Represents the option period for a contractual obligation.

No definition available.

Name:	egbn_ContractualObligationOptionPeriod
Namespace Prefix:	egbn_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of increase (decrease) in contractual obligations if the contract is terminated.

+ References

No definition available.

+ Details

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

- Definition

Amount of time, after which, the company has the option to terminate the agreement.

+ References

No definition available.

+ Details

Name:	egbn_OptionToTerminate
Namespace Prefix:	egbn_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of contractual obligation, including but not limited to, long-term debt, capital lease obligations, operating lease obligations, purchase obligations, and other commitments.

+ References

No definition available.

+ Details

Name:	us-gaap_ContractualObligation
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of contractual obligation to be paid after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of contractual obligation to be paid in fourth and fifth fiscal years following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of contractual obligation to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

No definition available.

+ Details

Name:	us-gaap_ContractualObligationDueInNextTwelveMonths
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of contractual obligation to be paid in second and third fiscal years following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

No definition available.

+ Details

Name:	us-gaap_ContractualObligationDueInSecondAndThirdYear
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- 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_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

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Namespace Prefix:
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Balance Type:
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- Details

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Balance Type:
Period Type:

- Details

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Balance Type:
Period Type:

- Details

Name:	us-gaap_GuaranteeObligationsByNatureAxis=egbn_OperatingLeaseObligationsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_GuaranteeObligationsByNatureAxis=egbn_OutsideDataProcessingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Data Type:	na
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- Details

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Data Type:	na
Balance Type:
Period Type:

Commitments and Contingent Liabilities (Details) - USD ($) $ in Thousands			12 Months Ended
	Jun. 30, 2030	Jun. 30, 2025	Dec. 31, 2021
Guarantor Obligations [Line Items]
Within one year			$ 10,075,480
One to three years			325,786
Three to five years			32,082
Over five years			18,651
Total			10,451,999
Deposits Without a Stated Maturity
Guarantor Obligations [Line Items]
Within one year			9,252,458
One to three years			0
Three to five years			0
Over five years			0
Total			9,252,458
Time Deposits
Guarantor Obligations [Line Items]
Within one year			478,056
One to three years			227,188
Three to five years			20,708
Over five years			3,130
Total			729,082
Borrowed Funds
Guarantor Obligations [Line Items]
Within one year			323,918
One to three years			69,670
Three to five years			0
Over five years			0
Total			393,588
Operating Lease Obligations
Guarantor Obligations [Line Items]
Within one year			7,231
One to three years			13,330
Three to five years			9,517
Over five years			8,407
Total			38,485
Outside Data Processing
Guarantor Obligations [Line Items]
Within one year			4,325
One to three years			5,225
Three to five years			0
Over five years			0
Total			9,550
George Mason Sponsorship
Guarantor Obligations [Line Items]
Within one year			675
One to three years			1,350
Three to five years			1,388
Over five years			6,075
Total			9,488
George Mason Sponsorship \| Termination Option One
Guarantor Obligations [Line Items]
Increase (decrease) in contractual obligation, termination option			$ 3,500
George Mason Sponsorship \| Termination Option One \| Minimum
Guarantor Obligations [Line Items]
Contractual obligation, option period			11 years
George Mason Sponsorship \| Termination Option One \| Maximum
Guarantor Obligations [Line Items]
Contractual obligation, option period			15 years
George Mason Sponsorship \| Termination Option Two
Guarantor Obligations [Line Items]
Increase (decrease) in contractual obligation, termination option			$ 3,600
George Mason Sponsorship \| Termination Option Two \| Minimum
Guarantor Obligations [Line Items]
Contractual obligation, option period			16 years
George Mason Sponsorship \| Termination Option Two \| Maximum
Guarantor Obligations [Line Items]
Contractual obligation, option period			20 years
George Mason Sponsorship \| Forecast
Guarantor Obligations [Line Items]
Option to terminate	15 years	10 years
D.C. United
Guarantor Obligations [Line Items]
Within one year			$ 844
One to three years			0
Three to five years			0
Over five years			0
Total			844
LIHTC Investments
Guarantor Obligations [Line Items]
Within one year			7,973
One to three years			7,023
Three to five years			469
Over five years			1,039
Total			16,504
Other Investments
Guarantor Obligations [Line Items]
Within one year			0
One to three years			2,000
Three to five years			0
Over five years			0
Total			$ 2,000