000106915712/312022Q1false00010691572022-01-012022-03-3100010691572022-04-30xbrli:shares00010691572022-03-31iso4217:USD00010691572021-12-31iso4217:USDxbrli:shares00010691572021-01-012021-03-310001069157us-gaap:CommonStockMember2020-12-310001069157us-gaap:CommonStockIncludingAdditionalPaidInCapitalMember2020-12-310001069157us-gaap:RetainedEarningsMember2020-12-310001069157us-gaap:TreasuryStockMember2020-12-310001069157us-gaap:AccumulatedOtherComprehensiveIncomeMember2020-12-3100010691572020-12-310001069157us-gaap:RetainedEarningsMember2021-01-012021-03-310001069157us-gaap:AccumulatedOtherComprehensiveIncomeMember2021-01-012021-03-310001069157us-gaap:CommonStockMember2021-01-012021-03-310001069157us-gaap:CommonStockIncludingAdditionalPaidInCapitalMember2021-01-012021-03-310001069157us-gaap:TreasuryStockMember2021-01-012021-03-310001069157us-gaap:CommonStockMember2021-03-310001069157us-gaap:CommonStockIncludingAdditionalPaidInCapitalMember2021-03-310001069157us-gaap:RetainedEarningsMember2021-03-310001069157us-gaap:TreasuryStockMember2021-03-310001069157us-gaap:AccumulatedOtherComprehensiveIncomeMember2021-03-3100010691572021-03-310001069157us-gaap:CommonStockMember2021-12-310001069157us-gaap:CommonStockIncludingAdditionalPaidInCapitalMember2021-12-310001069157us-gaap:RetainedEarningsMember2021-12-310001069157us-gaap:TreasuryStockMember2021-12-310001069157us-gaap:AccumulatedOtherComprehensiveIncomeMember2021-12-310001069157us-gaap:RetainedEarningsMember2022-01-012022-03-310001069157us-gaap:AccumulatedOtherComprehensiveIncomeMember2022-01-012022-03-310001069157us-gaap:CommonStockMember2022-01-012022-03-310001069157us-gaap:CommonStockIncludingAdditionalPaidInCapitalMember2022-01-012022-03-310001069157us-gaap:TreasuryStockMember2022-01-012022-03-310001069157us-gaap:CommonStockMember2022-03-310001069157us-gaap:CommonStockIncludingAdditionalPaidInCapitalMember2022-03-310001069157us-gaap:RetainedEarningsMember2022-03-310001069157us-gaap:TreasuryStockMember2022-03-310001069157us-gaap:AccumulatedOtherComprehensiveIncomeMember2022-03-31ewbc:trust0001069157us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel1Memberus-gaap:USTreasurySecuritiesMember2022-03-310001069157us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Memberus-gaap:USTreasurySecuritiesMember2022-03-310001069157us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:USTreasurySecuritiesMember2022-03-310001069157us-gaap:FairValueMeasurementsRecurringMemberus-gaap:USTreasurySecuritiesMember2022-03-310001069157us-gaap:USGovernmentSponsoredEnterprisesDebtSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel1Member2022-03-310001069157us-gaap:USGovernmentSponsoredEnterprisesDebtSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2022-03-310001069157us-gaap:USGovernmentSponsoredEnterprisesDebtSecuritiesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2022-03-310001069157us-gaap:USGovernmentSponsoredEnterprisesDebtSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMember2022-03-310001069157us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel1Memberewbc:CommercialMortgageBackedSecuritiesIssuedByUSGovernmentAgenciesAndGovernmentSponsoredEnterpriseMember2022-03-310001069157us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Memberewbc:CommercialMortgageBackedSecuritiesIssuedByUSGovernmentAgenciesAndGovernmentSponsoredEnterpriseMember2022-03-310001069157us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberewbc:CommercialMortgageBackedSecuritiesIssuedByUSGovernmentAgenciesAndGovernmentSponsoredEnterpriseMember2022-03-310001069157us-gaap:FairValueMeasurementsRecurringMemberewbc:CommercialMortgageBackedSecuritiesIssuedByUSGovernmentAgenciesAndGovernmentSponsoredEnterpriseMember2022-03-310001069157us-gaap:FairValueMeasurementsRecurringMemberewbc:ResidentialMortgageBackedSecuritiesIssuedByUSGovernmentAgenciesAndGovernmentSponsoredEnterpriseMemberus-gaap:FairValueInputsLevel1Member2022-03-310001069157us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Memberewbc:ResidentialMortgageBackedSecuritiesIssuedByUSGovernmentAgenciesAndGovernmentSponsoredEnterpriseMember2022-03-310001069157us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberewbc:ResidentialMortgageBackedSecuritiesIssuedByUSGovernmentAgenciesAndGovernmentSponsoredEnterpriseMember2022-03-310001069157us-gaap:FairValueMeasurementsRecurringMemberewbc:ResidentialMortgageBackedSecuritiesIssuedByUSGovernmentAgenciesAndGovernmentSponsoredEnterpriseMember2022-03-310001069157us-gaap:FairValueMeasurementsRecurringMemberus-gaap:USStatesAndPoliticalSubdivisionsMemberus-gaap:FairValueInputsLevel1Member2022-03-310001069157us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Memberus-gaap:USStatesAndPoliticalSubdivisionsMember2022-03-310001069157us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:USStatesAndPoliticalSubdivisionsMember2022-03-310001069157us-gaap:FairValueMeasurementsRecurringMemberus-gaap:USStatesAndPoliticalSubdivisionsMember2022-03-310001069157us-gaap:FairValueMeasurementsRecurringMemberus-gaap:CommercialMortgageBackedSecuritiesMemberus-gaap:FairValueInputsLevel1Member2022-03-310001069157us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Memberus-gaap:CommercialMortgageBackedSecuritiesMember2022-03-310001069157us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:CommercialMortgageBackedSecuritiesMember2022-03-310001069157us-gaap:FairValueMeasurementsRecurringMemberus-gaap:CommercialMortgageBackedSecuritiesMember2022-03-310001069157us-gaap:ResidentialMortgageBackedSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel1Member2022-03-310001069157us-gaap:ResidentialMortgageBackedSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2022-03-310001069157us-gaap:ResidentialMortgageBackedSecuritiesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2022-03-310001069157us-gaap:ResidentialMortgageBackedSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMember2022-03-310001069157us-gaap:CorporateDebtSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel1Member2022-03-310001069157us-gaap:CorporateDebtSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2022-03-310001069157us-gaap:CorporateDebtSecuritiesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2022-03-310001069157us-gaap:CorporateDebtSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMember2022-03-310001069157us-gaap:FairValueMeasurementsRecurringMemberewbc:ForeignGovernmentBondsMemberus-gaap:FairValueInputsLevel1Member2022-03-310001069157us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Memberewbc:ForeignGovernmentBondsMember2022-03-310001069157us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberewbc:ForeignGovernmentBondsMember2022-03-310001069157us-gaap:FairValueMeasurementsRecurringMemberewbc:ForeignGovernmentBondsMember2022-03-310001069157us-gaap:AssetBackedSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel1Member2022-03-310001069157us-gaap:AssetBackedSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2022-03-310001069157us-gaap:AssetBackedSecuritiesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2022-03-310001069157us-gaap:AssetBackedSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMember2022-03-310001069157us-gaap:CollateralizedLoanObligationsMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel1Member2022-03-310001069157us-gaap:CollateralizedLoanObligationsMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2022-03-310001069157us-gaap:CollateralizedLoanObligationsMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2022-03-310001069157us-gaap:CollateralizedLoanObligationsMemberus-gaap:FairValueMeasurementsRecurringMember2022-03-310001069157us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel1Member2022-03-310001069157us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2022-03-310001069157us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2022-03-310001069157us-gaap:FairValueMeasurementsRecurringMember2022-03-310001069157us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel1Memberus-gaap:InterestRateContractMember2022-03-310001069157us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Memberus-gaap:InterestRateContractMember2022-03-310001069157us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:InterestRateContractMember2022-03-310001069157us-gaap:FairValueMeasurementsRecurringMemberus-gaap:InterestRateContractMember2022-03-310001069157us-gaap:ForeignExchangeContractMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel1Member2022-03-310001069157us-gaap:ForeignExchangeContractMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2022-03-310001069157us-gaap:ForeignExchangeContractMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2022-03-310001069157us-gaap:ForeignExchangeContractMemberus-gaap:FairValueMeasurementsRecurringMember2022-03-310001069157us-gaap:EquityContractMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel1Member2022-03-310001069157us-gaap:EquityContractMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2022-03-310001069157us-gaap:EquityContractMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2022-03-310001069157us-gaap:EquityContractMemberus-gaap:FairValueMeasurementsRecurringMember2022-03-310001069157us-gaap:CommodityContractMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel1Member2022-03-310001069157us-gaap:CommodityContractMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2022-03-310001069157us-gaap:FairValueInputsLevel3Memberus-gaap:CommodityContractMemberus-gaap:FairValueMeasurementsRecurringMember2022-03-310001069157us-gaap:CommodityContractMemberus-gaap:FairValueMeasurementsRecurringMember2022-03-310001069157us-gaap:CreditRiskContractMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel1Member2022-03-310001069157us-gaap:CreditRiskContractMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2022-03-310001069157us-gaap:FairValueInputsLevel3Memberus-gaap:CreditRiskContractMemberus-gaap:FairValueMeasurementsRecurringMember2022-03-310001069157us-gaap:CreditRiskContractMemberus-gaap:FairValueMeasurementsRecurringMember2022-03-310001069157us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel1Memberus-gaap:USTreasurySecuritiesMember2021-12-310001069157us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Memberus-gaap:USTreasurySecuritiesMember2021-12-310001069157us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:USTreasurySecuritiesMember2021-12-310001069157us-gaap:FairValueMeasurementsRecurringMemberus-gaap:USTreasurySecuritiesMember2021-12-310001069157us-gaap:USGovernmentSponsoredEnterprisesDebtSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel1Member2021-12-310001069157us-gaap:USGovernmentSponsoredEnterprisesDebtSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2021-12-310001069157us-gaap:USGovernmentSponsoredEnterprisesDebtSecuritiesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2021-12-310001069157us-gaap:USGovernmentSponsoredEnterprisesDebtSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMember2021-12-310001069157us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel1Memberewbc:CommercialMortgageBackedSecuritiesIssuedByUSGovernmentAgenciesAndGovernmentSponsoredEnterpriseMember2021-12-310001069157us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Memberewbc:CommercialMortgageBackedSecuritiesIssuedByUSGovernmentAgenciesAndGovernmentSponsoredEnterpriseMember2021-12-310001069157us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberewbc:CommercialMortgageBackedSecuritiesIssuedByUSGovernmentAgenciesAndGovernmentSponsoredEnterpriseMember2021-12-310001069157us-gaap:FairValueMeasurementsRecurringMemberewbc:CommercialMortgageBackedSecuritiesIssuedByUSGovernmentAgenciesAndGovernmentSponsoredEnterpriseMember2021-12-310001069157us-gaap:FairValueMeasurementsRecurringMemberewbc:ResidentialMortgageBackedSecuritiesIssuedByUSGovernmentAgenciesAndGovernmentSponsoredEnterpriseMemberus-gaap:FairValueInputsLevel1Member2021-12-310001069157us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Memberewbc:ResidentialMortgageBackedSecuritiesIssuedByUSGovernmentAgenciesAndGovernmentSponsoredEnterpriseMember2021-12-310001069157us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberewbc:ResidentialMortgageBackedSecuritiesIssuedByUSGovernmentAgenciesAndGovernmentSponsoredEnterpriseMember2021-12-310001069157us-gaap:FairValueMeasurementsRecurringMemberewbc:ResidentialMortgageBackedSecuritiesIssuedByUSGovernmentAgenciesAndGovernmentSponsoredEnterpriseMember2021-12-310001069157us-gaap:FairValueMeasurementsRecurringMemberus-gaap:USStatesAndPoliticalSubdivisionsMemberus-gaap:FairValueInputsLevel1Member2021-12-310001069157us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Memberus-gaap:USStatesAndPoliticalSubdivisionsMember2021-12-310001069157us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:USStatesAndPoliticalSubdivisionsMember2021-12-310001069157us-gaap:FairValueMeasurementsRecurringMemberus-gaap:USStatesAndPoliticalSubdivisionsMember2021-12-310001069157us-gaap:FairValueMeasurementsRecurringMemberus-gaap:CommercialMortgageBackedSecuritiesMemberus-gaap:FairValueInputsLevel1Member2021-12-310001069157us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Memberus-gaap:CommercialMortgageBackedSecuritiesMember2021-12-310001069157us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:CommercialMortgageBackedSecuritiesMember2021-12-310001069157us-gaap:FairValueMeasurementsRecurringMemberus-gaap:CommercialMortgageBackedSecuritiesMember2021-12-310001069157us-gaap:ResidentialMortgageBackedSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel1Member2021-12-310001069157us-gaap:ResidentialMortgageBackedSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2021-12-310001069157us-gaap:ResidentialMortgageBackedSecuritiesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2021-12-310001069157us-gaap:ResidentialMortgageBackedSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMember2021-12-310001069157us-gaap:CorporateDebtSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel1Member2021-12-310001069157us-gaap:CorporateDebtSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2021-12-310001069157us-gaap:CorporateDebtSecuritiesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2021-12-310001069157us-gaap:CorporateDebtSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMember2021-12-310001069157us-gaap:FairValueMeasurementsRecurringMemberewbc:ForeignGovernmentBondsMemberus-gaap:FairValueInputsLevel1Member2021-12-310001069157us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Memberewbc:ForeignGovernmentBondsMember2021-12-310001069157us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberewbc:ForeignGovernmentBondsMember2021-12-310001069157us-gaap:FairValueMeasurementsRecurringMemberewbc:ForeignGovernmentBondsMember2021-12-310001069157us-gaap:AssetBackedSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel1Member2021-12-310001069157us-gaap:AssetBackedSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2021-12-310001069157us-gaap:AssetBackedSecuritiesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2021-12-310001069157us-gaap:AssetBackedSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMember2021-12-310001069157us-gaap:CollateralizedLoanObligationsMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel1Member2021-12-310001069157us-gaap:CollateralizedLoanObligationsMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2021-12-310001069157us-gaap:CollateralizedLoanObligationsMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2021-12-310001069157us-gaap:CollateralizedLoanObligationsMemberus-gaap:FairValueMeasurementsRecurringMember2021-12-310001069157us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel1Member2021-12-310001069157us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2021-12-310001069157us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2021-12-310001069157us-gaap:FairValueMeasurementsRecurringMember2021-12-310001069157us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel1Memberus-gaap:InterestRateContractMember2021-12-310001069157us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Memberus-gaap:InterestRateContractMember2021-12-310001069157us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:InterestRateContractMember2021-12-310001069157us-gaap:FairValueMeasurementsRecurringMemberus-gaap:InterestRateContractMember2021-12-310001069157us-gaap:ForeignExchangeContractMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel1Member2021-12-310001069157us-gaap:ForeignExchangeContractMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2021-12-310001069157us-gaap:ForeignExchangeContractMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2021-12-310001069157us-gaap:ForeignExchangeContractMemberus-gaap:FairValueMeasurementsRecurringMember2021-12-310001069157us-gaap:EquityContractMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel1Member2021-12-310001069157us-gaap:EquityContractMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2021-12-310001069157us-gaap:EquityContractMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2021-12-310001069157us-gaap:EquityContractMemberus-gaap:FairValueMeasurementsRecurringMember2021-12-310001069157us-gaap:CommodityContractMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel1Member2021-12-310001069157us-gaap:CommodityContractMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2021-12-310001069157us-gaap:FairValueInputsLevel3Memberus-gaap:CommodityContractMemberus-gaap:FairValueMeasurementsRecurringMember2021-12-310001069157us-gaap:CommodityContractMemberus-gaap:FairValueMeasurementsRecurringMember2021-12-310001069157us-gaap:CreditRiskContractMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel1Member2021-12-310001069157us-gaap:CreditRiskContractMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2021-12-310001069157us-gaap:FairValueInputsLevel3Memberus-gaap:CreditRiskContractMemberus-gaap:FairValueMeasurementsRecurringMember2021-12-310001069157us-gaap:CreditRiskContractMemberus-gaap:FairValueMeasurementsRecurringMember2021-12-310001069157us-gaap:FairValueMeasurementsRecurringMember2022-01-012022-03-310001069157us-gaap:EquityContractMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2020-12-310001069157us-gaap:EquityContractMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2022-01-012022-03-310001069157us-gaap:EquityContractMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2021-01-012021-03-310001069157us-gaap:EquityContractMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2021-03-310001069157srt:MinimumMemberus-gaap:EquityContractMemberewbc:BlackScholesOptionPricingModelMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:MeasurementInputPriceVolatilityMember2022-03-31xbrli:pure0001069157us-gaap:EquityContractMemberewbc:BlackScholesOptionPricingModelMembersrt:MaximumMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:MeasurementInputPriceVolatilityMember2022-03-310001069157us-gaap:EquityContractMemberewbc:BlackScholesOptionPricingModelMemberus-gaap:FairValueInputsLevel3Membersrt:WeightedAverageMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:MeasurementInputPriceVolatilityMember2022-03-310001069157us-gaap:EquityContractMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:MeasurementInputDiscountForLackOfMarketabilityMember2022-03-310001069157us-gaap:EquityContractMemberus-gaap:FairValueInputsLevel3Membersrt:WeightedAverageMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:MeasurementInputDiscountForLackOfMarketabilityMember2022-03-310001069157srt:MinimumMemberus-gaap:EquityContractMemberewbc:BlackScholesOptionPricingModelMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:MeasurementInputPriceVolatilityMember2021-12-310001069157us-gaap:EquityContractMemberewbc:BlackScholesOptionPricingModelMembersrt:MaximumMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:MeasurementInputPriceVolatilityMember2021-12-310001069157us-gaap:EquityContractMemberewbc:BlackScholesOptionPricingModelMemberus-gaap:FairValueInputsLevel3Membersrt:WeightedAverageMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:MeasurementInputPriceVolatilityMember2021-12-310001069157us-gaap:EquityContractMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:MeasurementInputDiscountForLackOfMarketabilityMember2021-12-310001069157us-gaap:EquityContractMemberus-gaap:FairValueInputsLevel3Membersrt:WeightedAverageMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:MeasurementInputDiscountForLackOfMarketabilityMember2021-12-310001069157us-gaap:FairValueMeasurementsNonrecurringMember2022-01-012022-03-310001069157us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:CommercialPortfolioSegmentMemberus-gaap:FairValueInputsLevel1Memberewbc:CommercialAndIndustrialLoanMember2022-03-310001069157us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:CommercialPortfolioSegmentMemberus-gaap:FairValueInputsLevel2Memberewbc:CommercialAndIndustrialLoanMember2022-03-310001069157us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel3Memberus-gaap:CommercialPortfolioSegmentMemberewbc:CommercialAndIndustrialLoanMember2022-03-310001069157us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:CommercialPortfolioSegmentMemberewbc:CommercialAndIndustrialLoanMember2022-03-310001069157us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:CommercialRealEstateMemberus-gaap:CommercialPortfolioSegmentMemberus-gaap:FairValueInputsLevel1Member2022-03-310001069157us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:CommercialRealEstateMemberus-gaap:CommercialPortfolioSegmentMemberus-gaap:FairValueInputsLevel2Member2022-03-310001069157us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel3Memberus-gaap:CommercialRealEstateMemberus-gaap:CommercialPortfolioSegmentMember2022-03-310001069157us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:CommercialRealEstateMemberus-gaap:CommercialPortfolioSegmentMember2022-03-310001069157us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:CommercialPortfolioSegmentMemberus-gaap:FairValueInputsLevel1Member2022-03-310001069157us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:CommercialPortfolioSegmentMemberus-gaap:FairValueInputsLevel2Member2022-03-310001069157us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel3Memberus-gaap:CommercialPortfolioSegmentMember2022-03-310001069157us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:CommercialPortfolioSegmentMember2022-03-310001069157us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityMemberus-gaap:FairValueInputsLevel1Member2022-03-310001069157us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel2Memberus-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityMember2022-03-310001069157us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel3Memberus-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityMember2022-03-310001069157us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityMember2022-03-310001069157us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:ConsumerPortfolioSegmentMemberus-gaap:FairValueInputsLevel1Member2022-03-310001069157us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel2Memberus-gaap:ConsumerPortfolioSegmentMember2022-03-310001069157us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel3Memberus-gaap:ConsumerPortfolioSegmentMember2022-03-310001069157us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:ConsumerPortfolioSegmentMember2022-03-310001069157us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel1Member2022-03-310001069157us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel2Member2022-03-310001069157us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel3Member2022-03-310001069157us-gaap:FairValueMeasurementsNonrecurringMember2022-03-310001069157us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:CommercialPortfolioSegmentMemberus-gaap:FairValueInputsLevel1Memberewbc:CommercialAndIndustrialLoanMember2021-12-310001069157us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:CommercialPortfolioSegmentMemberus-gaap:FairValueInputsLevel2Memberewbc:CommercialAndIndustrialLoanMember2021-12-310001069157us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel3Memberus-gaap:CommercialPortfolioSegmentMemberewbc:CommercialAndIndustrialLoanMember2021-12-310001069157us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:CommercialPortfolioSegmentMemberewbc:CommercialAndIndustrialLoanMember2021-12-310001069157us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:CommercialRealEstateMemberus-gaap:CommercialPortfolioSegmentMemberus-gaap:FairValueInputsLevel1Member2021-12-310001069157us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:CommercialRealEstateMemberus-gaap:CommercialPortfolioSegmentMemberus-gaap:FairValueInputsLevel2Member2021-12-310001069157us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel3Memberus-gaap:CommercialRealEstateMemberus-gaap:CommercialPortfolioSegmentMember2021-12-310001069157us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:CommercialRealEstateMemberus-gaap:CommercialPortfolioSegmentMember2021-12-310001069157us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:CommercialPortfolioSegmentMemberus-gaap:FairValueInputsLevel1Member2021-12-310001069157us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:CommercialPortfolioSegmentMemberus-gaap:FairValueInputsLevel2Member2021-12-310001069157us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel3Memberus-gaap:CommercialPortfolioSegmentMember2021-12-310001069157us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:CommercialPortfolioSegmentMember2021-12-310001069157us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityMemberus-gaap:FairValueInputsLevel1Member2021-12-310001069157us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel2Memberus-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityMember2021-12-310001069157us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel3Memberus-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityMember2021-12-310001069157us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityMember2021-12-310001069157us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:ConsumerPortfolioSegmentMemberus-gaap:FairValueInputsLevel1Member2021-12-310001069157us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel2Memberus-gaap:ConsumerPortfolioSegmentMember2021-12-310001069157us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel3Memberus-gaap:ConsumerPortfolioSegmentMember2021-12-310001069157us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:ConsumerPortfolioSegmentMember2021-12-310001069157us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel1Member2021-12-310001069157us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel2Member2021-12-310001069157us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel3Member2021-12-310001069157us-gaap:FairValueMeasurementsNonrecurringMember2021-12-310001069157ewbc:OtherNonperformingAssetsMemberus-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel1Member2021-12-310001069157ewbc:OtherNonperformingAssetsMemberus-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel2Member2021-12-310001069157ewbc:OtherNonperformingAssetsMemberus-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel3Member2021-12-310001069157ewbc:OtherNonperformingAssetsMemberus-gaap:FairValueMeasurementsNonrecurringMember2021-12-310001069157us-gaap:LoansReceivableMemberus-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:CommercialPortfolioSegmentMemberewbc:CommercialAndIndustrialLoanMember2022-01-012022-03-310001069157us-gaap:LoansReceivableMemberus-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:CommercialPortfolioSegmentMemberewbc:CommercialAndIndustrialLoanMember2021-01-012021-03-310001069157us-gaap:LoansReceivableMemberus-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:CommercialRealEstateMemberus-gaap:CommercialPortfolioSegmentMember2022-01-012022-03-310001069157us-gaap:LoansReceivableMemberus-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:CommercialRealEstateMemberus-gaap:CommercialPortfolioSegmentMember2021-01-012021-03-310001069157us-gaap:LoansReceivableMemberus-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:CommercialPortfolioSegmentMemberewbc:MultifamilyResidentialMember2022-01-012022-03-310001069157us-gaap:LoansReceivableMemberus-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:CommercialPortfolioSegmentMemberewbc:MultifamilyResidentialMember2021-01-012021-03-310001069157us-gaap:LoansReceivableMemberus-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:CommercialPortfolioSegmentMemberewbc:ConstructionAndLandLoanMember2022-01-012022-03-310001069157us-gaap:LoansReceivableMemberus-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:CommercialPortfolioSegmentMemberewbc:ConstructionAndLandLoanMember2021-01-012021-03-310001069157us-gaap:LoansReceivableMemberus-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:CommercialPortfolioSegmentMember2022-01-012022-03-310001069157us-gaap:LoansReceivableMemberus-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:CommercialPortfolioSegmentMember2021-01-012021-03-310001069157us-gaap:LoansReceivableMemberus-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityMember2022-01-012022-03-310001069157us-gaap:LoansReceivableMemberus-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityMember2021-01-012021-03-310001069157us-gaap:LoansReceivableMemberus-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:ConsumerPortfolioSegmentMember2022-01-012022-03-310001069157us-gaap:LoansReceivableMemberus-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:ConsumerPortfolioSegmentMember2021-01-012021-03-310001069157us-gaap:LoansReceivableMemberus-gaap:FairValueMeasurementsNonrecurringMember2022-01-012022-03-310001069157us-gaap:LoansReceivableMemberus-gaap:FairValueMeasurementsNonrecurringMember2021-01-012021-03-310001069157ewbc:OtherNonperformingAssetsMemberus-gaap:FairValueMeasurementsNonrecurringMember2022-01-012022-03-310001069157ewbc:OtherNonperformingAssetsMemberus-gaap:FairValueMeasurementsNonrecurringMember2021-01-012021-03-310001069157us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel3Memberus-gaap:IncomeApproachValuationTechniqueMember2022-03-310001069157srt:MinimumMemberus-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel3Memberus-gaap:IncomeApproachValuationTechniqueMemberus-gaap:MeasurementInputDiscountRateMember2022-03-310001069157us-gaap:FairValueMeasurementsNonrecurringMembersrt:MaximumMemberus-gaap:FairValueInputsLevel3Memberus-gaap:IncomeApproachValuationTechniqueMemberus-gaap:MeasurementInputDiscountRateMember2022-03-310001069157us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel3Memberus-gaap:IncomeApproachValuationTechniqueMembersrt:WeightedAverageMemberus-gaap:MeasurementInputDiscountRateMember2022-03-310001069157us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel3Memberewbc:ValuationTechniqueFairValueOfCollateralDiscountMember2022-03-310001069157srt:MinimumMemberus-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel3Memberewbc:ValuationTechniqueFairValueOfCollateralDiscountMemberus-gaap:MeasurementInputDiscountRateMember2022-03-310001069157us-gaap:FairValueMeasurementsNonrecurringMembersrt:MaximumMemberus-gaap:FairValueInputsLevel3Memberewbc:ValuationTechniqueFairValueOfCollateralDiscountMemberus-gaap:MeasurementInputDiscountRateMember2022-03-310001069157us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel3Memberewbc:ValuationTechniqueFairValueOfCollateralDiscountMembersrt:WeightedAverageMemberus-gaap:MeasurementInputDiscountRateMember2022-03-310001069157ewbc:ValuationTechniqueFairValueOfValuationTechniqueFairValueOfPropertySellingCostMemberus-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel3Member2022-03-310001069157ewbc:ValuationTechniqueFairValueOfValuationTechniqueFairValueOfPropertySellingCostMemberus-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel3Memberus-gaap:MeasurementInputCostToSellMember2022-03-310001069157ewbc:ValuationTechniqueFairValueOfValuationTechniqueFairValueOfPropertySellingCostMemberus-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel3Membersrt:WeightedAverageMemberus-gaap:MeasurementInputCostToSellMember2022-03-310001069157us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel3Memberus-gaap:IncomeApproachValuationTechniqueMember2021-12-310001069157srt:MinimumMemberus-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel3Memberus-gaap:IncomeApproachValuationTechniqueMemberus-gaap:MeasurementInputDiscountRateMember2021-12-310001069157us-gaap:FairValueMeasurementsNonrecurringMembersrt:MaximumMemberus-gaap:FairValueInputsLevel3Memberus-gaap:IncomeApproachValuationTechniqueMemberus-gaap:MeasurementInputDiscountRateMember2021-12-310001069157us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel3Memberus-gaap:IncomeApproachValuationTechniqueMembersrt:WeightedAverageMemberus-gaap:MeasurementInputDiscountRateMember2021-12-310001069157us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel3Memberewbc:ValuationTechniqueFairValueOfCollateralDiscountMember2021-12-310001069157srt:MinimumMemberus-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel3Memberewbc:ValuationTechniqueFairValueOfCollateralDiscountMemberus-gaap:MeasurementInputDiscountRateMember2021-12-310001069157us-gaap:FairValueMeasurementsNonrecurringMembersrt:MaximumMemberus-gaap:FairValueInputsLevel3Memberewbc:ValuationTechniqueFairValueOfCollateralDiscountMemberus-gaap:MeasurementInputDiscountRateMember2021-12-310001069157us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel3Memberewbc:ValuationTechniqueFairValueOfCollateralDiscountMembersrt:WeightedAverageMemberus-gaap:MeasurementInputDiscountRateMember2021-12-310001069157ewbc:ValuationTechniqueFairValueOfValuationTechniqueFairValueOfPropertySellingCostMemberus-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel3Member2021-12-310001069157ewbc:ValuationTechniqueFairValueOfValuationTechniqueFairValueOfPropertySellingCostMemberus-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel3Memberus-gaap:MeasurementInputCostToSellMember2021-12-310001069157ewbc:ValuationTechniqueFairValueOfValuationTechniqueFairValueOfPropertySellingCostMemberus-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel3Membersrt:WeightedAverageMemberus-gaap:MeasurementInputCostToSellMember2021-12-310001069157us-gaap:CarryingReportedAmountFairValueDisclosureMember2022-03-310001069157us-gaap:EstimateOfFairValueFairValueDisclosureMemberus-gaap:FairValueInputsLevel1Member2022-03-310001069157us-gaap:EstimateOfFairValueFairValueDisclosureMemberus-gaap:FairValueInputsLevel2Member2022-03-310001069157us-gaap:FairValueInputsLevel3Memberus-gaap:EstimateOfFairValueFairValueDisclosureMember2022-03-310001069157us-gaap:EstimateOfFairValueFairValueDisclosureMember2022-03-310001069157us-gaap:CarryingReportedAmountFairValueDisclosureMember2021-12-310001069157us-gaap:EstimateOfFairValueFairValueDisclosureMemberus-gaap:FairValueInputsLevel1Member2021-12-310001069157us-gaap:EstimateOfFairValueFairValueDisclosureMemberus-gaap:FairValueInputsLevel2Member2021-12-310001069157us-gaap:FairValueInputsLevel3Memberus-gaap:EstimateOfFairValueFairValueDisclosureMember2021-12-310001069157us-gaap:EstimateOfFairValueFairValueDisclosureMember2021-12-310001069157ewbc:SecuritiesPurchasedUnderResaleAgreementsMember2022-01-012022-03-310001069157ewbc:SecuritiesPurchasedUnderResaleAgreementsMember2021-01-012021-03-310001069157ewbc:LoansPurchasedUnderResaleAgreementsMember2022-01-012022-03-310001069157ewbc:LoansPurchasedUnderResaleAgreementsMember2021-01-012021-03-310001069157us-gaap:USTreasurySecuritiesMember2022-03-310001069157us-gaap:USGovernmentSponsoredEnterprisesDebtSecuritiesMember2022-03-310001069157ewbc:CommercialMortgageBackedSecuritiesIssuedByUSGovernmentAgenciesAndGovernmentSponsoredEnterpriseMember2022-03-310001069157ewbc:ResidentialMortgageBackedSecuritiesIssuedByUSGovernmentAgenciesAndGovernmentSponsoredEnterpriseMember2022-03-310001069157us-gaap:USStatesAndPoliticalSubdivisionsMember2022-03-310001069157us-gaap:CommercialMortgageBackedSecuritiesMember2022-03-310001069157us-gaap:ResidentialMortgageBackedSecuritiesMember2022-03-310001069157us-gaap:CorporateDebtSecuritiesMember2022-03-310001069157ewbc:ForeignGovernmentBondsMember2022-03-310001069157us-gaap:AssetBackedSecuritiesMember2022-03-310001069157us-gaap:CollateralizedLoanObligationsMember2022-03-310001069157us-gaap:USTreasurySecuritiesMember2021-12-310001069157us-gaap:USGovernmentSponsoredEnterprisesDebtSecuritiesMember2021-12-310001069157ewbc:CommercialMortgageBackedSecuritiesIssuedByUSGovernmentAgenciesAndGovernmentSponsoredEnterpriseMember2021-12-310001069157ewbc:ResidentialMortgageBackedSecuritiesIssuedByUSGovernmentAgenciesAndGovernmentSponsoredEnterpriseMember2021-12-310001069157us-gaap:USStatesAndPoliticalSubdivisionsMember2021-12-310001069157us-gaap:CommercialMortgageBackedSecuritiesMember2021-12-310001069157us-gaap:ResidentialMortgageBackedSecuritiesMember2021-12-310001069157us-gaap:CorporateDebtSecuritiesMember2021-12-310001069157ewbc:ForeignGovernmentBondsMember2021-12-310001069157us-gaap:AssetBackedSecuritiesMember2021-12-310001069157us-gaap:CollateralizedLoanObligationsMember2021-12-31ewbc:security0001069157ewbc:MortgageBackedSecuritiesIssuedByUSGovernmentAgenciesAndGovernmentSponsoredEnterpriseMember2022-03-310001069157ewbc:NonAgencyMortgageBackedSecuritiesMember2022-03-3100010691572021-01-012021-12-310001069157ewbc:MortgageBackedSecuritiesIssuedByUSGovernmentAgenciesAndGovernmentSponsoredEnterpriseMember2021-12-310001069157us-gaap:AvailableforsaleSecuritiesMember2022-01-012022-03-310001069157us-gaap:AvailableforsaleSecuritiesMember2021-01-012021-03-310001069157us-gaap:DesignatedAsHedgingInstrumentMemberus-gaap:CashFlowHedgingMemberus-gaap:InterestRateContractMember2022-03-310001069157us-gaap:DesignatedAsHedgingInstrumentMemberus-gaap:CashFlowHedgingMemberus-gaap:InterestRateContractMember2021-12-310001069157us-gaap:NetInvestmentHedgingMemberus-gaap:ForeignExchangeContractMemberus-gaap:DesignatedAsHedgingInstrumentMember2022-03-310001069157us-gaap:NetInvestmentHedgingMemberus-gaap:ForeignExchangeContractMemberus-gaap:DesignatedAsHedgingInstrumentMember2021-12-310001069157us-gaap:DesignatedAsHedgingInstrumentMember2022-03-310001069157us-gaap:DesignatedAsHedgingInstrumentMember2021-12-310001069157us-gaap:NondesignatedMemberus-gaap:InterestRateContractMember2022-03-310001069157us-gaap:NondesignatedMemberus-gaap:InterestRateContractMember2021-12-310001069157us-gaap:ForeignExchangeContractMemberus-gaap:NondesignatedMember2022-03-310001069157us-gaap:ForeignExchangeContractMemberus-gaap:NondesignatedMember2021-12-310001069157us-gaap:NondesignatedMemberus-gaap:CreditRiskContractMember2022-03-310001069157us-gaap:NondesignatedMemberus-gaap:CreditRiskContractMember2021-12-310001069157us-gaap:EquityContractMemberus-gaap:NondesignatedMember2022-03-310001069157us-gaap:EquityContractMemberus-gaap:NondesignatedMember2021-12-310001069157us-gaap:NondesignatedMemberus-gaap:CommodityContractMember2022-03-310001069157us-gaap:NondesignatedMemberus-gaap:CommodityContractMember2021-12-310001069157us-gaap:NondesignatedMember2022-03-310001069157us-gaap:NondesignatedMember2021-12-310001069157us-gaap:NondesignatedMemberewbc:EquityPublicCompaniesMember2022-03-31ewbc:company0001069157us-gaap:NondesignatedMemberewbc:EquityPrivateCompaniesMember2022-03-310001069157us-gaap:NondesignatedMemberewbc:EquityPublicCompaniesMember2021-12-310001069157us-gaap:NondesignatedMemberewbc:EquityPrivateCompaniesMember2021-12-310001069157srt:CrudeOilMemberewbc:CustomerCounterpartyMember2022-01-012022-03-31utr:Boe0001069157ewbc:CustomerCounterpartyMembersrt:NaturalGasReservesMember2022-01-012022-03-31utr:MMBTU0001069157srt:CrudeOilMemberewbc:CustomerCounterpartyMember2021-01-012021-12-310001069157ewbc:CustomerCounterpartyMembersrt:NaturalGasReservesMember2021-01-012021-12-310001069157us-gaap:DesignatedAsHedgingInstrumentMemberus-gaap:InterestRateSwapMemberus-gaap:CashFlowHedgingMember2020-12-310001069157us-gaap:DesignatedAsHedgingInstrumentMemberus-gaap:InterestRateSwapMemberus-gaap:CashFlowHedgingMember2022-03-31ewbc:derivative0001069157us-gaap:DesignatedAsHedgingInstrumentMemberus-gaap:CashFlowHedgingMemberus-gaap:InterestRateContractMember2022-01-012022-03-310001069157us-gaap:DesignatedAsHedgingInstrumentMemberus-gaap:CashFlowHedgingMemberus-gaap:InterestRateContractMember2021-01-012021-03-310001069157us-gaap:DesignatedAsHedgingInstrumentMemberus-gaap:CashFlowHedgingMemberus-gaap:InterestExpenseMemberus-gaap:InterestRateContractMember2022-01-012022-03-310001069157us-gaap:DesignatedAsHedgingInstrumentMemberus-gaap:CashFlowHedgingMemberus-gaap:InterestExpenseMemberus-gaap:InterestRateContractMember2021-01-012021-03-310001069157us-gaap:DesignatedAsHedgingInstrumentMemberus-gaap:CashFlowHedgingMemberus-gaap:InterestRateContractMemberus-gaap:InterestIncomeMember2022-01-012022-03-310001069157us-gaap:DesignatedAsHedgingInstrumentMemberus-gaap:CashFlowHedgingMemberus-gaap:InterestRateContractMemberus-gaap:InterestIncomeMember2021-01-012021-03-310001069157us-gaap:NetInvestmentHedgingMemberus-gaap:ForeignExchangeContractMemberus-gaap:DesignatedAsHedgingInstrumentMember2022-01-012022-03-310001069157us-gaap:NetInvestmentHedgingMemberus-gaap:ForeignExchangeContractMemberus-gaap:DesignatedAsHedgingInstrumentMember2021-01-012021-03-310001069157ewbc:WrittenOptionMemberus-gaap:NondesignatedMemberus-gaap:InterestRateContractMemberewbc:CustomerCounterpartyMember2022-03-310001069157ewbc:PurchasedOptionsMemberus-gaap:NondesignatedMemberus-gaap:InterestRateContractMemberewbc:FinancialCounterpartyMember2022-03-310001069157us-gaap:NondesignatedMemberus-gaap:InterestRateContractMemberewbc:CustomerCounterpartyMemberewbc:SoldCollarsandCorridorsMember2022-03-310001069157ewbc:CollarsandCorridorsMemberus-gaap:NondesignatedMemberus-gaap:InterestRateContractMemberewbc:FinancialCounterpartyMember2022-03-310001069157us-gaap:NondesignatedMemberus-gaap:InterestRateContractMemberewbc:CustomerCounterpartyMemberus-gaap:SwapMember2022-03-310001069157us-gaap:NondesignatedMemberus-gaap:InterestRateContractMemberewbc:FinancialCounterpartyMemberus-gaap:SwapMember2022-03-310001069157us-gaap:NondesignatedMemberus-gaap:InterestRateContractMemberewbc:CustomerCounterpartyMemberus-gaap:InterestRateContractMember2022-03-310001069157us-gaap:NondesignatedMemberus-gaap:InterestRateContractMemberewbc:FinancialCounterpartyMemberus-gaap:InterestRateContractMember2022-03-310001069157ewbc:WrittenOptionMemberus-gaap:NondesignatedMemberus-gaap:InterestRateContractMemberewbc:CustomerCounterpartyMember2021-12-310001069157ewbc:PurchasedOptionsMemberus-gaap:NondesignatedMemberus-gaap:InterestRateContractMemberewbc:FinancialCounterpartyMember2021-12-310001069157us-gaap:NondesignatedMemberus-gaap:InterestRateContractMemberewbc:CustomerCounterpartyMemberewbc:SoldCollarsandCorridorsMember2021-12-310001069157ewbc:CollarsandCorridorsMemberus-gaap:NondesignatedMemberus-gaap:InterestRateContractMemberewbc:FinancialCounterpartyMember2021-12-310001069157us-gaap:NondesignatedMemberus-gaap:InterestRateContractMemberewbc:CustomerCounterpartyMemberus-gaap:SwapMember2021-12-310001069157us-gaap:NondesignatedMemberus-gaap:InterestRateContractMemberewbc:FinancialCounterpartyMemberus-gaap:SwapMember2021-12-310001069157us-gaap:NondesignatedMemberus-gaap:InterestRateContractMemberewbc:CustomerCounterpartyMemberus-gaap:InterestRateContractMember2021-12-310001069157us-gaap:NondesignatedMemberus-gaap:InterestRateContractMemberewbc:FinancialCounterpartyMemberus-gaap:InterestRateContractMember2021-12-310001069157us-gaap:NondesignatedMemberewbc:FinancialCounterpartyMemberus-gaap:InterestRateContractMember2022-03-310001069157us-gaap:NondesignatedMemberus-gaap:InterestRateContractMemberewbc:LondonClearingHouseMember2022-03-310001069157us-gaap:NondesignatedMemberewbc:FinancialCounterpartyMemberus-gaap:InterestRateContractMember2021-12-310001069157us-gaap:NondesignatedMemberus-gaap:InterestRateContractMemberewbc:LondonClearingHouseMember2021-12-310001069157us-gaap:ForeignExchangeContractMemberus-gaap:NondesignatedMembersrt:MaximumMember2022-01-012022-03-310001069157us-gaap:ForeignExchangeContractMemberus-gaap:NondesignatedMembersrt:MaximumMember2021-01-012021-12-310001069157us-gaap:NondesignatedMemberewbc:ForwardsandSpotsMemberewbc:CustomerCounterpartyMemberus-gaap:ForeignExchangeContractMember2022-03-310001069157us-gaap:NondesignatedMemberewbc:ForwardsandSpotsMemberewbc:FinancialCounterpartyMemberus-gaap:ForeignExchangeContractMember2022-03-310001069157us-gaap:NondesignatedMemberewbc:CustomerCounterpartyMemberus-gaap:ForeignExchangeContractMemberus-gaap:SwapMember2022-03-310001069157us-gaap:NondesignatedMemberewbc:FinancialCounterpartyMemberus-gaap:ForeignExchangeContractMemberus-gaap:SwapMember2022-03-310001069157us-gaap:ForeignExchangeContractMemberus-gaap:NondesignatedMemberewbc:CustomerCounterpartyMemberus-gaap:ForeignExchangeContractMember2022-03-310001069157us-gaap:ForeignExchangeContractMemberus-gaap:NondesignatedMemberewbc:FinancialCounterpartyMemberus-gaap:ForeignExchangeContractMember2022-03-310001069157us-gaap:NondesignatedMemberewbc:ForwardsandSpotsMemberewbc:CustomerCounterpartyMemberus-gaap:ForeignExchangeContractMember2021-12-310001069157us-gaap:NondesignatedMemberewbc:ForwardsandSpotsMemberewbc:FinancialCounterpartyMemberus-gaap:ForeignExchangeContractMember2021-12-310001069157us-gaap:NondesignatedMemberewbc:CustomerCounterpartyMemberus-gaap:ForeignExchangeContractMemberus-gaap:SwapMember2021-12-310001069157us-gaap:NondesignatedMemberewbc:FinancialCounterpartyMemberus-gaap:ForeignExchangeContractMemberus-gaap:SwapMember2021-12-310001069157ewbc:WrittenOptionMemberus-gaap:NondesignatedMemberewbc:CustomerCounterpartyMemberus-gaap:ForeignExchangeContractMember2021-12-310001069157ewbc:PurchasedOptionsMemberus-gaap:NondesignatedMemberewbc:FinancialCounterpartyMemberus-gaap:ForeignExchangeContractMember2021-12-310001069157us-gaap:ForeignExchangeContractMemberus-gaap:NondesignatedMemberewbc:CustomerCounterpartyMemberus-gaap:ForeignExchangeContractMember2021-12-310001069157us-gaap:ForeignExchangeContractMemberus-gaap:NondesignatedMemberewbc:FinancialCounterpartyMemberus-gaap:ForeignExchangeContractMember2021-12-310001069157us-gaap:NondesignatedMemberus-gaap:ShortMemberus-gaap:CreditRiskContractMember2022-03-310001069157us-gaap:NondesignatedMemberus-gaap:ShortMemberus-gaap:CreditRiskContractMember2021-12-310001069157us-gaap:NondesignatedMemberus-gaap:ShortMemberus-gaap:CreditRiskContractMember2022-01-012022-03-310001069157us-gaap:NondesignatedMemberus-gaap:ShortMemberus-gaap:CreditRiskContractMember2021-01-012021-12-310001069157us-gaap:OtherCreditDerivativesMemberus-gaap:NondesignatedMemberus-gaap:ShortMemberus-gaap:CreditRiskContractMember2022-03-310001069157us-gaap:OtherCreditDerivativesMemberus-gaap:NondesignatedMemberus-gaap:ShortMemberus-gaap:CreditRiskContractMember2021-12-310001069157us-gaap:OtherCreditDerivativesMemberus-gaap:NondesignatedMemberus-gaap:CreditRiskContractMember2022-03-310001069157us-gaap:OtherCreditDerivativesMemberus-gaap:NondesignatedMemberus-gaap:CreditRiskContractMember2021-12-310001069157ewbc:WrittenOptionMemberus-gaap:NondesignatedMembersrt:CrudeOilMemberewbc:CustomerCounterpartyMemberus-gaap:CommodityContractMember2022-01-012022-03-310001069157ewbc:WrittenOptionMemberus-gaap:NondesignatedMembersrt:CrudeOilMemberewbc:CustomerCounterpartyMemberus-gaap:CommodityContractMember2022-03-310001069157ewbc:PurchasedOptionsMemberus-gaap:NondesignatedMembersrt:CrudeOilMemberewbc:FinancialCounterpartyMemberus-gaap:CommodityContractMember2022-01-012022-03-310001069157ewbc:PurchasedOptionsMemberus-gaap:NondesignatedMembersrt:CrudeOilMemberewbc:FinancialCounterpartyMemberus-gaap:CommodityContractMember2022-03-310001069157us-gaap:NondesignatedMembersrt:CrudeOilMemberewbc:CustomerCounterpartyMemberewbc:CollarsMemberus-gaap:CommodityContractMember2022-01-012022-03-310001069157us-gaap:NondesignatedMembersrt:CrudeOilMemberewbc:CustomerCounterpartyMemberewbc:CollarsMemberus-gaap:CommodityContractMember2022-03-310001069157us-gaap:NondesignatedMembersrt:CrudeOilMemberewbc:FinancialCounterpartyMemberewbc:CollarsMemberus-gaap:CommodityContractMember2022-01-012022-03-310001069157us-gaap:NondesignatedMembersrt:CrudeOilMemberewbc:FinancialCounterpartyMemberewbc:CollarsMemberus-gaap:CommodityContractMember2022-03-310001069157us-gaap:NondesignatedMembersrt:CrudeOilMemberewbc:CustomerCounterpartyMemberus-gaap:SwapMemberus-gaap:CommodityContractMember2022-01-012022-03-310001069157us-gaap:NondesignatedMembersrt:CrudeOilMemberewbc:CustomerCounterpartyMemberus-gaap:SwapMemberus-gaap:CommodityContractMember2022-03-310001069157us-gaap:NondesignatedMembersrt:CrudeOilMemberewbc:FinancialCounterpartyMemberus-gaap:SwapMemberus-gaap:CommodityContractMember2022-01-012022-03-310001069157us-gaap:NondesignatedMembersrt:CrudeOilMemberewbc:FinancialCounterpartyMemberus-gaap:SwapMemberus-gaap:CommodityContractMember2022-03-310001069157us-gaap:NondesignatedMembersrt:CrudeOilMemberus-gaap:CommodityContractMemberewbc:CustomerCounterpartyMemberus-gaap:CommodityContractMember2022-01-012022-03-310001069157us-gaap:NondesignatedMembersrt:CrudeOilMemberus-gaap:CommodityContractMemberewbc:CustomerCounterpartyMemberus-gaap:CommodityContractMember2022-03-310001069157us-gaap:NondesignatedMembersrt:CrudeOilMemberus-gaap:CommodityContractMemberewbc:FinancialCounterpartyMemberus-gaap:CommodityContractMember2022-01-012022-03-310001069157us-gaap:NondesignatedMembersrt:CrudeOilMemberus-gaap:CommodityContractMemberewbc:FinancialCounterpartyMemberus-gaap:CommodityContractMember2022-03-310001069157us-gaap:NondesignatedMembersrt:NaturalGasReservesMemberewbc:CustomerCounterpartyMemberewbc:CollarsMemberus-gaap:CommodityContractMember2022-01-012022-03-310001069157us-gaap:NondesignatedMembersrt:NaturalGasReservesMemberewbc:CustomerCounterpartyMemberewbc:CollarsMemberus-gaap:CommodityContractMember2022-03-310001069157us-gaap:NondesignatedMembersrt:NaturalGasReservesMemberewbc:FinancialCounterpartyMemberewbc:CollarsMemberus-gaap:CommodityContractMember2022-01-012022-03-310001069157us-gaap:NondesignatedMembersrt:NaturalGasReservesMemberewbc:FinancialCounterpartyMemberewbc:CollarsMemberus-gaap:CommodityContractMember2022-03-310001069157us-gaap:NondesignatedMembersrt:NaturalGasReservesMemberewbc:CustomerCounterpartyMemberus-gaap:SwapMemberus-gaap:CommodityContractMember2022-01-012022-03-310001069157us-gaap:NondesignatedMembersrt:NaturalGasReservesMemberewbc:CustomerCounterpartyMemberus-gaap:SwapMemberus-gaap:CommodityContractMember2022-03-310001069157us-gaap:NondesignatedMembersrt:NaturalGasReservesMemberewbc:FinancialCounterpartyMemberus-gaap:SwapMemberus-gaap:CommodityContractMember2022-01-012022-03-310001069157us-gaap:NondesignatedMembersrt:NaturalGasReservesMemberewbc:FinancialCounterpartyMemberus-gaap:SwapMemberus-gaap:CommodityContractMember2022-03-310001069157us-gaap:NondesignatedMemberus-gaap:CommodityContractMembersrt:NaturalGasReservesMemberewbc:CustomerCounterpartyMemberus-gaap:CommodityContractMember2022-01-012022-03-310001069157us-gaap:NondesignatedMemberus-gaap:CommodityContractMembersrt:NaturalGasReservesMemberewbc:CustomerCounterpartyMemberus-gaap:CommodityContractMember2022-03-310001069157us-gaap:NondesignatedMemberus-gaap:CommodityContractMembersrt:NaturalGasReservesMemberewbc:FinancialCounterpartyMemberus-gaap:CommodityContractMember2022-01-012022-03-310001069157us-gaap:NondesignatedMemberus-gaap:CommodityContractMembersrt:NaturalGasReservesMemberewbc:FinancialCounterpartyMemberus-gaap:CommodityContractMember2022-03-310001069157us-gaap:NondesignatedMemberus-gaap:CommodityContractMemberewbc:CustomerCounterpartyMemberus-gaap:CommodityContractMember2022-03-310001069157us-gaap:NondesignatedMemberus-gaap:CommodityContractMemberewbc:FinancialCounterpartyMemberus-gaap:CommodityContractMember2022-03-310001069157ewbc:WrittenOptionMemberus-gaap:NondesignatedMembersrt:CrudeOilMemberewbc:CustomerCounterpartyMemberus-gaap:CommodityContractMember2021-01-012021-12-310001069157ewbc:WrittenOptionMemberus-gaap:NondesignatedMembersrt:CrudeOilMemberewbc:CustomerCounterpartyMemberus-gaap:CommodityContractMember2021-12-310001069157ewbc:PurchasedOptionsMemberus-gaap:NondesignatedMembersrt:CrudeOilMemberewbc:FinancialCounterpartyMemberus-gaap:CommodityContractMember2021-01-012021-12-310001069157ewbc:PurchasedOptionsMemberus-gaap:NondesignatedMembersrt:CrudeOilMemberewbc:FinancialCounterpartyMemberus-gaap:CommodityContractMember2021-12-310001069157us-gaap:NondesignatedMembersrt:CrudeOilMemberewbc:CustomerCounterpartyMemberewbc:CollarsMemberus-gaap:CommodityContractMember2021-01-012021-12-310001069157us-gaap:NondesignatedMembersrt:CrudeOilMemberewbc:CustomerCounterpartyMemberewbc:CollarsMemberus-gaap:CommodityContractMember2021-12-310001069157us-gaap:NondesignatedMembersrt:CrudeOilMemberewbc:FinancialCounterpartyMemberewbc:CollarsMemberus-gaap:CommodityContractMember2021-01-012021-12-310001069157us-gaap:NondesignatedMembersrt:CrudeOilMemberewbc:FinancialCounterpartyMemberewbc:CollarsMemberus-gaap:CommodityContractMember2021-12-310001069157us-gaap:NondesignatedMembersrt:CrudeOilMemberewbc:CustomerCounterpartyMemberus-gaap:SwapMemberus-gaap:CommodityContractMember2021-01-012021-12-310001069157us-gaap:NondesignatedMembersrt:CrudeOilMemberewbc:CustomerCounterpartyMemberus-gaap:SwapMemberus-gaap:CommodityContractMember2021-12-310001069157us-gaap:NondesignatedMembersrt:CrudeOilMemberewbc:FinancialCounterpartyMemberus-gaap:SwapMemberus-gaap:CommodityContractMember2021-01-012021-12-310001069157us-gaap:NondesignatedMembersrt:CrudeOilMemberewbc:FinancialCounterpartyMemberus-gaap:SwapMemberus-gaap:CommodityContractMember2021-12-310001069157us-gaap:NondesignatedMembersrt:CrudeOilMemberus-gaap:CommodityContractMemberewbc:CustomerCounterpartyMemberus-gaap:CommodityContractMember2021-01-012021-12-310001069157us-gaap:NondesignatedMembersrt:CrudeOilMemberus-gaap:CommodityContractMemberewbc:CustomerCounterpartyMemberus-gaap:CommodityContractMember2021-12-310001069157us-gaap:NondesignatedMembersrt:CrudeOilMemberus-gaap:CommodityContractMemberewbc:FinancialCounterpartyMemberus-gaap:CommodityContractMember2021-01-012021-12-310001069157us-gaap:NondesignatedMembersrt:CrudeOilMemberus-gaap:CommodityContractMemberewbc:FinancialCounterpartyMemberus-gaap:CommodityContractMember2021-12-310001069157us-gaap:NondesignatedMembersrt:NaturalGasReservesMemberewbc:CustomerCounterpartyMemberewbc:CollarsMemberus-gaap:CommodityContractMember2021-01-012021-12-310001069157us-gaap:NondesignatedMembersrt:NaturalGasReservesMemberewbc:CustomerCounterpartyMemberewbc:CollarsMemberus-gaap:CommodityContractMember2021-12-310001069157us-gaap:NondesignatedMembersrt:NaturalGasReservesMemberewbc:FinancialCounterpartyMemberewbc:CollarsMemberus-gaap:CommodityContractMember2021-01-012021-12-310001069157us-gaap:NondesignatedMembersrt:NaturalGasReservesMemberewbc:FinancialCounterpartyMemberewbc:CollarsMemberus-gaap:CommodityContractMember2021-12-310001069157us-gaap:NondesignatedMembersrt:NaturalGasReservesMemberewbc:CustomerCounterpartyMemberus-gaap:SwapMemberus-gaap:CommodityContractMember2021-01-012021-12-310001069157us-gaap:NondesignatedMembersrt:NaturalGasReservesMemberewbc:CustomerCounterpartyMemberus-gaap:SwapMemberus-gaap:CommodityContractMember2021-12-310001069157us-gaap:NondesignatedMembersrt:NaturalGasReservesMemberewbc:FinancialCounterpartyMemberus-gaap:SwapMemberus-gaap:CommodityContractMember2021-01-012021-12-310001069157us-gaap:NondesignatedMembersrt:NaturalGasReservesMemberewbc:FinancialCounterpartyMemberus-gaap:SwapMemberus-gaap:CommodityContractMember2021-12-310001069157us-gaap:NondesignatedMemberus-gaap:CommodityContractMembersrt:NaturalGasReservesMemberewbc:CustomerCounterpartyMemberus-gaap:CommodityContractMember2021-01-012021-12-310001069157us-gaap:NondesignatedMemberus-gaap:CommodityContractMembersrt:NaturalGasReservesMemberewbc:CustomerCounterpartyMemberus-gaap:CommodityContractMember2021-12-310001069157us-gaap:NondesignatedMemberus-gaap:CommodityContractMembersrt:NaturalGasReservesMemberewbc:FinancialCounterpartyMemberus-gaap:CommodityContractMember2021-01-012021-12-310001069157us-gaap:NondesignatedMemberus-gaap:CommodityContractMembersrt:NaturalGasReservesMemberewbc:FinancialCounterpartyMemberus-gaap:CommodityContractMember2021-12-310001069157us-gaap:NondesignatedMemberus-gaap:CommodityContractMemberewbc:CustomerCounterpartyMemberus-gaap:CommodityContractMember2021-12-310001069157us-gaap:NondesignatedMemberus-gaap:CommodityContractMemberewbc:FinancialCounterpartyMemberus-gaap:CommodityContractMember2021-12-310001069157us-gaap:NondesignatedMembersrt:OilReservesMemberus-gaap:CommodityContractMemberewbc:ChicagoMercantileExchangeCMEMember2022-01-012022-03-310001069157us-gaap:NondesignatedMemberus-gaap:CommodityContractMembersrt:NaturalGasReservesMemberewbc:ChicagoMercantileExchangeCMEMember2022-01-012022-03-310001069157us-gaap:NondesignatedMemberus-gaap:CommodityContractMemberewbc:ChicagoMercantileExchangeCMEMember2022-03-310001069157us-gaap:NondesignatedMembersrt:OilReservesMemberus-gaap:CommodityContractMemberewbc:ChicagoMercantileExchangeCMEMember2021-01-012021-12-310001069157us-gaap:NondesignatedMemberus-gaap:CommodityContractMembersrt:NaturalGasReservesMemberewbc:ChicagoMercantileExchangeCMEMember2021-01-012021-12-310001069157us-gaap:NondesignatedMemberus-gaap:CommodityContractMemberewbc:ChicagoMercantileExchangeCMEMember2021-12-310001069157us-gaap:NondesignatedMemberewbc:InterestratecontractsandotherderivativeincomeMemberus-gaap:InterestRateContractMember2022-01-012022-03-310001069157us-gaap:NondesignatedMemberewbc:InterestratecontractsandotherderivativeincomeMemberus-gaap:InterestRateContractMember2021-01-012021-03-310001069157us-gaap:ForeignExchangeContractMemberus-gaap:NondesignatedMemberus-gaap:ForeignCurrencyGainLossMember2022-01-012022-03-310001069157us-gaap:ForeignExchangeContractMemberus-gaap:NondesignatedMemberus-gaap:ForeignCurrencyGainLossMember2021-01-012021-03-310001069157us-gaap:NondesignatedMemberus-gaap:CreditRiskContractMemberewbc:InterestratecontractsandotherderivativeincomeMember2022-01-012022-03-310001069157us-gaap:NondesignatedMemberus-gaap:CreditRiskContractMemberewbc:InterestratecontractsandotherderivativeincomeMember2021-01-012021-03-310001069157us-gaap:EquityContractMemberus-gaap:NondesignatedMemberewbc:LendingfeesMember2022-01-012022-03-310001069157us-gaap:EquityContractMemberus-gaap:NondesignatedMemberewbc:LendingfeesMember2021-01-012021-03-310001069157us-gaap:NondesignatedMemberus-gaap:CommodityContractMemberewbc:InterestratecontractsandotherderivativeincomeMember2022-01-012022-03-310001069157us-gaap:NondesignatedMemberus-gaap:CommodityContractMemberewbc:InterestratecontractsandotherderivativeincomeMember2021-01-012021-03-310001069157us-gaap:NondesignatedMember2022-01-012022-03-310001069157us-gaap:NondesignatedMember2021-01-012021-03-310001069157ewbc:CreditRiskRelatedContingentFeaturesMember2022-03-310001069157ewbc:CreditRiskRelatedContingentFeaturesMember2021-12-310001069157us-gaap:CommercialPortfolioSegmentMemberewbc:CommercialAndIndustrialLoanMember2022-03-310001069157us-gaap:CommercialPortfolioSegmentMemberewbc:CommercialAndIndustrialLoanMember2021-12-310001069157us-gaap:CommercialRealEstateMemberus-gaap:CommercialPortfolioSegmentMember2022-03-310001069157us-gaap:CommercialRealEstateMemberus-gaap:CommercialPortfolioSegmentMember2021-12-310001069157us-gaap:RealEstateLoanMembersrt:MultifamilyMemberus-gaap:CommercialPortfolioSegmentMember2022-03-310001069157us-gaap:RealEstateLoanMembersrt:MultifamilyMemberus-gaap:CommercialPortfolioSegmentMember2021-12-310001069157us-gaap:CommercialPortfolioSegmentMemberewbc:ConstructionAndLandLoanMember2022-03-310001069157us-gaap:CommercialPortfolioSegmentMemberewbc:ConstructionAndLandLoanMember2021-12-310001069157ewbc:TotalCommercialRealEstateMemberus-gaap:CommercialPortfolioSegmentMember2022-03-310001069157ewbc:TotalCommercialRealEstateMemberus-gaap:CommercialPortfolioSegmentMember2021-12-310001069157us-gaap:CommercialPortfolioSegmentMember2022-03-310001069157us-gaap:CommercialPortfolioSegmentMember2021-12-310001069157us-gaap:RealEstateLoanMemberus-gaap:ConsumerPortfolioSegmentMembersrt:SingleFamilyMember2022-03-310001069157us-gaap:RealEstateLoanMemberus-gaap:ConsumerPortfolioSegmentMembersrt:SingleFamilyMember2021-12-310001069157us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityMember2022-03-310001069157us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityMember2021-12-310001069157ewbc:TotalResidentialMortgageMemberus-gaap:ConsumerPortfolioSegmentMember2022-03-310001069157ewbc:TotalResidentialMortgageMemberus-gaap:ConsumerPortfolioSegmentMember2021-12-310001069157ewbc:OtherConsumerMemberus-gaap:ConsumerPortfolioSegmentMember2022-03-310001069157ewbc:OtherConsumerMemberus-gaap:ConsumerPortfolioSegmentMember2021-12-310001069157us-gaap:ConsumerPortfolioSegmentMember2022-03-310001069157us-gaap:ConsumerPortfolioSegmentMember2021-12-310001069157ewbc:CARESActPaycheckProtectionProgramMemberewbc:CommercialAndIndustrialLoanMember2022-03-310001069157ewbc:CARESActPaycheckProtectionProgramMemberewbc:CommercialAndIndustrialLoanMember2021-12-310001069157us-gaap:PassMemberus-gaap:CommercialPortfolioSegmentMemberewbc:CommercialAndIndustrialLoanMember2022-03-310001069157ewbc:CriticizedAccrualMemberus-gaap:CommercialPortfolioSegmentMemberewbc:CommercialAndIndustrialLoanMember2022-03-310001069157ewbc:CriticizedNonaccrualMemberus-gaap:CommercialPortfolioSegmentMemberewbc:CommercialAndIndustrialLoanMember2022-03-310001069157us-gaap:PassMemberus-gaap:CommercialRealEstateMemberus-gaap:CommercialPortfolioSegmentMember2022-03-310001069157us-gaap:CommercialRealEstateMemberewbc:CriticizedAccrualMemberus-gaap:CommercialPortfolioSegmentMember2022-03-310001069157us-gaap:CommercialRealEstateMemberewbc:CriticizedNonaccrualMemberus-gaap:CommercialPortfolioSegmentMember2022-03-310001069157us-gaap:RealEstateLoanMembersrt:MultifamilyMemberus-gaap:PassMemberus-gaap:CommercialPortfolioSegmentMember2022-03-310001069157us-gaap:RealEstateLoanMembersrt:MultifamilyMemberewbc:CriticizedAccrualMemberus-gaap:CommercialPortfolioSegmentMember2022-03-310001069157us-gaap:RealEstateLoanMembersrt:MultifamilyMemberewbc:CriticizedNonaccrualMemberus-gaap:CommercialPortfolioSegmentMember2022-03-310001069157us-gaap:PassMemberus-gaap:CommercialPortfolioSegmentMemberewbc:ConstructionAndLandLoanMember2022-03-310001069157ewbc:CriticizedAccrualMemberus-gaap:CommercialPortfolioSegmentMemberewbc:ConstructionAndLandLoanMember2022-03-310001069157ewbc:CriticizedNonaccrualMemberus-gaap:CommercialPortfolioSegmentMemberewbc:ConstructionAndLandLoanMember2022-03-310001069157us-gaap:RealEstateLoanMemberus-gaap:PassMemberus-gaap:ConsumerPortfolioSegmentMembersrt:SingleFamilyMember2022-03-310001069157us-gaap:RealEstateLoanMemberewbc:CriticizedAccrualMemberus-gaap:ConsumerPortfolioSegmentMembersrt:SingleFamilyMember2022-03-310001069157us-gaap:RealEstateLoanMemberewbc:CriticizedNonaccrualMemberus-gaap:ConsumerPortfolioSegmentMembersrt:SingleFamilyMember2022-03-310001069157us-gaap:PassMemberus-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityMember2022-03-310001069157ewbc:CriticizedAccrualMemberus-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityMember2022-03-310001069157ewbc:CriticizedNonaccrualMemberus-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityMember2022-03-310001069157us-gaap:PassMemberewbc:OtherConsumerMemberus-gaap:ConsumerPortfolioSegmentMember2022-03-310001069157ewbc:CriticizedAccrualMemberewbc:OtherConsumerMemberus-gaap:ConsumerPortfolioSegmentMember2022-03-310001069157ewbc:CriticizedNonaccrualMemberewbc:OtherConsumerMemberus-gaap:ConsumerPortfolioSegmentMember2022-03-310001069157us-gaap:PassMemberus-gaap:CommercialPortfolioSegmentMemberewbc:CommercialAndIndustrialLoanMember2021-12-310001069157ewbc:CriticizedAccrualMemberus-gaap:CommercialPortfolioSegmentMemberewbc:CommercialAndIndustrialLoanMember2021-12-310001069157ewbc:CriticizedNonaccrualMemberus-gaap:CommercialPortfolioSegmentMemberewbc:CommercialAndIndustrialLoanMember2021-12-310001069157us-gaap:PassMemberus-gaap:CommercialRealEstateMemberus-gaap:CommercialPortfolioSegmentMember2021-12-310001069157us-gaap:CommercialRealEstateMemberewbc:CriticizedAccrualMemberus-gaap:CommercialPortfolioSegmentMember2021-12-310001069157us-gaap:CommercialRealEstateMemberewbc:CriticizedNonaccrualMemberus-gaap:CommercialPortfolioSegmentMember2021-12-310001069157us-gaap:RealEstateLoanMembersrt:MultifamilyMemberus-gaap:PassMemberus-gaap:CommercialPortfolioSegmentMember2021-12-310001069157us-gaap:RealEstateLoanMembersrt:MultifamilyMemberewbc:CriticizedAccrualMemberus-gaap:CommercialPortfolioSegmentMember2021-12-310001069157us-gaap:RealEstateLoanMembersrt:MultifamilyMemberewbc:CriticizedNonaccrualMemberus-gaap:CommercialPortfolioSegmentMember2021-12-310001069157us-gaap:PassMemberus-gaap:CommercialPortfolioSegmentMemberewbc:ConstructionAndLandLoanMember2021-12-310001069157ewbc:CriticizedAccrualMemberus-gaap:CommercialPortfolioSegmentMemberewbc:ConstructionAndLandLoanMember2021-12-310001069157ewbc:CriticizedNonaccrualMemberus-gaap:CommercialPortfolioSegmentMemberewbc:ConstructionAndLandLoanMember2021-12-310001069157us-gaap:RealEstateLoanMemberus-gaap:PassMemberus-gaap:ConsumerPortfolioSegmentMembersrt:SingleFamilyMember2021-12-310001069157us-gaap:RealEstateLoanMemberewbc:CriticizedAccrualMemberus-gaap:ConsumerPortfolioSegmentMembersrt:SingleFamilyMember2021-12-310001069157us-gaap:RealEstateLoanMemberewbc:CriticizedNonaccrualMemberus-gaap:ConsumerPortfolioSegmentMembersrt:SingleFamilyMember2021-12-310001069157us-gaap:PassMemberus-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityMember2021-12-310001069157ewbc:CriticizedAccrualMemberus-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityMember2021-12-310001069157ewbc:CriticizedNonaccrualMemberus-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityMember2021-12-310001069157us-gaap:PassMemberewbc:OtherConsumerMemberus-gaap:ConsumerPortfolioSegmentMember2021-12-310001069157ewbc:CriticizedAccrualMemberewbc:OtherConsumerMemberus-gaap:ConsumerPortfolioSegmentMember2021-12-310001069157ewbc:CriticizedNonaccrualMemberewbc:OtherConsumerMemberus-gaap:ConsumerPortfolioSegmentMember2021-12-310001069157us-gaap:FederalHousingAdministrationLoanMember2022-03-310001069157us-gaap:FederalHousingAdministrationLoanMember2021-12-310001069157ewbc:HELOCsAndorCommercialRealEstateCREMember2022-01-012022-03-31ewbc:loan0001069157us-gaap:HomeEquityMember2021-01-012021-03-310001069157us-gaap:CommercialRealEstateMember2021-01-012021-03-310001069157us-gaap:CommercialPortfolioSegmentMemberus-gaap:FinancialAssetNotPastDueMemberewbc:CommercialAndIndustrialLoanMember2022-03-310001069157us-gaap:FinancingReceivables30To59DaysPastDueMemberus-gaap:CommercialPortfolioSegmentMemberewbc:CommercialAndIndustrialLoanMember2022-03-310001069157us-gaap:FinancingReceivables60To89DaysPastDueMemberus-gaap:CommercialPortfolioSegmentMemberewbc:CommercialAndIndustrialLoanMember2022-03-310001069157us-gaap:CommercialPortfolioSegmentMemberus-gaap:FinancialAssetPastDueMemberewbc:CommercialAndIndustrialLoanMember2022-03-310001069157us-gaap:CommercialRealEstateMemberus-gaap:CommercialPortfolioSegmentMemberus-gaap:FinancialAssetNotPastDueMember2022-03-310001069157us-gaap:FinancingReceivables30To59DaysPastDueMemberus-gaap:CommercialRealEstateMemberus-gaap:CommercialPortfolioSegmentMember2022-03-310001069157us-gaap:FinancingReceivables60To89DaysPastDueMemberus-gaap:CommercialRealEstateMemberus-gaap:CommercialPortfolioSegmentMember2022-03-310001069157us-gaap:CommercialRealEstateMemberus-gaap:CommercialPortfolioSegmentMemberus-gaap:FinancialAssetPastDueMember2022-03-310001069157us-gaap:RealEstateLoanMembersrt:MultifamilyMemberus-gaap:CommercialPortfolioSegmentMemberus-gaap:FinancialAssetNotPastDueMember2022-03-310001069157us-gaap:RealEstateLoanMembersrt:MultifamilyMemberus-gaap:FinancingReceivables30To59DaysPastDueMemberus-gaap:CommercialPortfolioSegmentMember2022-03-310001069157us-gaap:FinancingReceivables60To89DaysPastDueMemberus-gaap:RealEstateLoanMembersrt:MultifamilyMemberus-gaap:CommercialPortfolioSegmentMember2022-03-310001069157us-gaap:RealEstateLoanMembersrt:MultifamilyMemberus-gaap:CommercialPortfolioSegmentMemberus-gaap:FinancialAssetPastDueMember2022-03-310001069157us-gaap:CommercialPortfolioSegmentMemberewbc:ConstructionAndLandLoanMemberus-gaap:FinancialAssetNotPastDueMember2022-03-310001069157us-gaap:FinancingReceivables30To59DaysPastDueMemberus-gaap:CommercialPortfolioSegmentMemberewbc:ConstructionAndLandLoanMember2022-03-310001069157us-gaap:FinancingReceivables60To89DaysPastDueMemberus-gaap:CommercialPortfolioSegmentMemberewbc:ConstructionAndLandLoanMember2022-03-310001069157us-gaap:CommercialPortfolioSegmentMemberewbc:ConstructionAndLandLoanMemberus-gaap:FinancialAssetPastDueMember2022-03-310001069157ewbc:TotalCommercialRealEstateMemberus-gaap:CommercialPortfolioSegmentMemberus-gaap:FinancialAssetNotPastDueMember2022-03-310001069157us-gaap:FinancingReceivables30To59DaysPastDueMemberewbc:TotalCommercialRealEstateMemberus-gaap:CommercialPortfolioSegmentMember2022-03-310001069157us-gaap:FinancingReceivables60To89DaysPastDueMemberewbc:TotalCommercialRealEstateMemberus-gaap:CommercialPortfolioSegmentMember2022-03-310001069157ewbc:TotalCommercialRealEstateMemberus-gaap:CommercialPortfolioSegmentMemberus-gaap:FinancialAssetPastDueMember2022-03-310001069157us-gaap:CommercialPortfolioSegmentMemberus-gaap:FinancialAssetNotPastDueMember2022-03-310001069157us-gaap:FinancingReceivables30To59DaysPastDueMemberus-gaap:CommercialPortfolioSegmentMember2022-03-310001069157us-gaap:FinancingReceivables60To89DaysPastDueMemberus-gaap:CommercialPortfolioSegmentMember2022-03-310001069157us-gaap:CommercialPortfolioSegmentMemberus-gaap:FinancialAssetPastDueMember2022-03-310001069157us-gaap:RealEstateLoanMemberus-gaap:FinancialAssetNotPastDueMemberus-gaap:ConsumerPortfolioSegmentMembersrt:SingleFamilyMember2022-03-310001069157us-gaap:RealEstateLoanMemberus-gaap:FinancingReceivables30To59DaysPastDueMemberus-gaap:ConsumerPortfolioSegmentMembersrt:SingleFamilyMember2022-03-310001069157us-gaap:FinancingReceivables60To89DaysPastDueMemberus-gaap:RealEstateLoanMemberus-gaap:ConsumerPortfolioSegmentMembersrt:SingleFamilyMember2022-03-310001069157us-gaap:RealEstateLoanMemberus-gaap:FinancialAssetPastDueMemberus-gaap:ConsumerPortfolioSegmentMembersrt:SingleFamilyMember2022-03-310001069157us-gaap:FinancialAssetNotPastDueMemberus-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityMember2022-03-310001069157us-gaap:FinancingReceivables30To59DaysPastDueMemberus-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityMember2022-03-310001069157us-gaap:FinancingReceivables60To89DaysPastDueMemberus-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityMember2022-03-310001069157us-gaap:FinancialAssetPastDueMemberus-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityMember2022-03-310001069157ewbc:TotalResidentialMortgageMemberus-gaap:FinancialAssetNotPastDueMemberus-gaap:ConsumerPortfolioSegmentMember2022-03-310001069157us-gaap:FinancingReceivables30To59DaysPastDueMemberewbc:TotalResidentialMortgageMemberus-gaap:ConsumerPortfolioSegmentMember2022-03-310001069157us-gaap:FinancingReceivables60To89DaysPastDueMemberewbc:TotalResidentialMortgageMemberus-gaap:ConsumerPortfolioSegmentMember2022-03-310001069157ewbc:TotalResidentialMortgageMemberus-gaap:FinancialAssetPastDueMemberus-gaap:ConsumerPortfolioSegmentMember2022-03-310001069157ewbc:OtherConsumerMemberus-gaap:FinancialAssetNotPastDueMemberus-gaap:ConsumerPortfolioSegmentMember2022-03-310001069157us-gaap:FinancingReceivables30To59DaysPastDueMemberewbc:OtherConsumerMemberus-gaap:ConsumerPortfolioSegmentMember2022-03-310001069157us-gaap:FinancingReceivables60To89DaysPastDueMemberewbc:OtherConsumerMemberus-gaap:ConsumerPortfolioSegmentMember2022-03-310001069157ewbc:OtherConsumerMemberus-gaap:FinancialAssetPastDueMemberus-gaap:ConsumerPortfolioSegmentMember2022-03-310001069157us-gaap:FinancialAssetNotPastDueMemberus-gaap:ConsumerPortfolioSegmentMember2022-03-310001069157us-gaap:FinancingReceivables30To59DaysPastDueMemberus-gaap:ConsumerPortfolioSegmentMember2022-03-310001069157us-gaap:FinancingReceivables60To89DaysPastDueMemberus-gaap:ConsumerPortfolioSegmentMember2022-03-310001069157us-gaap:FinancialAssetPastDueMemberus-gaap:ConsumerPortfolioSegmentMember2022-03-310001069157us-gaap:FinancialAssetNotPastDueMember2022-03-310001069157us-gaap:FinancingReceivables30To59DaysPastDueMember2022-03-310001069157us-gaap:FinancingReceivables60To89DaysPastDueMember2022-03-310001069157us-gaap:FinancialAssetPastDueMember2022-03-310001069157us-gaap:CommercialPortfolioSegmentMemberus-gaap:FinancialAssetNotPastDueMemberewbc:CommercialAndIndustrialLoanMember2021-12-310001069157us-gaap:FinancingReceivables30To59DaysPastDueMemberus-gaap:CommercialPortfolioSegmentMemberewbc:CommercialAndIndustrialLoanMember2021-12-310001069157us-gaap:FinancingReceivables60To89DaysPastDueMemberus-gaap:CommercialPortfolioSegmentMemberewbc:CommercialAndIndustrialLoanMember2021-12-310001069157us-gaap:CommercialPortfolioSegmentMemberus-gaap:FinancialAssetPastDueMemberewbc:CommercialAndIndustrialLoanMember2021-12-310001069157us-gaap:CommercialRealEstateMemberus-gaap:CommercialPortfolioSegmentMemberus-gaap:FinancialAssetNotPastDueMember2021-12-310001069157us-gaap:FinancingReceivables30To59DaysPastDueMemberus-gaap:CommercialRealEstateMemberus-gaap:CommercialPortfolioSegmentMember2021-12-310001069157us-gaap:FinancingReceivables60To89DaysPastDueMemberus-gaap:CommercialRealEstateMemberus-gaap:CommercialPortfolioSegmentMember2021-12-310001069157us-gaap:CommercialRealEstateMemberus-gaap:CommercialPortfolioSegmentMemberus-gaap:FinancialAssetPastDueMember2021-12-310001069157us-gaap:RealEstateLoanMembersrt:MultifamilyMemberus-gaap:CommercialPortfolioSegmentMemberus-gaap:FinancialAssetNotPastDueMember2021-12-310001069157us-gaap:RealEstateLoanMembersrt:MultifamilyMemberus-gaap:FinancingReceivables30To59DaysPastDueMemberus-gaap:CommercialPortfolioSegmentMember2021-12-310001069157us-gaap:FinancingReceivables60To89DaysPastDueMemberus-gaap:RealEstateLoanMembersrt:MultifamilyMemberus-gaap:CommercialPortfolioSegmentMember2021-12-310001069157us-gaap:RealEstateLoanMembersrt:MultifamilyMemberus-gaap:CommercialPortfolioSegmentMemberus-gaap:FinancialAssetPastDueMember2021-12-310001069157us-gaap:CommercialPortfolioSegmentMemberewbc:ConstructionAndLandLoanMemberus-gaap:FinancialAssetNotPastDueMember2021-12-310001069157us-gaap:FinancingReceivables30To59DaysPastDueMemberus-gaap:CommercialPortfolioSegmentMemberewbc:ConstructionAndLandLoanMember2021-12-310001069157us-gaap:FinancingReceivables60To89DaysPastDueMemberus-gaap:CommercialPortfolioSegmentMemberewbc:ConstructionAndLandLoanMember2021-12-310001069157us-gaap:CommercialPortfolioSegmentMemberewbc:ConstructionAndLandLoanMemberus-gaap:FinancialAssetPastDueMember2021-12-310001069157ewbc:TotalCommercialRealEstateMemberus-gaap:CommercialPortfolioSegmentMemberus-gaap:FinancialAssetNotPastDueMember2021-12-310001069157us-gaap:FinancingReceivables30To59DaysPastDueMemberewbc:TotalCommercialRealEstateMemberus-gaap:CommercialPortfolioSegmentMember2021-12-310001069157us-gaap:FinancingReceivables60To89DaysPastDueMemberewbc:TotalCommercialRealEstateMemberus-gaap:CommercialPortfolioSegmentMember2021-12-310001069157ewbc:TotalCommercialRealEstateMemberus-gaap:CommercialPortfolioSegmentMemberus-gaap:FinancialAssetPastDueMember2021-12-310001069157us-gaap:CommercialPortfolioSegmentMemberus-gaap:FinancialAssetNotPastDueMember2021-12-310001069157us-gaap:FinancingReceivables30To59DaysPastDueMemberus-gaap:CommercialPortfolioSegmentMember2021-12-310001069157us-gaap:FinancingReceivables60To89DaysPastDueMemberus-gaap:CommercialPortfolioSegmentMember2021-12-310001069157us-gaap:CommercialPortfolioSegmentMemberus-gaap:FinancialAssetPastDueMember2021-12-310001069157us-gaap:RealEstateLoanMemberus-gaap:FinancialAssetNotPastDueMemberus-gaap:ConsumerPortfolioSegmentMembersrt:SingleFamilyMember2021-12-310001069157us-gaap:RealEstateLoanMemberus-gaap:FinancingReceivables30To59DaysPastDueMemberus-gaap:ConsumerPortfolioSegmentMembersrt:SingleFamilyMember2021-12-310001069157us-gaap:FinancingReceivables60To89DaysPastDueMemberus-gaap:RealEstateLoanMemberus-gaap:ConsumerPortfolioSegmentMembersrt:SingleFamilyMember2021-12-310001069157us-gaap:RealEstateLoanMemberus-gaap:FinancialAssetPastDueMemberus-gaap:ConsumerPortfolioSegmentMembersrt:SingleFamilyMember2021-12-310001069157us-gaap:FinancialAssetNotPastDueMemberus-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityMember2021-12-310001069157us-gaap:FinancingReceivables30To59DaysPastDueMemberus-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityMember2021-12-310001069157us-gaap:FinancingReceivables60To89DaysPastDueMemberus-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityMember2021-12-310001069157us-gaap:FinancialAssetPastDueMemberus-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityMember2021-12-310001069157ewbc:TotalResidentialMortgageMemberus-gaap:FinancialAssetNotPastDueMemberus-gaap:ConsumerPortfolioSegmentMember2021-12-310001069157us-gaap:FinancingReceivables30To59DaysPastDueMemberewbc:TotalResidentialMortgageMemberus-gaap:ConsumerPortfolioSegmentMember2021-12-310001069157us-gaap:FinancingReceivables60To89DaysPastDueMemberewbc:TotalResidentialMortgageMemberus-gaap:ConsumerPortfolioSegmentMember2021-12-310001069157ewbc:TotalResidentialMortgageMemberus-gaap:FinancialAssetPastDueMemberus-gaap:ConsumerPortfolioSegmentMember2021-12-310001069157ewbc:OtherConsumerMemberus-gaap:FinancialAssetNotPastDueMemberus-gaap:ConsumerPortfolioSegmentMember2021-12-310001069157us-gaap:FinancingReceivables30To59DaysPastDueMemberewbc:OtherConsumerMemberus-gaap:ConsumerPortfolioSegmentMember2021-12-310001069157us-gaap:FinancingReceivables60To89DaysPastDueMemberewbc:OtherConsumerMemberus-gaap:ConsumerPortfolioSegmentMember2021-12-310001069157ewbc:OtherConsumerMemberus-gaap:FinancialAssetPastDueMemberus-gaap:ConsumerPortfolioSegmentMember2021-12-310001069157us-gaap:FinancialAssetNotPastDueMemberus-gaap:ConsumerPortfolioSegmentMember2021-12-310001069157us-gaap:FinancingReceivables30To59DaysPastDueMemberus-gaap:ConsumerPortfolioSegmentMember2021-12-310001069157us-gaap:FinancingReceivables60To89DaysPastDueMemberus-gaap:ConsumerPortfolioSegmentMember2021-12-310001069157us-gaap:FinancialAssetPastDueMemberus-gaap:ConsumerPortfolioSegmentMember2021-12-310001069157us-gaap:FinancialAssetNotPastDueMember2021-12-310001069157us-gaap:FinancingReceivables30To59DaysPastDueMember2021-12-310001069157us-gaap:FinancingReceivables60To89DaysPastDueMember2021-12-310001069157us-gaap:FinancialAssetPastDueMember2021-12-310001069157us-gaap:ResidentialRealEstateMember2022-03-310001069157us-gaap:ResidentialRealEstateMember2021-12-310001069157us-gaap:CommercialPortfolioSegmentMemberewbc:CommercialAndIndustrialLoanMember2022-01-012022-03-310001069157us-gaap:CommercialPortfolioSegmentMemberewbc:CommercialAndIndustrialLoanMember2021-01-012021-03-310001069157ewbc:PrincipalForbearancePaymentsTermExtensionsPrincipalDefermentsMemberus-gaap:CommercialPortfolioSegmentMemberewbc:CommercialAndIndustrialLoanMember2022-01-012022-03-310001069157ewbc:PrincipalForbearancePaymentsTermExtensionsPrincipalDefermentsMemberus-gaap:CommercialPortfolioSegmentMemberewbc:CommercialAndIndustrialLoanMember2021-01-012021-03-310001069157ewbc:PrincipalForbearancePaymentsTermExtensionsPrincipalDefermentsMember2022-01-012022-03-310001069157ewbc:PrincipalForbearancePaymentsTermExtensionsPrincipalDefermentsMember2021-01-012021-03-310001069157us-gaap:CommercialRealEstateMemberus-gaap:CommercialPortfolioSegmentMember2022-01-012022-03-310001069157us-gaap:RealEstateLoanMembersrt:MultifamilyMemberus-gaap:CommercialPortfolioSegmentMember2022-01-012022-03-310001069157us-gaap:CommercialPortfolioSegmentMemberewbc:ConstructionAndLandLoanMember2022-01-012022-03-310001069157us-gaap:RealEstateLoanMemberus-gaap:ConsumerPortfolioSegmentMembersrt:SingleFamilyMember2022-01-012022-03-310001069157us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityMember2022-01-012022-03-310001069157ewbc:OtherConsumerMemberus-gaap:ConsumerPortfolioSegmentMember2022-01-012022-03-310001069157us-gaap:CommercialPortfolioSegmentMemberewbc:CommercialAndIndustrialLoanMember2020-12-310001069157us-gaap:CommercialRealEstateMemberus-gaap:CommercialPortfolioSegmentMember2020-12-310001069157us-gaap:RealEstateLoanMembersrt:MultifamilyMemberus-gaap:CommercialPortfolioSegmentMember2020-12-310001069157us-gaap:CommercialPortfolioSegmentMemberewbc:ConstructionAndLandLoanMember2020-12-310001069157us-gaap:RealEstateLoanMemberus-gaap:ConsumerPortfolioSegmentMembersrt:SingleFamilyMember2020-12-310001069157us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityMember2020-12-310001069157ewbc:OtherConsumerMemberus-gaap:ConsumerPortfolioSegmentMember2020-12-310001069157us-gaap:CommercialRealEstateMemberus-gaap:CommercialPortfolioSegmentMember2021-01-012021-03-310001069157us-gaap:RealEstateLoanMembersrt:MultifamilyMemberus-gaap:CommercialPortfolioSegmentMember2021-01-012021-03-310001069157us-gaap:CommercialPortfolioSegmentMemberewbc:ConstructionAndLandLoanMember2021-01-012021-03-310001069157us-gaap:RealEstateLoanMemberus-gaap:ConsumerPortfolioSegmentMembersrt:SingleFamilyMember2021-01-012021-03-310001069157us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityMember2021-01-012021-03-310001069157ewbc:OtherConsumerMemberus-gaap:ConsumerPortfolioSegmentMember2021-01-012021-03-310001069157us-gaap:CommercialPortfolioSegmentMemberewbc:CommercialAndIndustrialLoanMember2021-03-310001069157us-gaap:CommercialRealEstateMemberus-gaap:CommercialPortfolioSegmentMember2021-03-310001069157us-gaap:RealEstateLoanMembersrt:MultifamilyMemberus-gaap:CommercialPortfolioSegmentMember2021-03-310001069157us-gaap:CommercialPortfolioSegmentMemberewbc:ConstructionAndLandLoanMember2021-03-310001069157us-gaap:RealEstateLoanMemberus-gaap:ConsumerPortfolioSegmentMembersrt:SingleFamilyMember2021-03-310001069157us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityMember2021-03-310001069157ewbc:OtherConsumerMemberus-gaap:ConsumerPortfolioSegmentMember2021-03-310001069157us-gaap:UnfundedLoanCommitmentMember2021-12-310001069157us-gaap:UnfundedLoanCommitmentMember2020-12-310001069157us-gaap:UnfundedLoanCommitmentMember2022-01-012022-03-310001069157us-gaap:UnfundedLoanCommitmentMember2021-01-012021-03-310001069157us-gaap:UnfundedLoanCommitmentMember2022-03-310001069157us-gaap:UnfundedLoanCommitmentMember2021-03-310001069157us-gaap:RealEstateLoanMemberewbc:SingleFamilyResidentialMember2022-03-310001069157ewbc:SingleFamilyResidentialMember2021-12-310001069157ewbc:CommercialAndIndustrialLoanMemberewbc:LoansReceivableOriginatedMember2022-01-012022-03-310001069157ewbc:CommercialAndIndustrialLoanMemberewbc:LoansReceivableOriginatedMember2021-01-012021-03-310001069157ewbc:LoansSoldInSecondaryMarketMemberewbc:LoansReceivablePurchasedMember2022-01-012022-03-310001069157ewbc:LoansSoldInSecondaryMarketMemberewbc:LoansReceivablePurchasedMember2021-01-012021-03-310001069157ewbc:InvestmentsInTaxCreditAndOtherInvestmentsNetMember2022-03-310001069157ewbc:InvestmentsInTaxCreditAndOtherInvestmentsNetMember2021-12-310001069157ewbc:InvestmentsInTaxCreditAndOtherInvestmentsNetAndOtherAssetsMember2022-03-310001069157ewbc:InvestmentsInTaxCreditAndOtherInvestmentsNetAndOtherAssetsMember2021-12-310001069157ewbc:InvestmentInTaxCreditAndOtherInvestmentsMember2022-01-012022-03-310001069157ewbc:InvestmentInTaxCreditAndOtherInvestmentsMember2021-01-012021-03-310001069157us-gaap:AvailableforsaleSecuritiesMemberus-gaap:CollateralizedLoanObligationsMember2022-03-310001069157us-gaap:AvailableforsaleSecuritiesMemberus-gaap:CollateralizedLoanObligationsMember2021-12-310001069157us-gaap:LoanOriginationCommitmentsMember2022-03-310001069157us-gaap:LoanOriginationCommitmentsMember2021-12-310001069157us-gaap:LetterOfCreditMember2022-03-310001069157us-gaap:LetterOfCreditMember2021-12-310001069157us-gaap:CommitmentsToExtendCreditMember2022-03-310001069157us-gaap:CommitmentsToExtendCreditMember2021-12-310001069157us-gaap:StandbyLettersOfCreditMember2022-03-310001069157ewbc:CommercialLettersOfCreditMember2022-03-310001069157us-gaap:StandbyLettersOfCreditMember2021-12-310001069157ewbc:CommercialLettersOfCreditMember2021-12-310001069157ewbc:LoansSoldorSecuritizedWithRecourseMemberewbc:SingleFamilyResidentialMemberus-gaap:GuaranteeObligationsMember2022-03-310001069157ewbc:LoansSoldorSecuritizedWithRecourseMemberewbc:SingleFamilyResidentialMemberus-gaap:GuaranteeObligationsMember2021-12-310001069157ewbc:LoansSoldorSecuritizedWithRecourseMemberewbc:MultifamilyResidentialMemberus-gaap:GuaranteeObligationsMember2022-03-310001069157ewbc:LoansSoldorSecuritizedWithRecourseMemberewbc:MultifamilyResidentialMemberus-gaap:GuaranteeObligationsMember2021-12-310001069157ewbc:LoansSoldorSecuritizedWithRecourseMemberus-gaap:GuaranteeObligationsMember2022-03-310001069157ewbc:LoansSoldorSecuritizedWithRecourseMemberus-gaap:GuaranteeObligationsMember2021-12-310001069157ewbc:LoansSoldorSecuritizedWithRecourseMemberewbc:SingleFamilyResidentialAndMultiFamilyResidentialMemberus-gaap:GuaranteeObligationsMember2022-03-310001069157ewbc:LoansSoldorSecuritizedWithRecourseMemberewbc:SingleFamilyResidentialAndMultiFamilyResidentialMemberus-gaap:GuaranteeObligationsMember2021-12-310001069157ewbc:AccruedExpensesAndOtherLiabilitiesMember2022-03-310001069157ewbc:AccruedExpensesAndOtherLiabilitiesMember2021-12-310001069157ewbc:CliffVestingMemberus-gaap:RestrictedStockUnitsRSUMember2022-01-012022-03-310001069157ewbc:PerformanceBasedRestrictedStockSettledinStockMembersrt:MinimumMember2022-01-012022-03-310001069157ewbc:PerformanceBasedRestrictedStockSettledinStockMembersrt:MaximumMember2022-01-012022-03-310001069157ewbc:PerformanceBasedRestrictedStockSettledinStockMemberewbc:CliffVestingMember2022-01-012022-03-310001069157ewbc:TimeBasedRestrictedStockSettledinStockMember2022-01-012022-03-31ewbc:employee0001069157ewbc:TimeBasedRestrictedStockSettledinStockMember2021-12-310001069157ewbc:PerformanceBasedRestrictedStockSettledinStockMember2021-12-310001069157ewbc:PerformanceBasedRestrictedStockSettledinStockMember2022-01-012022-03-310001069157ewbc:TimeBasedRestrictedStockSettledinStockMember2022-03-310001069157ewbc:PerformanceBasedRestrictedStockSettledinStockMember2022-03-310001069157ewbc:TimeBasedRestrictedStockSettledinCashMember2022-01-012022-03-310001069157ewbc:TimeBasedRestrictedStockSettledinCashMember2021-12-310001069157ewbc:TimeBasedRestrictedStockSettledinCashMember2022-03-310001069157us-gaap:RestrictedStockUnitsRSUMember2022-01-012022-03-310001069157us-gaap:RestrictedStockUnitsRSUMember2021-01-012021-03-310001069157us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember2020-12-310001069157us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember2020-12-310001069157us-gaap:AccumulatedTranslationAdjustmentMember2020-12-310001069157us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember2021-01-012021-03-310001069157us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember2021-01-012021-03-310001069157us-gaap:AccumulatedTranslationAdjustmentMember2021-01-012021-03-310001069157us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember2021-03-310001069157us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember2021-03-310001069157us-gaap:AccumulatedTranslationAdjustmentMember2021-03-310001069157us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember2021-12-310001069157us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember2021-12-310001069157us-gaap:AccumulatedTranslationAdjustmentMember2021-12-310001069157us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember2022-01-012022-03-310001069157us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember2022-01-012022-03-310001069157us-gaap:AccumulatedTranslationAdjustmentMember2022-01-012022-03-310001069157us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember2022-03-310001069157us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember2022-03-310001069157us-gaap:AccumulatedTranslationAdjustmentMember2022-03-31ewbc:segment0001069157ewbc:ConsumerandBusinessBankingMember2022-01-012022-03-310001069157ewbc:CommercialBankingMember2022-01-012022-03-310001069157us-gaap:AllOtherSegmentsMember2022-01-012022-03-310001069157ewbc:ConsumerandBusinessBankingMember2022-03-310001069157ewbc:CommercialBankingMember2022-03-310001069157us-gaap:AllOtherSegmentsMember2022-03-310001069157ewbc:ConsumerandBusinessBankingMember2021-01-012021-03-310001069157ewbc:CommercialBankingMember2021-01-012021-03-310001069157us-gaap:AllOtherSegmentsMember2021-01-012021-03-310001069157ewbc:ConsumerandBusinessBankingMember2021-03-310001069157ewbc:CommercialBankingMember2021-03-310001069157us-gaap:AllOtherSegmentsMember2021-03-31

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM 10-Q

QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF
THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended March 31, 2022

or

TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF
THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from to

Commission file number 000-24939

EAST WEST BANCORP, INC.
(Exact name of registrant as specified in its charter)

Delaware
(State or other jurisdiction of incorporation or organization)

95-4703316
(I.R.S. Employer Identification No.)

135 North Los Robles Ave., 7th Floor, Pasadena, California 91101
(Address of principal executive offices) (Zip Code)

Registrant’s telephone number, including area code:
(626768-6000

Securities registered pursuant to Section 12(b) of the Act: 
Title of each classTrading
Symbol(s)
Name of each exchange
 on which registered
Common Stock, par value $0.001 per shareEWBCThe Nasdaq Global Select Market

    Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.
Yes No

    Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).
Yes No

    Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.
Large accelerated filerAccelerated filer
Non-accelerated filerSmaller reporting company
Emerging growth company

    If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.

    Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).
Yes  No 
    Number of shares outstanding of the issuer’s common stock on the latest practicable date: 141,908,444 shares as of April 30, 2022.



TABLE OF CONTENTS
Page
2


PART I — FINANCIAL INFORMATION
ITEM 1. CONSOLIDATED FINANCIAL STATEMENTS

EAST WEST BANCORP, INC. AND SUBSIDIARIES
CONSOLIDATED BALANCE SHEET
($ in thousands, except shares)
(Unaudited)
March 31,
2022
December 31,
2021
(Unaudited)
ASSETS
Cash and due from banks$571,571 $527,317 
Interest-bearing cash with banks3,277,129 3,385,618 
Cash and cash equivalents3,848,700 3,912,935 
Interest-bearing deposits with banks816,125 736,492 
Assets purchased under resale agreements (“resale agreements”)1,956,822 2,353,503 
Securities:
Available-for-sale (“AFS”) debt securities, at fair value (amortized cost of $7,091,581 and $10,087,179)
6,729,431 9,965,353 
Held-to-maturity (“HTM”) debt securities, at amortized cost (fair value of $2,815,968)
2,997,702  
Loans held-for-sale631 635 
Loans held-for-investment (net of allowance for loan losses of $545,685 and $541,579)
42,944,997 41,152,202 
Investments in qualified affordable housing partnerships, tax credit and other investments, net607,985 628,263 
Premises and equipment (net of accumulated depreciation of $141,422 and $139,358)
95,898 97,302 
Goodwill465,697 465,697 
Operating lease right-of-use assets102,491 98,632 
Other assets1,674,977 1,459,687 
TOTAL$62,241,456 $60,870,701 
LIABILITIES
Deposits:
Noninterest-bearing$24,927,768 $22,845,464 
Interest-bearing30,010,593 30,505,068 
Total deposits54,938,361 53,350,532 
Federal Home Loan Bank (“FHLB”) advances74,619 249,331 
Assets sold under repurchase agreements (“repurchase agreements”)300,000 300,000 
Long-term debt and finance lease liabilities152,227 151,997 
Operating lease liabilities109,656 105,534 
Accrued expenses and other liabilities963,137 876,089 
Total liabilities56,538,000 55,033,483 
COMMITMENTS AND CONTINGENCIES (Note 10)
STOCKHOLDERS’ EQUITY
Common stock, $0.001 par value, 200,000,000 shares authorized; 168,375,288 and 167,790,645 shares issued
168 168 
Additional paid-in capital1,902,874 1,893,557 
Retained earnings4,863,721 4,683,659 
Treasury stock, at cost 26,118,768 and 25,882,691 shares
(668,382)(649,785)
Accumulated other comprehensive loss (“AOCI”), net of tax(394,925)(90,381)
Total stockholders’ equity5,703,456 5,837,218 
TOTAL$62,241,456 $60,870,701 
See accompanying Notes to Consolidated Financial Statements.

3


EAST WEST BANCORP, INC. AND SUBSIDIARIES
CONSOLIDATED STATEMENT OF INCOME
($ and shares in thousands, except per share data)
(Unaudited)
Three Months Ended March 31,
20222021
INTEREST AND DIVIDEND INCOME
Loans receivable, including fees$377,110 $342,008 
Debt securities42,667 29,100 
Resale agreements8,383 6,099 
Restricted equity securities609 547 
Interest-bearing cash and deposits with banks3,260 3,632 
Total interest and dividend income432,029 381,386 
INTEREST EXPENSE
Deposits12,989 21,822 
Short-term borrowings
9 42 
FHLB advances578 3,069 
Repurchase agreements2,016 1,978 
Long-term debt and finance lease liabilities824 780 
Total interest expense16,416 27,691 
Net interest income before provision for credit losses415,613 353,695 
Provision for credit losses8,000  
Net interest income after provision for credit losses407,613 353,695 
NONINTEREST INCOME
Lending fees19,438 18,357 
Deposit account fees20,315 15,383 
Interest rate contracts and other derivative income11,133 16,997 
Foreign exchange income12,699 9,526 
Wealth management fees6,052 6,911 
Net gains on sales of loans2,922 1,781 
Gains on sales of AFS debt securities1,278 192 
Other investment income1,627 925 
Other income4,279 2,794 
Total noninterest income79,743 72,866 
NONINTEREST EXPENSE
Compensation and employee benefits116,269 107,808 
Occupancy and equipment expense15,464 15,922 
Deposit insurance premiums and regulatory assessments4,717 3,876 
Deposit account expense4,693 3,892 
Data processing3,665 4,478 
Computer software expense7,294 7,159 
Consulting expense1,833 1,475 
Legal expense718 1,502 
Other operating expense20,897 19,607 
Amortization of tax credit and other investments13,900 25,358 
Total noninterest expense189,450 191,077 
INCOME BEFORE INCOME TAXES297,906 235,484 
INCOME TAX EXPENSE60,254 30,490 
NET INCOME$237,652 $204,994 
EARNINGS PER SHARE (“EPS”)
BASIC$1.67 $1.45 
DILUTED$1.66 $1.44 
WEIGHTED-AVERAGE NUMBER OF SHARES OUTSTANDING
BASIC142,025 141,646 
DILUTED143,223 142,844 
See accompanying Notes to Consolidated Financial Statements.

4


EAST WEST BANCORP, INC. AND SUBSIDIARIES
CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME
($ in thousands)
(Unaudited)
Three Months Ended March 31,
20222021
Net income$237,652 $204,994 
Other comprehensive (loss) income, net of tax:
Net changes in unrealized losses on AFS debt securities(169,270)(133,448)
Net changes in unrealized losses on securities transferred from AFS to HTM(110,680) 
Net changes in unrealized (losses) gains on cash flow hedges(24,723)432 
Foreign currency translation adjustments129 (1,349)
Other comprehensive loss(304,544)(134,365)
COMPREHENSIVE (LOSS) INCOME$(66,892)$70,629 
See accompanying Notes to Consolidated Financial Statements.

5


EAST WEST BANCORP, INC. AND SUBSIDIARIES
CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS’ EQUITY
($ in thousands, except shares)
(Unaudited)

Common Stock and
Additional Paid-in Capital
Retained EarningsTreasury StockAOCI,
Net of Tax
Total
Stockholders’ Equity
SharesAmount
BALANCE, JANUARY 1, 2021141,565,229 $1,858,519 $4,000,414 $(634,083)$44,325 $5,269,175 
Net income— — 204,994 — — 204,994 
Other comprehensive loss— — — — (134,365)(134,365)
Issuance of common stock pursuant to various stock compensation plans and agreements475,733 7,582 — — — 7,582 
Repurchase of common stock pursuant to various stock compensation plans and agreements(197,926)— — (14,983)— (14,983)
Cash dividends on common stock ($0.33 per share)
— — (47,376)— — (47,376)
BALANCE, MARCH 31, 2021141,843,036 $1,866,101 $4,158,032 $(649,066)$(90,040)$5,285,027 
BALANCE, JANUARY 1, 2022141,907,954 $1,893,725 $4,683,659 $(649,785)$(90,381)$5,837,218 
Net income— — 237,652 — — 237,652 
Other comprehensive loss— — — — (304,544)(304,544)
Issuance of common stock pursuant to various stock compensation plans and agreements588,114 9,317 — — — 9,317 
Repurchase of common stock pursuant to various stock compensation plans and agreements(239,548)— — (18,597)— (18,597)
Cash dividends on common stock ($0.40 per share)
— — (57,590)— — (57,590)
BALANCE, MARCH 31, 2022142,256,520 $1,903,042 $4,863,721 $(668,382)$(394,925)$5,703,456 

See accompanying Notes to Consolidated Financial Statements.

6


EAST WEST BANCORP, INC. AND SUBSIDIARIES
CONSOLIDATED STATEMENT OF CASH FLOWS
($ in thousands)
(Unaudited)
Three Months Ended March 31,
20222021
CASH FLOWS FROM OPERATING ACTIVITIES
Net income $237,652 $204,994 
Adjustments to reconcile net income to net cash provided by operating activities:  
Depreciation and amortization 26,555 37,490 
Amortization of premiums and accretion of discount, net11,824 5,770 
Stock compensation costs8,433 7,817 
Deferred income tax (expense) benefit(7,083)224 
Provision for credit losses8,000  
Net gains on sales of loans(2,922)(1,781)
Gains on sales of AFS debt securities(1,278)(192)
Loans held-for-sale:
Originations and purchases(447)(5,718)
Proceeds from sales and paydowns/payoffs of loans originally classified as held-for-sale461 7,644 
Proceeds from distributions received from equity method investees3,227 2,505 
Net change in accrued interest receivable and other assets (81,628)185,503 
Net change in accrued expenses and other liabilities83,042 (101,574)
Other net operating activities49 20 
Total adjustments 48,233 137,708 
Net cash provided by operating activities285,885 342,702 
CASH FLOWS FROM INVESTING ACTIVITIES  
Net (increase) decrease in:  
Investments in qualified affordable housing partnerships, tax credit and other investments(32,853)(52,756)
Interest-bearing deposits with banks(79,633)67,793 
Resale agreements:
Proceeds from paydowns and maturities554,932 223,952 
Purchases(158,251)(923,990)
AFS debt securities:
Proceeds from sales103,945 46,397 
Proceeds from repayments, maturities and redemptions446,301 473,808 
Purchases(746,855)(2,969,640)
HTM debt securities:
Proceeds from repayments, maturities and redemptions15,448  
Loans held-for-investment:
Proceeds from sales of loans originally classified as held-for-investment135,517 147,115 
Purchases(225,065)(311,030)
Other changes in loans held-for-investment, net(1,697,590)(1,047,557)
Proceeds from distributions received from equity method investees4,348 2,832 
Other net investing activities(2,758)(2,870)
Net cash used in investing activities(1,682,514)(4,345,946)
See accompanying Notes to Consolidated Financial Statements.

7


EAST WEST BANCORP, INC. AND SUBSIDIARIES
CONSOLIDATED STATEMENT OF CASH FLOWS
($ in thousands)
(Unaudited)
(Continued)

Three Months Ended March 31,
20222021
CASH FLOWS FROM FINANCING ACTIVITIES  
Net increase in deposits1,584,344 4,690,658 
Net decrease in short-term borrowings(31)(21,143)
FHLB advances:
Proceeds 100  
Repayment(175,100) 
Long-term debt and lease liabilities:
Repayment of long-term debt and lease liabilities(229)(315)
Common stock:
Stocks tendered for payment of withholding taxes(18,597)(14,983)
Cash dividends paid(58,900)(