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Leases (Balance Sheet Classification) (Details) $ in Thousands | Sep. 30, 2019 USD ($)
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Lessee, Lease, Description [Line Items] |
Operating lease assets | $ 103,894
Total lease assets | 111,826
Operating lease liabilities | 112,142
Finance lease liabilities | 5,356
Total lease liabilities | 117,498
Operating lease right-of use assets |
Lessee, Lease, Description [Line Items] |
Operating lease assets | 103,894
Premises and equipment |
Lessee, Lease, Description [Line Items] |
Finance lease assets | 7,932
Operating lease liabilities |
Lessee, Lease, Description [Line Items] |
Operating lease liabilities | 112,142
Long-term debt and finance lease liabilities |
Lessee, Lease, Description [Line Items] |
Finance lease liabilities | $ 5,356

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- Definition Lease, Liability + References No definition available. + Details
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Balance Type: | credit
Period Type: | instant

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- Definition Lease, Right-of-Use Asset + References No definition available. + Details
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Namespace Prefix: | ewbc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Present value of lessee's discounted obligation for lease payments from finance lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918701-209980 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977 + Details
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- Definition Amount of lessee's right to use underlying asset under finance lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977 + Details
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- 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
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- Definition Present value of lessee's discounted obligation for lease payments from operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977 + Details
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- Definition Amount of lessee's right to use underlying asset under operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977 + Details
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- Details
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