 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482425/460-10-50-4 + Details
Name: | us-gaap_GuaranteeObligationsCurrentCarryingValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 460 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (b)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482425/460-10-50-4 + Details
Name: | us-gaap_GuaranteeObligationsMaximumExposure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | ewbc_TypeofGuaranteesAxis=ewbc_LoansSoldorSecuritizedWithRecourseMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=us-gaap_GuaranteeObligationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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