XML 85 R64.htm IDEA: XBRL DOCUMENT
v2.4.0.6

NON-COVERED LOANS AND ALLOWANCE FOR LOAN LOSSES (Details 4) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2013 item | Dec. 31, 2012 item
Credit Quality Indicators |  |
Number of grades in the risk rating system utilized by the company to rate credit risk of loans receivable | 8 |
Maximum term for a loan to stay graded as Special Mention | 6 months |
Number of loss grade loans | 0 | 0
Credit quality indicator disclosures |  |
Loans receivable, excluding covered loans, gross | $ 12,375,028 | $ 11,958,873
Pass/Watch |  |
Credit quality indicator disclosures |  |
Loans receivable, excluding covered loans, gross | 11,680,539 | 11,253,469
Special Mention |  |
Credit quality indicator disclosures |  |
Loans receivable, excluding covered loans, gross | 207,364 | 186,560
Substandard |  |
Credit quality indicator disclosures |  |
Loans receivable, excluding covered loans, gross | 487,125 | 518,844
Residential |  |
Credit quality indicator disclosures |  |
Loans receivable, excluding covered loans, gross | 3,254,133 | 3,088,031
Residential | Residential Single-family |  |
Credit quality indicator disclosures |  |
Loans receivable, excluding covered loans, gross | 2,334,913 | 2,187,323
Residential | Residential Single-family | Pass/Watch |  |
Credit quality indicator disclosures |  |
Loans receivable, excluding covered loans, gross | 2,310,623 | 2,163,918
Residential | Residential Single-family | Special Mention |  |
Credit quality indicator disclosures |  |
Loans receivable, excluding covered loans, gross | 6,278 | 5,131
Residential | Residential Single-family | Substandard |  |
Credit quality indicator disclosures |  |
Loans receivable, excluding covered loans, gross | 18,012 | 18,274
Residential | Residential Multifamily |  |
Credit quality indicator disclosures |  |
Loans receivable, excluding covered loans, gross | 919,220 | 900,708
Residential | Residential Multifamily | Pass/Watch |  |
Credit quality indicator disclosures |  |
Loans receivable, excluding covered loans, gross | 823,560 | 781,552
Residential | Residential Multifamily | Special Mention |  |
Credit quality indicator disclosures |  |
Loans receivable, excluding covered loans, gross | 11,782 | 13,510
Residential | Residential Multifamily | Substandard |  |
Credit quality indicator disclosures |  |
Loans receivable, excluding covered loans, gross | 83,878 | 105,646
Commercial Real Estate ("CRE") |  |
Credit quality indicator disclosures |  |
Loans receivable, excluding covered loans, gross | 3,996,312 | 3,894,695
Commercial Real Estate ("CRE") | Income producing |  |
Credit quality indicator disclosures |  |
Loans receivable, excluding covered loans, gross | 3,754,434 | 3,644,035
Commercial Real Estate ("CRE") | Income producing | Pass/Watch |  |
Credit quality indicator disclosures |  |
Loans receivable, excluding covered loans, gross | 3,522,732 | 3,416,142
Commercial Real Estate ("CRE") | Income producing | Special Mention |  |
Credit quality indicator disclosures |  |
Loans receivable, excluding covered loans, gross | 54,457 | 42,222
Commercial Real Estate ("CRE") | Income producing | Substandard |  |
Credit quality indicator disclosures |  |
Loans receivable, excluding covered loans, gross | 177,245 | 185,671
Commercial Real Estate ("CRE") | Construction |  |
Credit quality indicator disclosures |  |
Loans receivable, excluding covered loans, gross | 129,881 | 121,589
Commercial Real Estate ("CRE") | Construction | Pass/Watch |  |
Credit quality indicator disclosures |  |
Loans receivable, excluding covered loans, gross | 69,511 | 63,008
Commercial Real Estate ("CRE") | Construction | Special Mention |  |
Credit quality indicator disclosures |  |
Loans receivable, excluding covered loans, gross | 16,836 | 16,885
Commercial Real Estate ("CRE") | Construction | Substandard |  |
Credit quality indicator disclosures |  |
Loans receivable, excluding covered loans, gross | 43,534 | 41,696
Commercial Real Estate ("CRE") | Land |  |
Credit quality indicator disclosures |  |
Loans receivable, excluding covered loans, gross | 111,997 | 129,071
Commercial Real Estate ("CRE") | Land | Pass/Watch |  |
Credit quality indicator disclosures |  |
Loans receivable, excluding covered loans, gross | 62,383 | 79,085
Commercial Real Estate ("CRE") | Land | Special Mention |  |
Credit quality indicator disclosures |  |
Loans receivable, excluding covered loans, gross | 13,139 | 13,232
Commercial Real Estate ("CRE") | Land | Substandard |  |
Credit quality indicator disclosures |  |
Loans receivable, excluding covered loans, gross | 36,475 | 36,754
Commercial and Industrial ("C&I") |  |
Credit quality indicator disclosures |  |
Loans receivable, excluding covered loans, gross | 4,280,789 | 4,231,265
Commercial and Industrial ("C&I") | Commercial Business |  |
Credit quality indicator disclosures |  |
Loans receivable, excluding covered loans, gross | 3,588,228 | 3,569,388
Commercial and Industrial ("C&I") | Commercial Business | Pass/Watch |  |
Credit quality indicator disclosures |  |
Loans receivable, excluding covered loans, gross | 3,378,070 | 3,380,212
Commercial and Industrial ("C&I") | Commercial Business | Special Mention |  |
Credit quality indicator disclosures |  |
Loans receivable, excluding covered loans, gross | 94,628 | 69,687
Commercial and Industrial ("C&I") | Commercial Business | Substandard |  |
Credit quality indicator disclosures |  |
Loans receivable, excluding covered loans, gross | 115,530 | 119,489
Commercial and Industrial ("C&I") | Trade finance |  |
Credit quality indicator disclosures |  |
Loans receivable, excluding covered loans, gross | 692,561 | 661,877
Commercial and Industrial ("C&I") | Trade finance | Pass/Watch |  |
Credit quality indicator disclosures |  |
Loans receivable, excluding covered loans, gross | 676,601 | 632,617
Commercial and Industrial ("C&I") | Trade finance | Special Mention |  |
Credit quality indicator disclosures |  |
Loans receivable, excluding covered loans, gross | 8,849 | 24,778
Commercial and Industrial ("C&I") | Trade finance | Substandard |  |
Credit quality indicator disclosures |  |
Loans receivable, excluding covered loans, gross | 7,111 | 4,482
Consumer |  |
Credit quality indicator disclosures |  |
Loans receivable, excluding covered loans, gross | 843,794 | 744,882
Consumer | Student loans |  |
Credit quality indicator disclosures |  |
Loans receivable, excluding covered loans, gross | 562,819 | 475,799
Consumer | Student loans | Pass/Watch |  |
Credit quality indicator disclosures |  |
Loans receivable, excluding covered loans, gross | 562,752 | 475,799
Consumer | Student loans | Special Mention |  |
Credit quality indicator disclosures |  |
Loans receivable, excluding covered loans, gross | 67 |
Consumer | Other Consumer |  |
Credit quality indicator disclosures |  |
Loans receivable, excluding covered loans, gross | 280,975 | 269,083
Consumer | Other Consumer | Pass/Watch |  |
Credit quality indicator disclosures |  |
Loans receivable, excluding covered loans, gross | 274,307 | 261,136
Consumer | Other Consumer | Special Mention |  |
Credit quality indicator disclosures |  |
Loans receivable, excluding covered loans, gross | 1,328 | 1,115
Consumer | Other Consumer | Substandard |  |
Credit quality indicator disclosures |  |
Loans receivable, excluding covered loans, gross | $ 5,340 | $ 6,832

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

X
- Definition The maximum term for which a loan will stay graded as Special Mention since Special Mention is considered a transitory grade. + References No definition available. + Details
Name: | ewbc_MaximumTermLoanGradedSpecialMention
Namespace Prefix: | ewbc_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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 grades in the risk rating system utilized by the company to rate credit risk of loans receivable. Loans are risk rated based on analysis of the current state of the borrower's credit quality. Higher grades represent a higher level of credit risk. + References No definition available. + Details
Name: | ewbc_NumberOfGradesRiskRatingSystem
Namespace Prefix: | ewbc_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents the number of loss grade loans. + References No definition available. + Details
Name: | ewbc_NumberOfLossGradeLoans
Namespace Prefix: | ewbc_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration