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Leases - Narrative (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Lessee, Lease, Description [Line Items] |  |
Operating lease right-of-use assets | $ 30,555 | $ 25,237
Operating lease liabilities | $ 35,501 | $ 28,022
Lessee operating lease option to extend percent | 90.00% |
Accounting Standards Update 2016-02 |  |
Lessee, Lease, Description [Line Items] |  |
Operating lease right-of-use assets | $ 30,600 |
Operating lease liabilities | $ 35,500 |

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- Definition Percent probability of option to extend lease. + References No definition available. + Details
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Namespace Prefix: | egbn_
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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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Namespace Prefix: | us-gaap_
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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=123391704&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=123391704&loc=SL77918627-209977 + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Details
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