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CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Per Share data, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
INTEREST AND DIVIDEND INCOME |  |  |
Loans receivable, including fees | $ 1,059,205 us-gaap_InterestAndFeeIncomeLoansAndLeases | $ 979,394 us-gaap_InterestAndFeeIncomeLoansAndLeases | $ 945,530 us-gaap_InterestAndFeeIncomeLoansAndLeases
Investment securities | 44,684 us-gaap_InterestAndDividendIncomeSecurities | 43,846 us-gaap_InterestAndDividendIncomeSecurities | 58,184 us-gaap_InterestAndDividendIncomeSecurities
Securities purchased under resale agreements | 20,323 us-gaap_InterestIncomeSecuritiesPurchasedUnderAgreementsToResell | 21,236 us-gaap_InterestIncomeSecuritiesPurchasedUnderAgreementsToResell | 20,392 us-gaap_InterestIncomeSecuritiesPurchasedUnderAgreementsToResell
Investment in Federal Home Loan Bank and Federal Reserve Bank stock | 6,272 ewbc_InvestmentInFederalHomeLoanBankAndFederalReserveBankStock | 6,869 ewbc_InvestmentInFederalHomeLoanBankAndFederalReserveBankStock | 4,673 ewbc_InvestmentInFederalHomeLoanBankAndFederalReserveBankStock
Due from banks and short-term investments | 23,214 ewbc_ShortTermInvestmentsAsPresentedInStatementsOfIncome | 17,340 ewbc_ShortTermInvestmentsAsPresentedInStatementsOfIncome | 22,316 ewbc_ShortTermInvestmentsAsPresentedInStatementsOfIncome
Total interest and dividend income | 1,153,698 us-gaap_InterestAndDividendIncomeOperating | 1,068,685 us-gaap_InterestAndDividendIncomeOperating | 1,051,095 us-gaap_InterestAndDividendIncomeOperating
INTEREST EXPENSE |  |  |
Customer deposit accounts | 65,486 us-gaap_InterestExpenseDeposits | 63,496 us-gaap_InterestExpenseDeposits | 75,895 us-gaap_InterestExpenseDeposits
Federal Home Loan Bank advances | 4,116 us-gaap_InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesLongTerm | 4,173 us-gaap_InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesLongTerm | 6,248 us-gaap_InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesLongTerm
Securities sold under repurchase agreements | 38,395 us-gaap_InterestExpenseSecuritiesSoldUnderAgreementsToRepurchase | 41,381 us-gaap_InterestExpenseSecuritiesSoldUnderAgreementsToRepurchase | 46,166 us-gaap_InterestExpenseSecuritiesSoldUnderAgreementsToRepurchase
Long-term debt | 4,823 us-gaap_InterestExpenseOtherLongTermDebt | 3,436 us-gaap_InterestExpenseOtherLongTermDebt | 3,855 us-gaap_InterestExpenseOtherLongTermDebt
Other borrowings |  | 6 ewbc_OtherBorrowingsInterestExpense | 4 ewbc_OtherBorrowingsInterestExpense
Total interest expense | 112,820 us-gaap_InterestExpense | 112,492 us-gaap_InterestExpense | 132,168 us-gaap_InterestExpense
Net interest income before provision for loan losses | 1,040,878 us-gaap_InterestIncomeExpenseNet | 956,193 us-gaap_InterestIncomeExpenseNet | 918,927 us-gaap_InterestIncomeExpenseNet
Provision for loan losses on non-covered loans | 44,125 ewbc_ProvisionForLoanLeaseAndOtherLossesNoncovered | 18,336 ewbc_ProvisionForLoanLeaseAndOtherLossesNoncovered | 60,168 ewbc_ProvisionForLoanLeaseAndOtherLossesNoncovered
Provision for loan losses on covered loans | 5,033 ewbc_ProvisionForLoanLeaseAndOtherLossesCovered | 4,028 ewbc_ProvisionForLoanLeaseAndOtherLossesCovered | 5,016 ewbc_ProvisionForLoanLeaseAndOtherLossesCovered
Net interest income after provision for loan losses | 991,720 us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss | 933,829 us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss | 853,743 us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss
NONINTEREST (LOSS) INCOME |  |  |
Impairment loss on investment securities |  |  | (5,165)us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsAvailableforsaleSecurities
Less: Noncredit-related impairment loss recorded in other comprehensive income |  |  | 5,066 us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParentAvailableforsaleSecurities
Net impairment loss on investment securities recognized in earnings |  |  | (99)us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNetAvailableforsaleSecurities
Changes in FDIC indemnification asset and receivable/payable | (201,417)ewbc_ChangesInFdicIndemnificationAssetReceivableOrPayable | (228,585)ewbc_ChangesInFdicIndemnificationAssetReceivableOrPayable | (122,251)ewbc_ChangesInFdicIndemnificationAssetReceivableOrPayable
Branch fees | 37,866 ewbc_BranchFees | 32,036 ewbc_BranchFees | 30,906 ewbc_BranchFees
Net gains on sales of investment securities | 10,851 us-gaap_GainLossOnSaleOfSecuritiesNet | 12,089 us-gaap_GainLossOnSaleOfSecuritiesNet | 757 us-gaap_GainLossOnSaleOfSecuritiesNet
Letters of credit fees and commissions | 25,941 ewbc_FeesAndCommissionsLettersOfCredit | 22,116 ewbc_FeesAndCommissionsLettersOfCredit | 19,104 ewbc_FeesAndCommissionsLettersOfCredit
Ancillary loan fees | 10,616 us-gaap_ServicingFeesNet | 9,368 us-gaap_ServicingFeesNet | 8,831 us-gaap_ServicingFeesNet
Foreign exchange income | 11,381 us-gaap_ForeignCurrencyTransactionGainLossBeforeTax | 12,658 us-gaap_ForeignCurrencyTransactionGainLossBeforeTax | 7,166 us-gaap_ForeignCurrencyTransactionGainLossBeforeTax
Net gains on sales of loans | 39,132 us-gaap_GainLossOnSalesOfLoansNet | 7,750 us-gaap_GainLossOnSalesOfLoansNet | 17,045 us-gaap_GainLossOnSalesOfLoansNet
Dividend and other investment income | 5,464 ewbc_DividendAndOtherInvestmentIncome | 993 ewbc_DividendAndOtherInvestmentIncome | (439)ewbc_DividendAndOtherInvestmentIncome
Other commission and fee income | 29,419 us-gaap_FeesAndCommissionsOther | 20,400 us-gaap_FeesAndCommissionsOther | 16,349 us-gaap_FeesAndCommissionsOther
Other operating income | 19,033 us-gaap_NoninterestIncomeOtherOperatingIncome | 18,707 us-gaap_NoninterestIncomeOtherOperatingIncome | 17,013 us-gaap_NoninterestIncomeOtherOperatingIncome
Total noninterest loss | (11,714)us-gaap_NoninterestIncome | (92,468)us-gaap_NoninterestIncome | (5,618)us-gaap_NoninterestIncome
NONINTEREST EXPENSE |  |  |
Compensation and employee benefits | 231,838 us-gaap_LaborAndRelatedExpense | 175,906 us-gaap_LaborAndRelatedExpense | 171,374 us-gaap_LaborAndRelatedExpense
Occupancy and equipment expense | 63,815 us-gaap_OccupancyNet | 56,641 us-gaap_OccupancyNet | 55,475 us-gaap_OccupancyNet
Amortization of investments in affordable housing partnerships and other tax credit investments | 75,660 ewbc_AmortizationOfInvestmentsInAffordableHousingPartnerships | 27,268 ewbc_AmortizationOfInvestmentsInAffordableHousingPartnerships | 18,058 ewbc_AmortizationOfInvestmentsInAffordableHousingPartnerships
Amortization of premiums on deposits acquired | 10,204 us-gaap_AmortizationOfIntangibleAssets | 9,365 us-gaap_AmortizationOfIntangibleAssets | 10,906 us-gaap_AmortizationOfIntangibleAssets
Deposit insurance premiums and regulatory assessments | 21,922 us-gaap_FederalDepositInsuranceCorporationPremiumExpense | 16,550 us-gaap_FederalDepositInsuranceCorporationPremiumExpense | 14,130 us-gaap_FederalDepositInsuranceCorporationPremiumExpense
Loan related expenses | 3,438 ewbc_LoanProcessingIncomeExpense | 12,520 ewbc_LoanProcessingIncomeExpense | 14,987 ewbc_LoanProcessingIncomeExpense
Other real estate owned (income) expense | (3,591)us-gaap_ForeclosedRealEstateExpense | (1,128)us-gaap_ForeclosedRealEstateExpense | 22,349 us-gaap_ForeclosedRealEstateExpense
Legal expense | 53,018 us-gaap_LegalFees | 31,718 us-gaap_LegalFees | 25,441 us-gaap_LegalFees
Data processing | 15,888 us-gaap_InformationTechnologyAndDataProcessing | 9,095 us-gaap_InformationTechnologyAndDataProcessing | 9,231 us-gaap_InformationTechnologyAndDataProcessing
Other operating expenses | 92,359 us-gaap_OtherNoninterestExpense | 77,576 us-gaap_OtherNoninterestExpense | 80,582 us-gaap_OtherNoninterestExpense
Total noninterest expense | 564,551 us-gaap_NoninterestExpense | 415,511 us-gaap_NoninterestExpense | 422,533 us-gaap_NoninterestExpense
INCOME BEFORE TAXES | 415,455 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments | 425,850 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments | 425,592 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
PROVISION FOR INCOME TAXES | 72,972 us-gaap_IncomeTaxExpenseBenefit | 130,805 us-gaap_IncomeTaxExpenseBenefit | 143,942 us-gaap_IncomeTaxExpenseBenefit
NET INCOME | 342,483 us-gaap_NetIncomeLoss | 295,045 us-gaap_NetIncomeLoss | 281,650 us-gaap_NetIncomeLoss
PREFERRED STOCK DIVIDENDS |  | 3,428 us-gaap_PreferredStockDividendsAndOtherAdjustments | 6,857 us-gaap_PreferredStockDividendsAndOtherAdjustments
NET INCOME AVAILABLE TO COMMON STOCKHOLDERS | $ 342,483 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | $ 291,617 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | $ 274,793 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic
EARNINGS PER SHARE AVAILABLE TO COMMON STOCKHOLDERS |  |  |
BASIC (in dollars per share) | $ 2.39 us-gaap_EarningsPerShareBasic | $ 2.11 us-gaap_EarningsPerShareBasic | $ 1.92 us-gaap_EarningsPerShareBasic
DILUTED (in dollars per share) | $ 2.38 us-gaap_EarningsPerShareDiluted | $ 2.10 us-gaap_EarningsPerShareDiluted | $ 1.89 us-gaap_EarningsPerShareDiluted
WEIGHTED AVERAGE NUMBER OF SHARES OUTSTANDING |  |  |
BASIC (in shares) | 142,952 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 137,342 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 141,457 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
DILUTED (in shares) | 143,563 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding | 139,574 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding | 147,175 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding
DIVIDENDS DECLARED PER COMMON SHARE (in dollars per share) | $ 0.72 us-gaap_CommonStockDividendsPerShareDeclared | $ 0.60 us-gaap_CommonStockDividendsPerShareDeclared | $ 0.40 us-gaap_CommonStockDividendsPerShareDeclared

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- Definition The amortization related to limited partnership interests in projects of affordable housing for lower income tenants and other investments. The investments in which the Company recorded using the cost method are being amortized using the level-yield method over the life of the related tax credits. + References No definition available. + Details
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- Definition The net gain (loss) resulting from a sale of loans, including adjustments to record loans classified as held-for-sale at the lower-of-cost-or-market and fair value adjustments to loan held for investment purposes. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.13(h)) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.3(a)) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 + Details
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