XML 96 R69.htm IDEA: XBRL DOCUMENT
v3.2.0.727

LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES (Details 9) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2015 | Jun. 30, 2014 | Jun. 30, 2015 | Jun. 30, 2014 | Dec. 31, 2014
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES |  |  |  |  |  |
Net payable to the FDIC |  | $ 105,100 | $ 24,300 | $ 105,100 | $ 24,300 |
FDIC indemnification asset/(Payable to FDIC, net) |  |  |  |  |  |
Beginning balance |  | (101,411) | 27,552 | (96,106) | 74,708 |
Amortization |  | (1,257) | (29,303) | (2,799) | (57,793) |
Reductions | [1] | (504) | (14,111) | (1,153) | (25,953) |
Estimate of FDIC repayment | [2] | (1,882) | (8,475) | (4,996) | (15,299) |
Ending Balance |  | (105,054) | (24,337) | (105,054) | (24,337) |
Loans Receivable |  |  |  |  |  |
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES |  |  |  |  |  |
Loans covered under shared-loss agreements |  | 339,500 |  | 339,500 |  | $ 1,480,000
Loans Receivable | PCI loans |  |  |  |  |  |
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES |  |  |  |  |  |
Loans covered under shared-loss agreements |  | 297,600 |  | 297,600 |  | $ 1,230,000
Changes in the accretable yield for the PCI loans |  |  |  |  |  |
Beginning balance |  | 293,155 | 430,456 | 311,688 | 461,545 |
Addition |  |  |  |  | 6,745 |
Accretion |  | (23,359) | (65,623) | (53,928) | (127,569) |
Changes in expected cash flows |  | 2,066 | 28,061 | 14,102 | 52,173 |
Ending Balance |  | $ 271,862 | $ 392,894 | $ 271,862 | $ 392,894 |
Loans Receivable | United Commercial Bank (UCB) | Covered Loans |  |  |  |  |  |
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES |  |  |  |  |  |
Percentage of eligible losses for which the FDIC is obligated to reimburse the Company |  | 80.00% |  | 80.00% |  |
Percentage of eligible losses in excess of a specified amount for which the FDIC is obligated to reimburse the Company |  | 95.00% |  | 95.00% |  |
Amount of eligible losses over which the FDIC is obligated to reimburse a higher percentage |  | $ 2,050,000 |  | $ 2,050,000 |  |
Percentage obligation to reimburse the FDIC for eligible recoveries related to covered assets |  | 80.00% |  | 80.00% |  |
Percentage obligation to reimburse the FDIC for eligible recoveries related to losses in excess of a specified amount on covered assets |  | 95.00% |  | 95.00% |  |
Loans Receivable | Washington First International Bank (WFIB) | Covered Loans |  |  |  |  |  |
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES |  |  |  |  |  |
Percentage of eligible losses for which the FDIC is obligated to reimburse the Company |  | 80.00% |  | 80.00% |  |
Percentage obligation to reimburse the FDIC for eligible recoveries related to covered assets |  | 80.00% |  | 80.00% |  |
[1] | Reductions relate to charge-offs, partial prepayments, loan payoffs and loan sales which result in a corresponding reduction of the indemnification asset.
[2] | This represents the change in the calculated estimate the Company will be required to pay the FDIC at the end of the FDIC shared-loss agreements, due to lower thresholds of losses.

X
- Definition Amount of eligible losses for covered assets over which the FDIC is obligated to reimburse a higher percentage pursuant to the shared-loss agreements. + References No definition available. + Details
Name: | ewbc_AmountOfEligibleLossesOverWhichFdicIsObligatedToReimburseHigherPercentage
Namespace Prefix: | ewbc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Represents the change in the estimate of cash flows expected to be collected. This relates to a loan accounted for as an available-for-sale debt security, with evidence of deterioration of credit quality since origination that was acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable. + References No definition available. + Details
Name: | ewbc_ChangesInExpectedCashFlows
Namespace Prefix: | ewbc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | ewbc_FDICIndemnificationAssetLiabilitiesRollForward
Namespace Prefix: | ewbc_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Increases (decreases) to the indemnification asset or liability due to accretion (amortization) of the loan discount (premium) relating to loss sharing agreements with the Federal Deposit Insurance Corporation (FDIC). + References No definition available. + Details
Name: | ewbc_FdicIndemnificationAccretionAmortizationOfDiscountPremium
Namespace Prefix: | ewbc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Represents the carrying amount of receivable assets (liabilities) originating from the indemnification agreement with the Federal Deposit Insurance Corporation (FDIC), in which the FDIC is to partially cover losses. + References No definition available. + Details
Name: | ewbc_FdicIndemnificationAssetLiabilities
Namespace Prefix: | ewbc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Reductions (increases) in the FDIC indemnification asset (liability) resulting from write-offs, partial prepayments, loan payoffs and disposals. + References No definition available. + Details
Name: | ewbc_FdicIndemnificationAssetLiabilityReductionsIncreases
Namespace Prefix: | ewbc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Carrying amount of liabilities originating from the indemnification agreement with the Federal Deposit Insurance Corporation (FDIC), in which the FDIC is to partially cover losses. + References No definition available. + Details
Name: | ewbc_FdicIndemnificationLiability
Namespace Prefix: | ewbc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Change in the FDIC indemnification asset or liability for estimated amounts that the entity will be required to pay the FDIC at the end of the loss sharing agreements due to lower thresholds of losses. + References No definition available. + Details
Name: | ewbc_FdicRepayments
Namespace Prefix: | ewbc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Percentage obligation to reimburse the FDIC for eligible recoveries related to covered assets pursuant to the shared-loss agreements. + References No definition available. + Details
Name: | ewbc_PercentageObligationToReimburseFdicForEligibleRecoveriesRelatedToCoveredAssets
Namespace Prefix: | ewbc_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage obligation to reimburse the FDIC for eligible recoveries related to losses in excess of a certain amount on covered assets pursuant to the shared-loss agreements. + References No definition available. + Details
Name: | ewbc_PercentageObligationToReimburseFdicForEligibleRecoveriesRelatedToLossesInExcessOfCertainAmountOnCoveredAssets
Namespace Prefix: | ewbc_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage of eligible losses for which the FDIC is obligated to reimburse the Company pursuant to the shared-loss agreements. + References No definition available. + Details
Name: | ewbc_PercentageOfEligibleLossesForWhichFdicIsObligatedToReimburse
Namespace Prefix: | ewbc_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage of eligible losses for covered assets in excess of a certain amount for which the FDIC is obligated to reimburse the Company pursuant to the shared-loss agreements. + References No definition available. + Details
Name: | ewbc_PercentageOfEligibleLossesInExcessOfCertainAmountForWhichFdicIsObligatedToReimburse
Namespace Prefix: | ewbc_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_AccountsNotesAndLoansReceivableLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of the excess of a loan's cash flows expected to be collected over the investor's initial investment in acquired loans not accounted for as debt securities with evidence of deterioration of credit quality. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 15 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=27045933&loc=d3e13503-111538 + Details
Name: | us-gaap_CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of decrease from accretion of the excess of a loan's cash flows expected to be collected over the investor's initial investment in acquired loans not accounted for as debt securities with evidence of deterioration of credit quality. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 15 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=27045933&loc=d3e13503-111538 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544 + Details
Name: | us-gaap_CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldAccretion
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of additions to the excess of a loan's cash flows expected to be collected over the investor's initial investment in acquired loans not accounted for as debt securities with evidence of deterioration of credit quality. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 15 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=27045933&loc=d3e13503-111538 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544 + Details
Name: | us-gaap_CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldAdditions
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
Name: | us-gaap_CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldMovementScheduleRollForward
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Aggregate gross carrying amount of loans and leases receivable covered by loss sharing agreements. + References No definition available. + Details
Name: | us-gaap_LoansAndLeasesReceivableGrossCarryingAmountCovered
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=us-gaap_LoansReceivableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=ewbc_ReceivablesAcquiredWithDeterioratedCreditQualityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=ewbc_UnitedCommercialBankMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ewbc_ReceivableByIndemnificationStatusAxis=ewbc_CoveredLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=ewbc_WashingtonFirstInternationalBankMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |