Note 11 - Deposits - Interest Expense on Deposits (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Interest bearing transaction	$ 646	$ 291	$ 178
Savings and money market	12,038	8,185	6,265
Time, $100,000 or more	6,487	5,019	2,830
Other time	77	848	365
Total	$ 19,248	$ 14,343	$ 9,638

Interest expense interest bearing transaction deposits.

No definition available.

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Namespace Prefix:	egbn_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Aggregate amount of interest expense on all deposits.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.6)
-URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882

+ Details

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Balance Type:	debit
Period Type:	duration

- Definition

The aggregate interest expense incurred on the following for deposits in domestic offices: (1) transaction accounts (NOW, and telephone and preauthorized transfer accounts), (2) money market deposits and (3) savings deposits.

+ References

+ Details

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- Definition

Interest expense incurred on time deposits, including certificates of deposits, of $100,000 or more in domestic offices.

+ References

+ Details

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- Definition

Interest expense incurred on time deposits, including certificates of deposits, less than $100,000 in domestic offices.

+ References

+ Details

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