XML 89 R73.htm IDEA: XBRL DOCUMENT
v3.24.2.u1

Loans Receivable and Allowance for Credit Losses - Schedule Of Loans Modification (Details) - USD ($) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Financing Receivable, Modified [Line Items] |  |  |  |
Financing Receivable, Modified, Subsequent Default | $ 13,799,000 | $ 0 | $ 25,975,000 | $ 0
Term Extension |  |  |  |
Financing Receivable, Modified [Line Items] |  |  |  |
Financing Receivable, Modified, Subsequent Default | 0 |  | 7,829,000 |
Payment Delay |  |  |  |
Financing Receivable, Modified [Line Items] |  |  |  |
Financing Receivable, Modified, Subsequent Default | 10,212,000 |  | 14,174,000 |
Combination: Rate Reduction/ Payment Delay |  |  |  |
Financing Receivable, Modified [Line Items] |  |  |  |
Financing Receivable, Modified, Subsequent Default | 1,149,000 |  | 1,149,000 |
Combination Term Extension and Interest Rate Reduction 2 |  |  |  |
Financing Receivable, Modified [Line Items] |  |  |  |
Financing Receivable, Modified, Subsequent Default | 2,438,000 |  | 2,823,000 |
Commercial lending |  |  |  |
Financing Receivable, Modified [Line Items] |  |  |  |
Financing Receivable, Modified, Subsequent Default | 5,658,000 |  | 13,487,000 |
Commercial lending | Term Extension |  |  |  |
Financing Receivable, Modified [Line Items] |  |  |  |
Financing Receivable, Modified, Subsequent Default | 0 |  | 7,829,000 |
Commercial lending | Payment Delay |  |  |  |
Financing Receivable, Modified [Line Items] |  |  |  |
Financing Receivable, Modified, Subsequent Default | 5,658,000 |  | 5,658,000 |
Commercial lending | Combination: Rate Reduction/ Payment Delay |  |  |  |
Financing Receivable, Modified [Line Items] |  |  |  |
Financing Receivable, Modified, Subsequent Default | 0 |  | 0 |
Commercial lending | Combination Term Extension and Interest Rate Reduction 2 |  |  |  |
Financing Receivable, Modified [Line Items] |  |  |  |
Financing Receivable, Modified, Subsequent Default | 0 |  | 0 |
Commercial lending | C&I |  |  |  |
Financing Receivable, Modified [Line Items] |  |  |  |
Financing Receivable, Modified, Subsequent Default | 5,658,000 |  | 13,487,000 |
Commercial lending | C&I | Term Extension |  |  |  |
Financing Receivable, Modified [Line Items] |  |  |  |
Financing Receivable, Modified, Subsequent Default | 0 |  | 7,829,000 |
Commercial lending | C&I | Payment Delay |  |  |  |
Financing Receivable, Modified [Line Items] |  |  |  |
Financing Receivable, Modified, Subsequent Default | 5,658,000 |  | 5,658,000 |
Commercial lending | C&I | Combination: Rate Reduction/ Payment Delay |  |  |  |
Financing Receivable, Modified [Line Items] |  |  |  |
Financing Receivable, Modified, Subsequent Default | 0 |  | 0 |
Commercial lending | C&I | Combination Term Extension and Interest Rate Reduction 2 |  |  |  |
Financing Receivable, Modified [Line Items] |  |  |  |
Financing Receivable, Modified, Subsequent Default | 0 |  | 0 |
Consumer lending |  |  |  |
Financing Receivable, Modified [Line Items] |  |  |  |
Financing Receivable, Modified, Subsequent Default | 8,141,000 |  | 12,488,000 |
Consumer lending | Term Extension |  |  |  |
Financing Receivable, Modified [Line Items] |  |  |  |
Financing Receivable, Modified, Subsequent Default | 0 |  | 0 |
Consumer lending | Payment Delay |  |  |  |
Financing Receivable, Modified [Line Items] |  |  |  |
Financing Receivable, Modified, Subsequent Default | 4,554,000 |  | 8,516,000 |
Consumer lending | Combination: Rate Reduction/ Payment Delay |  |  |  |
Financing Receivable, Modified [Line Items] |  |  |  |
Financing Receivable, Modified, Subsequent Default | 1,149,000 |  | 1,149,000 |
Consumer lending | Combination Term Extension and Interest Rate Reduction 2 |  |  |  |
Financing Receivable, Modified [Line Items] |  |  |  |
Financing Receivable, Modified, Subsequent Default | 2,438,000 |  | 2,823,000 |
Consumer lending | HELOCs |  |  |  |
Financing Receivable, Modified [Line Items] |  |  |  |
Financing Receivable, Modified, Subsequent Default | 2,090,000 |  | 2,090,000 |
Consumer lending | HELOCs | Term Extension |  |  |  |
Financing Receivable, Modified [Line Items] |  |  |  |
Financing Receivable, Modified, Subsequent Default | 0 |  | 0 |
Consumer lending | HELOCs | Payment Delay |  |  |  |
Financing Receivable, Modified [Line Items] |  |  |  |
Financing Receivable, Modified, Subsequent Default | 941,000 |  | 941,000 |
Consumer lending | HELOCs | Combination: Rate Reduction/ Payment Delay |  |  |  |
Financing Receivable, Modified [Line Items] |  |  |  |
Financing Receivable, Modified, Subsequent Default | 1,149,000 |  | 1,149,000 |
Consumer lending | HELOCs | Combination Term Extension and Interest Rate Reduction 2 |  |  |  |
Financing Receivable, Modified [Line Items] |  |  |  |
Financing Receivable, Modified, Subsequent Default | 0 |  | 0 |
Consumer lending | Single-family residential |  |  |  |
Financing Receivable, Modified [Line Items] |  |  |  |
Financing Receivable, Modified, Subsequent Default | 6,051,000 |  | 10,398,000 |
Consumer lending | Single-family residential | Term Extension |  |  |  |
Financing Receivable, Modified [Line Items] |  |  |  |
Financing Receivable, Modified, Subsequent Default | 0 |  | 0 |
Consumer lending | Single-family residential | Payment Delay |  |  |  |
Financing Receivable, Modified [Line Items] |  |  |  |
Financing Receivable, Modified, Subsequent Default | 3,613,000 |  | 7,575,000 |
Consumer lending | Single-family residential | Combination: Rate Reduction/ Payment Delay |  |  |  |
Financing Receivable, Modified [Line Items] |  |  |  |
Financing Receivable, Modified, Subsequent Default | 0 |  | 0 |
Consumer lending | Single-family residential | Combination Term Extension and Interest Rate Reduction 2 |  |  |  |
Financing Receivable, Modified [Line Items] |  |  |  |
Financing Receivable, Modified, Subsequent Default | $ 2,438,000 |  | $ 2,823,000 |

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 Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 34 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-34 Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 33 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-33 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 12A -Publisher FASB -URI https://asc.fasb.org/1943274/2147481933/310-10-55-12A Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 42 -Subparagraph (a)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-42 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 42 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-42 + Details
Name: | us-gaap_FinancingReceivableModificationsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amortized cost of financing receivable with payment default in current period and modified within previous 12 months preceding payment default for debtor experiencing financial difficulty. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 34 -Subparagraph (a)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-34 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 12A -Publisher FASB -URI https://asc.fasb.org/1943274/2147481933/310-10-55-12A Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 44 -Subparagraph (a)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-44 + Details
Name: | us-gaap_FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_LoanRestructuringModificationAxis=us-gaap_ExtendedMaturityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LoanRestructuringModificationAxis=us-gaap_PaymentDeferralMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LoanRestructuringModificationAxis=ewbc_RateReductionAndPaymentDelayMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LoanRestructuringModificationAxis=ewbc_CombinationTermExtensionAndPaymentDelayMember
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_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=ewbc_CommercialAndIndustrialLoanMember
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_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_HomeEquityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=srt_SingleFamilyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |