XML 120 R85.htm IDEA: XBRL DOCUMENT
v2.4.0.6

NON COVERED LOANS AND ALLOWANCE FOR LOAN LOSSES (Details) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2011 | Dec. 31, 2010
Non-Covered loans receivable disclosures |  |
Loans receivable, excluding covered loans, gross | $ 10,288,426,000 | $ 8,717,388,000
Unearned fees, premiums and discounts, net | (16,762,000) | (56,781,000)
Allowance for non-covered loans receivable | (209,876,000) | (230,408,000)
Non-covered loans receivable, excluding covered loans, net | 10,061,788,000 | 8,430,199,000
Accrued interest on covered and non-covered loans receivable | 68,500,000 | 65,600,000
Covered and non-covered loans receivable pledged to secure borrowings from the FHLB and the Federal Reserve Bank | 8,650,000,000 | 8,140,000,000
Residential |  |
Non-Covered loans receivable disclosures |  |
Loans receivable, excluding covered loans, gross | 2,729,803,000 | 2,093,769,000
Acquired mortgage loans with variable payment option features | 14,000,000 | 16,900,000
Ratio of mortgage loans with variable payment option features to total mortgage loans within same portfolio category (as a percent) | 1.00% | 1.00%
Residential | Minimum |  |
Non-Covered loans receivable disclosures |  |
Number of units of residential property securing fixed and adjustable rate first mortgage loans | 1 |
Residential | Maximum |  |
Non-Covered loans receivable disclosures |  |
Number of units of residential property securing fixed and adjustable rate first mortgage loans | 4 |
Residential | Single-family |  |
Non-Covered loans receivable disclosures |  |
Loans receivable, excluding covered loans, gross | 1,796,635,000 | 1,119,024,000
New first mortgage loans originated | 924,300,000 | 430,800,000
Mortgage loans with interest-only features | 5,600,000 | 7,800,000
Ratio of mortgage loans with interest-only features to total mortgage loans within same portfolio category (as a percent) | 1.00% | 1.00%
Residential | Multifamily |  |
Non-Covered loans receivable disclosures |  |
Loans receivable, excluding covered loans, gross | 933,168,000 | 974,745,000
New first mortgage loans originated | 47,600,000 | 26,400,000
Residential | Multifamily | Minimum |  |
Non-Covered loans receivable disclosures |  |
Adjustable rate mortgage, term of initial fixed interest rates | 6 months |
Residential | Multifamily | Midrange |  |
Non-Covered loans receivable disclosures |  |
Adjustable rate mortgage, term of initial fixed interest rates | 3 years |
Residential | Multifamily | Maximum |  |
Non-Covered loans receivable disclosures |  |
Adjustable rate mortgage, term of initial fixed interest rates | 5 years |
Commercial Real Estate ("CRE") |  |
Non-Covered loans receivable disclosures |  |
Loans receivable, excluding covered loans, gross | 3,832,365,000 | 3,906,738,000
Commercial Real Estate ("CRE") | Income producing |  |
Non-Covered loans receivable disclosures |  |
Loans receivable, excluding covered loans, gross | 3,487,866,000 | 3,392,984,000
Commercial Real Estate ("CRE") | Construction |  |
Non-Covered loans receivable disclosures |  |
Loans receivable, excluding covered loans, gross | 171,410,000 | 278,047,000
Commercial Real Estate ("CRE") | Land |  |
Non-Covered loans receivable disclosures |  |
Loans receivable, excluding covered loans, gross | 173,089,000 | 235,707,000
Commercial and Industrial ("C&I") |  |
Non-Covered loans receivable disclosures |  |
Loans receivable, excluding covered loans, gross | 3,142,472,000 | 1,983,355,000
Commercial and Industrial ("C&I") | Commercial Business |  |
Non-Covered loans receivable disclosures |  |
Loans receivable, excluding covered loans, gross | 2,655,917,000 | 1,674,698,000
Commercial and Industrial ("C&I") | Trade finance |  |
Non-Covered loans receivable disclosures |  |
Loans receivable, excluding covered loans, gross | 486,555,000 | 308,657,000
Consumer |  |
Non-Covered loans receivable disclosures |  |
Loans receivable, excluding covered loans, gross | 583,786,000 | 733,526,000
Consumer | Student loans |  |
Non-Covered loans receivable disclosures |  |
Loans receivable, excluding covered loans, gross | 306,325,000 | 490,314,000
Consumer | Other Consumer |  |
Non-Covered loans receivable disclosures |  |
Loans receivable, excluding covered loans, gross | $ 277,461,000 | $ 243,212,000

X
- Definition Carrying amount as of the balance sheet date of interest earned on loans receivable but not received. + References No definition available. + Details
Name: | ewbc_AccruedInterestOnLoansReceivable
Namespace Prefix: | ewbc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Total amount of acquired mortgage loans that offer the borrower variable payment option features as of the balance sheet date. + References No definition available. + Details
Name: | ewbc_AcquiredMortgageLoansWithVariablePaymentOptionFeatures
Namespace Prefix: | ewbc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The term for an initial interest rate period of an adjustable rate mortgage. + References No definition available. + Details
Name: | ewbc_AdjustableRateMortgageInitialInterestRatePeriod
Namespace Prefix: | ewbc_
Data Type: | us-types:durationStringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The allowance for non-covered loan losses represents the reserve to cover probable credit losses related to specifically identified loans, as well as probable credit losses inherent in the remainder of the loan portfolio as of the balance sheet date. + References No definition available. + Details
Name: | ewbc_AllowanceForNoncoveredLoansReceivable
Namespace Prefix: | ewbc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Total amount of new first mortgage loans during the reporting period. + References No definition available. + Details
Name: | ewbc_FirstMortgageLoansNewMortgageLoans
Namespace Prefix: | ewbc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Reflects the aggregate carrying amount of loans and leases held in portfolio, net of unearned income and the allowance for losses on loans and leases, excluding covered loans. + References No definition available. + Details
Name: | ewbc_LoansReceivableExcludingCoveredLoans
Namespace Prefix: | ewbc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Total amount of mortgage loans that offer the borrower interest-only features as of the balance sheet date. + References No definition available. + Details
Name: | ewbc_MortgageLoansWithInterestOnlyFeatures
Namespace Prefix: | ewbc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Reflects the gross carrying amount of all categories of non-covered loans held in portfolio. + References No definition available. + Details
Name: | ewbc_NoncoveredLoansReceivableGross
Namespace Prefix: | ewbc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The number of units in residential property that secures both fixed and adjustable rate first mortgage loans. + References No definition available. + Details
Name: | ewbc_NumberOfUnitsForWhichBothFixedAndAdjustableRateFirstMortgageLoansSecured
Namespace Prefix: | ewbc_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition The ratio of mortgage loans within a portfolio category that offer the borrower interest-only features to the total mortgage loans of that portfolio category as of the balance sheet date. + References No definition available. + Details
Name: | ewbc_RatioOfMortgageLoansWithInterestOnlyFeaturesToTotalMortgageLoansWithinTheSamePortfolio
Namespace Prefix: | ewbc_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The ratio of mortgage loans within a portfolio category that offer the borrower variable payment option features to the total mortgage loans of that portfolio category as of the balance sheet date. + References No definition available. + Details
Name: | ewbc_RatioOfMortgageLoansWithVariablePaymentOptionFeaturestoTotalMortgageLoansWithinTheSamePortfolio
Namespace Prefix: | ewbc_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | ewbc_ScheduleOfNonCoveredLoansReceivableLineItems
Namespace Prefix: | ewbc_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Carrying amount as of the balance sheet date of loans that have been pledged as collateral for borrowings. If the secured party has the right by contract or custom to sell or re-pledge the collateral, then the debtor reclassifies that asset and report that asset in its statement of financial position separately from other assets not so encumbered. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 140 -Paragraph 15 -Subparagraph a -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6965416&loc=d3e5086-111524 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6467456&loc=d3e113888-111728 + Details
Name: | us-gaap_LoansPledgedAsCollateral
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Reflects the cumulative amount of fees paid by borrowers which have not yet been taken into income and unamortized costs incurred to originate loans and leases, unamortized loan commitments and loan syndication fees, and premiums over or discounts from face amounts of loans that are being amortized into income as an adjustment to yield. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 91 -Paragraph 21 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6378536&loc=d3e10092-111533 + Details
Name: | us-gaap_UnamortizedLoanCommitmentAndOriginationFeesAndUnamortizedDiscountsOrPremiums
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant