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v2.4.1.9

NON-COVERED LOANS AND ALLOWANCE FOR LOAN LOSSES (Details 9) (USD $) In Thousands, unless otherwise specified | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Restructured loans disclosures |  |  |
Period for which restructured loans remains on nonaccrual status, to demonstrate that the borrower can perform under the restructured terms | 6 months |  |
Non-covered loans |  |  |
Restructured loans disclosures |  |  |
Period for which restructured loans remains on nonaccrual status, to demonstrate that the borrower can perform under the restructured terms | 6 months |  |
Performing loan | Non-covered loans |  |  |
Restructured loans disclosures |  |  |
Loan balance of restructured loans | 68,300 us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_InternalCreditAssessmentAxis = us-gaap_PerformingFinancingReceivableMember / ewbc_ReceivableByIndemnificationStatusAxis = ewbc_NonCoveredLoansMember | $ 71,800 us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_InternalCreditAssessmentAxis = us-gaap_PerformingFinancingReceivableMember / ewbc_ReceivableByIndemnificationStatusAxis = ewbc_NonCoveredLoansMember |
Performing loan | A/B Note Splits | Non-covered loans |  |  |
Restructured loans disclosures |  |  |
Loan balance of restructured loans | 2,900 us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = ewbc_ABNoteSplitsMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PerformingFinancingReceivableMember / ewbc_ReceivableByIndemnificationStatusAxis = ewbc_NonCoveredLoansMember | 4,300 us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = ewbc_ABNoteSplitsMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PerformingFinancingReceivableMember / ewbc_ReceivableByIndemnificationStatusAxis = ewbc_NonCoveredLoansMember |
Nonperforming loan | Non-covered loans |  |  |
Restructured loans disclosures |  |  |
Loan balance of restructured loans | 20,700 us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_InternalCreditAssessmentAxis = us-gaap_NonperformingFinancingReceivableMember / ewbc_ReceivableByIndemnificationStatusAxis = ewbc_NonCoveredLoansMember | 11,100 us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_InternalCreditAssessmentAxis = us-gaap_NonperformingFinancingReceivableMember / ewbc_ReceivableByIndemnificationStatusAxis = ewbc_NonCoveredLoansMember |
CRE | Non-covered loans |  |  |
Restructured loans disclosures |  |  |
Loan balance of restructured loans | 8,600 us-gaap_FinancingReceivableModificationsRecordedInvestment / ewbc_FinancingReceivableInformationByPortfolioSegmentsAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember / ewbc_ReceivableByIndemnificationStatusAxis = ewbc_NonCoveredLoansMember | 17,500 us-gaap_FinancingReceivableModificationsRecordedInvestment / ewbc_FinancingReceivableInformationByPortfolioSegmentsAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember / ewbc_ReceivableByIndemnificationStatusAxis = ewbc_NonCoveredLoansMember | 9,200 us-gaap_FinancingReceivableModificationsRecordedInvestment / ewbc_FinancingReceivableInformationByPortfolioSegmentsAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember / ewbc_ReceivableByIndemnificationStatusAxis = ewbc_NonCoveredLoansMember
CRE | Performing loan | Non-covered loans |  |  |
Restructured loans disclosures |  |  |
Loan balance of restructured loans | 28,400 us-gaap_FinancingReceivableModificationsRecordedInvestment / ewbc_FinancingReceivableInformationByPortfolioSegmentsAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PerformingFinancingReceivableMember / ewbc_ReceivableByIndemnificationStatusAxis = ewbc_NonCoveredLoansMember | 37,600 us-gaap_FinancingReceivableModificationsRecordedInvestment / ewbc_FinancingReceivableInformationByPortfolioSegmentsAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PerformingFinancingReceivableMember / ewbc_ReceivableByIndemnificationStatusAxis = ewbc_NonCoveredLoansMember |
CRE | Nonperforming loan | Non-covered loans |  |  |
Restructured loans disclosures |  |  |
Loan balance of restructured loans | 8,200 us-gaap_FinancingReceivableModificationsRecordedInvestment / ewbc_FinancingReceivableInformationByPortfolioSegmentsAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_NonperformingFinancingReceivableMember / ewbc_ReceivableByIndemnificationStatusAxis = ewbc_NonCoveredLoansMember | 3,400 us-gaap_FinancingReceivableModificationsRecordedInvestment / ewbc_FinancingReceivableInformationByPortfolioSegmentsAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_NonperformingFinancingReceivableMember / ewbc_ReceivableByIndemnificationStatusAxis = ewbc_NonCoveredLoansMember |
C&I | Non-covered loans |  |  |
Restructured loans disclosures |  |  |
Loan balance of restructured loans | 3,200 us-gaap_FinancingReceivableModificationsRecordedInvestment / ewbc_FinancingReceivableInformationByPortfolioSegmentsAxis = us-gaap_CommercialPortfolioSegmentMember / ewbc_ReceivableByIndemnificationStatusAxis = ewbc_NonCoveredLoansMember | 15,600 us-gaap_FinancingReceivableModificationsRecordedInvestment / ewbc_FinancingReceivableInformationByPortfolioSegmentsAxis = us-gaap_CommercialPortfolioSegmentMember / ewbc_ReceivableByIndemnificationStatusAxis = ewbc_NonCoveredLoansMember | 5,000 us-gaap_FinancingReceivableModificationsRecordedInvestment / ewbc_FinancingReceivableInformationByPortfolioSegmentsAxis = us-gaap_CommercialPortfolioSegmentMember / ewbc_ReceivableByIndemnificationStatusAxis = ewbc_NonCoveredLoansMember
C&I | Performing loan | Non-covered loans |  |  |
Restructured loans disclosures |  |  |
Loan balance of restructured loans | 16,200 us-gaap_FinancingReceivableModificationsRecordedInvestment / ewbc_FinancingReceivableInformationByPortfolioSegmentsAxis = us-gaap_CommercialPortfolioSegmentMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PerformingFinancingReceivableMember / ewbc_ReceivableByIndemnificationStatusAxis = ewbc_NonCoveredLoansMember | 16,700 us-gaap_FinancingReceivableModificationsRecordedInvestment / ewbc_FinancingReceivableInformationByPortfolioSegmentsAxis = us-gaap_CommercialPortfolioSegmentMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PerformingFinancingReceivableMember / ewbc_ReceivableByIndemnificationStatusAxis = ewbc_NonCoveredLoansMember |
C&I | Nonperforming loan | Non-covered loans |  |  |
Restructured loans disclosures |  |  |
Loan balance of restructured loans | 5,500 us-gaap_FinancingReceivableModificationsRecordedInvestment / ewbc_FinancingReceivableInformationByPortfolioSegmentsAxis = us-gaap_CommercialPortfolioSegmentMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_NonperformingFinancingReceivableMember / ewbc_ReceivableByIndemnificationStatusAxis = ewbc_NonCoveredLoansMember | 3,500 us-gaap_FinancingReceivableModificationsRecordedInvestment / ewbc_FinancingReceivableInformationByPortfolioSegmentsAxis = us-gaap_CommercialPortfolioSegmentMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_NonperformingFinancingReceivableMember / ewbc_ReceivableByIndemnificationStatusAxis = ewbc_NonCoveredLoansMember |
Residential | Non-covered loans |  |  |
Restructured loans disclosures |  |  |
Loan balance of restructured loans | 12,000 us-gaap_FinancingReceivableModificationsRecordedInvestment / ewbc_FinancingReceivableInformationByPortfolioSegmentsAxis = us-gaap_ResidentialPortfolioSegmentMember / ewbc_ReceivableByIndemnificationStatusAxis = ewbc_NonCoveredLoansMember | 1,100 us-gaap_FinancingReceivableModificationsRecordedInvestment / ewbc_FinancingReceivableInformationByPortfolioSegmentsAxis = us-gaap_ResidentialPortfolioSegmentMember / ewbc_ReceivableByIndemnificationStatusAxis = ewbc_NonCoveredLoansMember | 33,700 us-gaap_FinancingReceivableModificationsRecordedInvestment / ewbc_FinancingReceivableInformationByPortfolioSegmentsAxis = us-gaap_ResidentialPortfolioSegmentMember / ewbc_ReceivableByIndemnificationStatusAxis = ewbc_NonCoveredLoansMember
Residential | Performing loan | Non-covered loans |  |  |
Restructured loans disclosures |  |  |
Loan balance of restructured loans | 22,500 us-gaap_FinancingReceivableModificationsRecordedInvestment / ewbc_FinancingReceivableInformationByPortfolioSegmentsAxis = us-gaap_ResidentialPortfolioSegmentMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PerformingFinancingReceivableMember / ewbc_ReceivableByIndemnificationStatusAxis = ewbc_NonCoveredLoansMember | 17,400 us-gaap_FinancingReceivableModificationsRecordedInvestment / ewbc_FinancingReceivableInformationByPortfolioSegmentsAxis = us-gaap_ResidentialPortfolioSegmentMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PerformingFinancingReceivableMember / ewbc_ReceivableByIndemnificationStatusAxis = ewbc_NonCoveredLoansMember |
Residential | Nonperforming loan | Non-covered loans |  |  |
Restructured loans disclosures |  |  |
Loan balance of restructured loans | 7,000 us-gaap_FinancingReceivableModificationsRecordedInvestment / ewbc_FinancingReceivableInformationByPortfolioSegmentsAxis = us-gaap_ResidentialPortfolioSegmentMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_NonperformingFinancingReceivableMember / ewbc_ReceivableByIndemnificationStatusAxis = ewbc_NonCoveredLoansMember | 3,600 us-gaap_FinancingReceivableModificationsRecordedInvestment / ewbc_FinancingReceivableInformationByPortfolioSegmentsAxis = us-gaap_ResidentialPortfolioSegmentMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_NonperformingFinancingReceivableMember / ewbc_ReceivableByIndemnificationStatusAxis = ewbc_NonCoveredLoansMember |
Consumer | Non-covered loans |  |  |
Restructured loans disclosures |  |  |
Loan balance of restructured loans | 504 us-gaap_FinancingReceivableModificationsRecordedInvestment / ewbc_FinancingReceivableInformationByPortfolioSegmentsAxis = us-gaap_ConsumerPortfolioSegmentMember / ewbc_ReceivableByIndemnificationStatusAxis = ewbc_NonCoveredLoansMember | 639 us-gaap_FinancingReceivableModificationsRecordedInvestment / ewbc_FinancingReceivableInformationByPortfolioSegmentsAxis = us-gaap_ConsumerPortfolioSegmentMember / ewbc_ReceivableByIndemnificationStatusAxis = ewbc_NonCoveredLoansMember | 108 us-gaap_FinancingReceivableModificationsRecordedInvestment / ewbc_FinancingReceivableInformationByPortfolioSegmentsAxis = us-gaap_ConsumerPortfolioSegmentMember / ewbc_ReceivableByIndemnificationStatusAxis = ewbc_NonCoveredLoansMember
Consumer | Performing loan | Non-covered loans |  |  |
Restructured loans disclosures |  |  |
Loan balance of restructured loans | 1,200 us-gaap_FinancingReceivableModificationsRecordedInvestment / ewbc_FinancingReceivableInformationByPortfolioSegmentsAxis = us-gaap_ConsumerPortfolioSegmentMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PerformingFinancingReceivableMember / ewbc_ReceivableByIndemnificationStatusAxis = ewbc_NonCoveredLoansMember | 108 us-gaap_FinancingReceivableModificationsRecordedInvestment / ewbc_FinancingReceivableInformationByPortfolioSegmentsAxis = us-gaap_ConsumerPortfolioSegmentMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PerformingFinancingReceivableMember / ewbc_ReceivableByIndemnificationStatusAxis = ewbc_NonCoveredLoansMember |
Consumer | Nonperforming loan | Non-covered loans |  |  |
Restructured loans disclosures |  |  |
Loan balance of restructured loans | 0 us-gaap_FinancingReceivableModificationsRecordedInvestment / ewbc_FinancingReceivableInformationByPortfolioSegmentsAxis = us-gaap_ConsumerPortfolioSegmentMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_NonperformingFinancingReceivableMember / ewbc_ReceivableByIndemnificationStatusAxis = ewbc_NonCoveredLoansMember | $ 639 us-gaap_FinancingReceivableModificationsRecordedInvestment / ewbc_FinancingReceivableInformationByPortfolioSegmentsAxis = us-gaap_ConsumerPortfolioSegmentMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_NonperformingFinancingReceivableMember / ewbc_ReceivableByIndemnificationStatusAxis = ewbc_NonCoveredLoansMember |

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- Definition The number of consecutive months of payments received from the borrower on a nonperforming restructured loan for it to be considered as demonstrating a sustained period of performance and be removed from nonaccrual status. + References No definition available. + Details
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- Definition The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=25495931&loc=d3e18845-111554 + Details
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