XML 109 R90.htm IDEA: XBRL DOCUMENT
v3.3.1.900

LOANS RECEIVABLE AND ALLOWANCE FOR CREDIT LOSSES (Details 10) - USD ($) $ in Thousands | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
--- | --- | --- | --- | ---
Allowance for loan losses |  |  |  |
Individually evaluated for impairment | $ 20,338 | $ 19,464 |  |
Collectively evaluated for impairment | 244,262 | 241,501 |  |
Allowance for loan losses | 264,959 | 261,679 |  |
Acquired with deteriorated credit quality |  |  |  |
Allowance for loan losses |  |  |  |
Allowance for loan losses | 359 | 714 |  |
CRE |  |  |  |
Allowance for loan losses |  |  |  |
Individually evaluated for impairment | 3,267 | 3,487 |  |
Collectively evaluated for impairment | 77,924 | 68,776 |  |
Allowance for loan losses | 81,538 | 72,977 |  |
CRE | Acquired with deteriorated credit quality |  |  |  |
Allowance for loan losses |  |  |  |
Allowance for loan losses | 347 | 714 |  |
C&I |  |  |  |
Allowance for loan losses |  |  |  |
Individually evaluated for impairment | 16,088 | 15,202 |  |
Collectively evaluated for impairment | 118,509 | 119,396 |  |
Allowance for loan losses | 134,606 | 134,598 |  |
C&I | Acquired with deteriorated credit quality |  |  |  |
Allowance for loan losses |  |  |  |
Allowance for loan losses | 9 | 0 |  |
Residential |  |  |  |
Allowance for loan losses |  |  |  |
Individually evaluated for impairment | 923 | 774 |  |
Collectively evaluated for impairment | 38,369 | 43,082 |  |
Allowance for loan losses | 39,295 | 43,856 |  |
Residential | Acquired with deteriorated credit quality |  |  |  |
Allowance for loan losses |  |  |  |
Allowance for loan losses | 3 | 0 |  |
Consumer |  |  |  |
Allowance for loan losses |  |  |  |
Individually evaluated for impairment | 60 | 1 |  |
Collectively evaluated for impairment | 9,460 | 10,247 |  |
Allowance for loan losses | 9,520 | 10,248 |  |
Consumer | Acquired with deteriorated credit quality |  |  |  |
Allowance for loan losses |  |  |  |
Allowance for loan losses | 0 | 0 |  |
Loans Receivable |  |  |  |
Allowance for loan losses |  |  |  |
Allowance for loan losses | 264,959 | 261,679 | $ 249,675 | $ 234,535
Recorded investment in loans |  |  |  |
Individually evaluated for impairment | 163,206 | 164,732 |  |
Collectively evaluated for impairment | 22,525,801 | 20,240,300 |  |
Total loans | 23,659,761 | 21,727,145 |  |
Loans Receivable | Acquired with deteriorated credit quality |  |  |  |
Allowance for loan losses |  |  |  |
Allowance for loan losses | 359 | 714 | $ 2,269 | $ 0
Recorded investment in loans |  |  |  |
Total loans | 970,754 | 1,322,113 |  |
Loans Receivable | CRE |  |  |  |
Recorded investment in loans |  |  |  |
Individually evaluated for impairment | 41,396 | 66,514 |  |
Collectively evaluated for impairment | 7,519,988 | 6,035,702 |  |
Total loans | 8,110,749 | 6,819,513 |  |
Loans Receivable | CRE | Acquired with deteriorated credit quality |  |  |  |
Recorded investment in loans |  |  |  |
Total loans | 549,365 | 717,297 |  |
Loans Receivable | C&I |  |  |  |
Recorded investment in loans |  |  |  |
Individually evaluated for impairment | 81,831 | 45,145 |  |
Collectively evaluated for impairment | 8,861,960 | 7,942,436 |  |
Total loans | 9,003,007 | 8,077,201 |  |
Loans Receivable | C&I | Acquired with deteriorated credit quality |  |  |  |
Recorded investment in loans |  |  |  |
Total loans | 59,216 | 89,620 |  |
Loans Receivable | Residential |  |  |  |
Recorded investment in loans |  |  |  |
Individually evaluated for impairment | 38,739 | 51,814 |  |
Collectively evaluated for impairment | 4,213,265 | 4,779,465 |  |
Total loans | 4,589,914 | 5,316,689 |  |
Loans Receivable | Residential | Acquired with deteriorated credit quality |  |  |  |
Recorded investment in loans |  |  |  |
Total loans | 337,910 | 485,410 |  |
Loans Receivable | Consumer |  |  |  |
Recorded investment in loans |  |  |  |
Individually evaluated for impairment | 1,240 | 1,259 |  |
Collectively evaluated for impairment | 1,930,588 | 1,482,697 |  |
Total loans | 1,956,091 | 1,513,742 |  |
Loans Receivable | Consumer | Acquired with deteriorated credit quality |  |  |  |
Recorded investment in loans |  |  |  |
Total loans | $ 24,263 | $ 29,786 |  |

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

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

X
- Definition A valuation allowance for financing receivables that are expected to be uncollectible. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953423-111524 + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLosses
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953423-111524 + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953423-111524 + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The balance of financing receivables that were collectively evaluated for impairment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953423-111524 + Details
Name: | us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The balance of financing receivables that were individually evaluated for impairment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953423-111524 + Details
Name: | us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount representing an agreement for an unconditional promise by the maker to pay the entity (holder) a definite sum of money at a future date. Such amount may include accrued interest receivable in accordance with the terms of the note. The note also may contain provisions and related items including a discount or premium, payable on demand, secured, or unsecured, interest bearing or noninterest bearing, among a myriad of other features and characteristics. Excludes amounts related to receivables held-for-sale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.10(3)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
Name: | us-gaap_NotesReceivableGross
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_ReceivablesAcquiredWithDeterioratedCreditQualityAxis=us-gaap_ReceivablesAcquiredWithDeterioratedCreditQualityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialRealEstatePortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ResidentialPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ConsumerPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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