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Summary of Significant Accounting Policies (Details Narrative) $ in Thousands	Jun. 30, 2019 USD ($)	Jan. 02, 2019 USD ($)	Jun. 30, 2018 USD ($)
Right of use asset	$ 28,214
Lease liabilities	$ 31,659		$ 31,700
Adjustments for New Accounting Pronouncement [Member]
Right of use asset		$ 29,600
Lease liabilities		$ 33,500
Banking Services [Member]
Number of locations	20
Lending Services [Member]
Number of locations	5

X

- Definition

Number of locations.

+ References

No definition available.

+ Details

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Namespace Prefix:	egbn_
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X

- 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

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X

- 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

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