Loans and Allowance for Credit Losses - Schedule of Risk Category of Loans by Class of Loans (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
Sep. 30, 2025	Dec. 31, 2024
Total
Prior	$ 2,433,920	$ 2,737,176
Originated, four years before current fiscal year	1,002,730	428,068
Originated, three years before current fiscal year	1,252,294	1,201,520
Originated, two years before current fiscal year	763,674	1,497,033
Originated, fiscal year before current fiscal year	322,626	722,101
Originated, current fiscal year	522,039	360,452
Revolving Loans Amort. Cost Basis	958,965	946,256
Revolving Loans Convert. to Term	48,431	42,282
Loans	7,304,679	7,934,888
YTD gross charge-offs
Prior	(65,856)	(38,247)
Originated, four years before current fiscal year	(316)	(386)
Originated, three years before current fiscal year	0	0
Originated, two years before current fiscal year	0	0
Originated, fiscal year before current fiscal year	0	0
Originated, current fiscal year	0	0
Revolving Loans Amort. Cost Basis	(279)	(523)
Revolving Loans Convert. to Term	(32)	(51)
Loans charged-off	(66,483)	(39,207)
Commercial
Total
Prior	130,755	151,827
Originated, four years before current fiscal year	21,001	33,967
Originated, three years before current fiscal year	68,975	135,528
Originated, two years before current fiscal year	71,580	110,958
Originated, fiscal year before current fiscal year	99,545	89,608
Originated, current fiscal year	266,338	104,927
Revolving Loans Amort. Cost Basis	554,008	544,252
Revolving Loans Convert. to Term	5,603	12,274
Loans	1,217,805	1,183,341
YTD gross charge-offs
Prior	(881)	(4,350)
Originated, four years before current fiscal year	(316)	0
Originated, three years before current fiscal year	0	0
Originated, two years before current fiscal year	0	0
Originated, fiscal year before current fiscal year	0	0
Originated, current fiscal year	0	0
Revolving Loans Amort. Cost Basis	(279)	(506)
Revolving Loans Convert. to Term	0	(50)
Loans charged-off	(1,476)	(4,906)
Commercial \| Pass
Total
Prior	98,504	132,595
Originated, four years before current fiscal year	20,177	26,775
Originated, three years before current fiscal year	40,374	133,400
Originated, two years before current fiscal year	70,251	110,439
Originated, fiscal year before current fiscal year	94,408	89,608
Originated, current fiscal year	266,338	104,927
Revolving Loans Amort. Cost Basis	515,191	513,645
Revolving Loans Convert. to Term	2,881	4,394
Loans	1,108,124	1,115,783
Commercial \| Special Mention
Total
Prior	9,125	7,828
Originated, four years before current fiscal year	344	3,479
Originated, three years before current fiscal year	10,085	0
Originated, two years before current fiscal year	996	0
Originated, fiscal year before current fiscal year	5,080	0
Originated, current fiscal year	0	0
Revolving Loans Amort. Cost Basis	27,568	18,384
Revolving Loans Convert. to Term	0	0
Loans	53,198	29,691
Commercial \| Substandard
Total
Prior	23,126	11,404
Originated, four years before current fiscal year	480	3,713
Originated, three years before current fiscal year	18,516	2,128
Originated, two years before current fiscal year	333	519
Originated, fiscal year before current fiscal year	57	0
Originated, current fiscal year	0	0
Revolving Loans Amort. Cost Basis	11,249	12,223
Revolving Loans Convert. to Term	2,722	7,880
Loans	56,483	37,867
PPP loans
Total
Loans	103	287
PPP loans \| Pass
Total
Prior	0	0
Originated, four years before current fiscal year	103	0
Originated, three years before current fiscal year	0	287
Originated, two years before current fiscal year	0	0
Originated, fiscal year before current fiscal year	0	0
Originated, current fiscal year	0	0
Revolving Loans Amort. Cost Basis	0	0
Revolving Loans Convert. to Term	0	0
Loans	103
YTD gross charge-offs
Loans charged-off		(287)
Income producing - commercial real estate
Total
Prior	1,476,249	1,782,806
Originated, four years before current fiscal year	604,079	269,719
Originated, three years before current fiscal year	675,220	626,527
Originated, two years before current fiscal year	313,757	701,422
Originated, fiscal year before current fiscal year	87,450	276,731
Originated, current fiscal year	131,581	151,535
Revolving Loans Amort. Cost Basis	151,279	226,863
Revolving Loans Convert. to Term	13,418	29,243
Loans	3,453,033	4,064,846
YTD gross charge-offs
Prior	(44,473)	(29,898)
Originated, four years before current fiscal year	0	(386)
Originated, three years before current fiscal year	0	0
Originated, two years before current fiscal year	0	0
Originated, fiscal year before current fiscal year	0	0
Originated, current fiscal year	0	0
Revolving Loans Amort. Cost Basis	0	0
Revolving Loans Convert. to Term	0	0
Loans charged-off	(44,473)	(30,284)
Income producing - commercial real estate \| Pass
Total
Prior	1,148,730	1,442,246
Originated, four years before current fiscal year	426,263	176,268
Originated, three years before current fiscal year	525,101	626,527
Originated, two years before current fiscal year	313,757	680,822
Originated, fiscal year before current fiscal year	80,355	276,731
Originated, current fiscal year	131,581	151,535
Revolving Loans Amort. Cost Basis	151,029	216,363
Revolving Loans Convert. to Term	13,418	29,243
Loans	2,790,234	3,599,735
Income producing - commercial real estate \| Special Mention
Total
Prior	95,808	74,251
Originated, four years before current fiscal year	120,777	91,643
Originated, three years before current fiscal year	76,721	0
Originated, two years before current fiscal year	0	20,600
Originated, fiscal year before current fiscal year	7,095	0
Originated, current fiscal year	0	0
Revolving Loans Amort. Cost Basis	0	0
Revolving Loans Convert. to Term	0	0
Loans	300,401	186,494
Income producing - commercial real estate \| Substandard
Total
Prior	231,711	266,309
Originated, four years before current fiscal year	57,039	1,808
Originated, three years before current fiscal year	73,398	0
Originated, two years before current fiscal year	0	0
Originated, fiscal year before current fiscal year	0	0
Originated, current fiscal year	0	0
Revolving Loans Amort. Cost Basis	250	10,500
Revolving Loans Convert. to Term	0	0
Loans	362,398	278,617
Owner occupied - commercial real estate
Total
Prior	750,784	742,550
Originated, four years before current fiscal year	214,503	58,859
Originated, three years before current fiscal year	37,175	219,162
Originated, two years before current fiscal year	146,923	40,316
Originated, fiscal year before current fiscal year	126,386	138,860
Originated, current fiscal year	120,571	69,623
Revolving Loans Amort. Cost Basis	98,369	299
Revolving Loans Convert. to Term	0	0
Loans	1,494,711	1,269,669
YTD gross charge-offs
Prior	(19,797)	(3,800)
Originated, four years before current fiscal year	0	0
Originated, three years before current fiscal year	0	0
Originated, two years before current fiscal year	0	0
Originated, fiscal year before current fiscal year		0
Originated, current fiscal year	0	0
Revolving Loans Amort. Cost Basis	0	0
Revolving Loans Convert. to Term	0	0
Loans charged-off	(19,797)	(3,800)
Owner occupied - commercial real estate \| Pass
Total
Prior	670,749	622,258
Originated, four years before current fiscal year	211,343	57,611
Originated, three years before current fiscal year	36,098	219,162
Originated, two years before current fiscal year	146,464	39,221
Originated, fiscal year before current fiscal year	126,386	138,860
Originated, current fiscal year	120,571	69,623
Revolving Loans Amort. Cost Basis	98,369	299
Revolving Loans Convert. to Term	0	0
Loans	1,409,980	1,147,034
Owner occupied - commercial real estate \| Special Mention
Total
Prior	9,451	23,658
Originated, four years before current fiscal year	0	0
Originated, three years before current fiscal year	0	0
Originated, two years before current fiscal year	0	0
Originated, fiscal year before current fiscal year	0	0
Originated, current fiscal year	0	0
Revolving Loans Amort. Cost Basis	0	0
Revolving Loans Convert. to Term	0	0
Loans	9,451	23,658
Owner occupied - commercial real estate \| Substandard
Total
Prior	70,584	96,634
Originated, four years before current fiscal year	3,160	1,248
Originated, three years before current fiscal year	1,077	0
Originated, two years before current fiscal year	459	1,095
Originated, fiscal year before current fiscal year	0	0
Originated, current fiscal year	0	0
Revolving Loans Amort. Cost Basis	0	0
Revolving Loans Convert. to Term	0	0
Loans	75,280	98,977
Real estate mortgage - residential:
Total
Prior	20,385	20,080
Originated, four years before current fiscal year	6,435	2,435
Originated, three years before current fiscal year	12,019	9,972
Originated, two years before current fiscal year	5,845	12,181
Originated, fiscal year before current fiscal year	0	5,867
Originated, current fiscal year	0	0
Revolving Loans Amort. Cost Basis	0	0
Revolving Loans Convert. to Term	0	0
Loans	44,684	50,535
YTD gross charge-offs
Loans charged-off	(44,684)	(50,535)
Real estate mortgage - residential: \| Pass
Total
Prior	14,244	20,080
Originated, four years before current fiscal year	6,435	2,435
Originated, three years before current fiscal year	12,019	9,972
Originated, two years before current fiscal year	5,845	12,181
Originated, fiscal year before current fiscal year	0	5,867
Originated, current fiscal year	0	0
Revolving Loans Amort. Cost Basis	0	0
Revolving Loans Convert. to Term	0	0
Loans	38,543	50,535
Real estate mortgage - residential: \| Substandard
Total
Prior	6,141
Originated, four years before current fiscal year	0
Originated, three years before current fiscal year	0
Originated, two years before current fiscal year	0
Originated, fiscal year before current fiscal year	0
Originated, current fiscal year	0
Revolving Loans Amort. Cost Basis	0
Revolving Loans Convert. to Term	0
Loans	6,141
Construction - commercial and residential:
Total
Prior	50,240	32,422
Originated, four years before current fiscal year	156,367	38,385
Originated, three years before current fiscal year	458,571	209,787
Originated, two years before current fiscal year	215,777	595,496
Originated, fiscal year before current fiscal year	9,239	202,577
Originated, current fiscal year	3,754	7,588
Revolving Loans Amort. Cost Basis	107,010	124,508
Revolving Loans Convert. to Term	9,409	0
Loans	1,010,367	1,210,763
YTD gross charge-offs
Prior	(702)	(129)
Originated, four years before current fiscal year	0	0
Originated, three years before current fiscal year	0	0
Originated, two years before current fiscal year	0	0
Originated, fiscal year before current fiscal year	0	0
Originated, current fiscal year	0	0
Revolving Loans Amort. Cost Basis	0	0
Revolving Loans Convert. to Term	0	0
Loans charged-off	(702)	(129)
Construction - commercial and residential: \| Pass
Total
Prior	39,742	26,739
Originated, four years before current fiscal year	112,801	38,385
Originated, three years before current fiscal year	418,039	199,933
Originated, two years before current fiscal year	215,777	595,496
Originated, fiscal year before current fiscal year	9,239	202,577
Originated, current fiscal year	3,754	7,588
Revolving Loans Amort. Cost Basis	107,010	124,508
Revolving Loans Convert. to Term	9,409	0
Loans	915,771	1,195,226
Construction - commercial and residential: \| Special Mention
Total
Prior	0	0
Originated, four years before current fiscal year	35,654	0
Originated, three years before current fiscal year	24,981	4,964
Originated, two years before current fiscal year	0	0
Originated, fiscal year before current fiscal year	0	0
Originated, current fiscal year	0	0
Revolving Loans Amort. Cost Basis	0	0
Revolving Loans Convert. to Term	0	0
Loans	60,635	4,964
Construction - commercial and residential: \| Substandard
Total
Prior	10,498	5,683
Originated, four years before current fiscal year	7,912	0
Originated, three years before current fiscal year	15,551	4,890
Originated, two years before current fiscal year	0	0
Originated, fiscal year before current fiscal year	0	0
Originated, current fiscal year	0	0
Revolving Loans Amort. Cost Basis	0	0
Revolving Loans Convert. to Term	0	0
Loans	33,961	10,573
Construction - C&I (owner occupied) \| Pass
Total
Prior	3,775	6,063
Originated, four years before current fiscal year	0	24,632
Originated, three years before current fiscal year	0	0
Originated, two years before current fiscal year	9,792	36,544
Originated, fiscal year before current fiscal year	0	8,458
Originated, current fiscal year	(382)	26,730
Revolving Loans Amort. Cost Basis	800	832
Revolving Loans Convert. to Term	19,393	0
Loans	33,378	103,259
Home equity
Total
Prior	1,732	1,425
Originated, four years before current fiscal year	242	71
Originated, three years before current fiscal year	334	257
Originated, two years before current fiscal year	0	116
Originated, fiscal year before current fiscal year	0	0
Originated, current fiscal year	0	0
Revolving Loans Amort. Cost Basis	46,417	48,496
Revolving Loans Convert. to Term	608	765
Loans	49,333	51,130
YTD gross charge-offs
Loans charged-off	(49,333)	(51,130)
Home equity \| Pass
Total
Prior	1,679	1,366
Originated, four years before current fiscal year	35	71
Originated, three years before current fiscal year	114	35
Originated, two years before current fiscal year	0	116
Originated, fiscal year before current fiscal year	0	0
Originated, current fiscal year	0	0
Revolving Loans Amort. Cost Basis	46,371	48,443
Revolving Loans Convert. to Term	608	765
Loans	48,807	50,796
Home equity \| Substandard
Total
Prior	53	59
Originated, four years before current fiscal year	207	0
Originated, three years before current fiscal year	220	222
Originated, two years before current fiscal year	0	0
Originated, fiscal year before current fiscal year	0	0
Originated, current fiscal year	0	0
Revolving Loans Amort. Cost Basis	46	53
Revolving Loans Convert. to Term	0	0
Loans	526	334
Other consumer
Total
Loans	1,265	1,058
YTD gross charge-offs
Prior	(3)	(70)
Originated, four years before current fiscal year	0	0
Originated, three years before current fiscal year	0	0
Originated, two years before current fiscal year	0	0
Originated, fiscal year before current fiscal year	0	0
Originated, current fiscal year	0	0
Revolving Loans Amort. Cost Basis	0	(17)
Revolving Loans Convert. to Term	(32)	(1)
Loans charged-off	(35)	(88)
Other consumer \| Pass
Total
Prior	0	3
Originated, four years before current fiscal year	0	0
Originated, three years before current fiscal year	0	0
Originated, two years before current fiscal year	0	0
Originated, fiscal year before current fiscal year	6	0
Originated, current fiscal year	177	49
Revolving Loans Amort. Cost Basis	1,082	1,006
Revolving Loans Convert. to Term	0	0
Loans	$ 1,265	$ 1,058

Financial Asset, Write Offs

No definition available.

Name:	egbn_FinancialAssetWriteOffsAbstract
Namespace Prefix:	egbn_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Financing Receivable Allowance For Credit Losses Write Offs, Originated Five or More Years Before Latest Fiscal Year

+ References

No definition available.

+ Details

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

- Definition

Financing Receivable Allowance For Credit Losses Write Offs, Originated Four Years Before Latest Fiscal Year

+ References

No definition available.

+ Details

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

- Definition

Financing Receivable Allowance For Credit Losses Write Offs, Originated In Current Fiscal Year

+ References

No definition available.

+ Details

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

- Definition

Financing Receivable Allowance For Credit Losses Write Offs, Originated In Fiscal Year Before Latest Fiscal Year

+ References

No definition available.

+ Details

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

- Definition

Financing Receivable Allowance For Credit Losses Write Offs, Originated Three Years Before Latest Fiscal Year

+ References

No definition available.

+ Details

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

- Definition

Financing Receivable Allowance For Credit Losses Write Offs, Originated Two Years Before Latest Fiscal Year

+ References

No definition available.

+ Details

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

- Definition

Financing Receivable Allowance For Credit Losses Write Offs, Revolving

+ References

No definition available.

+ Details

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

- Definition

Financing Receivable Allowance For Credit Losses Write Offs, Revolving Converted to Term Loan

+ References

No definition available.

+ Details

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

- Definition

Financing Receivable, Held For Investment, Allowance for Credit Loss, Writeoff

+ References

No definition available.

+ Details

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

- Definition

Amortized cost of financing receivable originated more than five years prior to current fiscal year. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 79
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479294/326-20-55-79

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

+ Details

Name:	us-gaap_FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amortized cost of financing receivable originated four years prior to current fiscal year. Excludes net investment in lease.

+ References

+ Details

Name:	us-gaap_FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amortized cost of financing receivable originated in current fiscal year. Excludes net investment in lease.

+ References

+ Details

Name:	us-gaap_FinancingReceivableOriginatedInCurrentFiscalYear
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amortized cost of financing receivable originated in fiscal year prior to current fiscal year. Excludes net investment in lease.

+ References

+ Details

Name:	us-gaap_FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amortized cost of financing receivable originated three years prior to current fiscal year. Excludes net investment in lease.

+ References

+ Details

Name:	us-gaap_FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amortized cost of financing receivable originated two years prior to current fiscal year. Excludes net investment in lease.

+ References

+ Details

Name:	us-gaap_FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amortized cost of financing receivable that can be withdrawn, repaid, and redrawn.

+ References

+ Details

Name:	us-gaap_FinancingReceivableRevolving
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amortized cost of revolving financing receivable converted to term loan.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 79
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479294/326-20-55-79

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6A

+ Details

Name:	us-gaap_FinancingReceivableRevolvingConvertedToTermLoan
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- References

No definition available.

+ Details

Name:	us-gaap_LoansAndLeasesReceivableDisclosureAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amortized cost, before allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479344/326-20-45-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 1A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482736/825-10-45-1A

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 948
-SubTopic 310
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477011/948-310-45-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 13
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481990/310-10-45-13

Reference 5: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 7A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481962/310-10-50-7A

Reference 6: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 29
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481962/310-10-50-29

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-K (SK)
-Number 229
-Section 1405
-Paragraph a
-Subparagraph (1)
-Publisher SEC

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-K (SK)
-Number 229
-Section 1405
-Paragraph a
-Subparagraph (2)
-Publisher SEC

Reference 9: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Regulation S-K (SK)
-Number 229
-Section 1404
-Paragraph a
-Publisher SEC

Reference 10: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 80
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479294/326-20-55-80

Reference 11: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 79
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479294/326-20-55-79

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(3)(b))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 14
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-14

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-5

+ Details

Name:	us-gaap_NotesReceivableGross
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_InternalCreditAssessmentAxis=us-gaap_PassMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_InternalCreditAssessmentAxis=us-gaap_SpecialMentionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_InternalCreditAssessmentAxis=us-gaap_SubstandardMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=egbn_PaycheckProtectionProgramLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=egbn_IncomeProducingPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=egbn_OwnerOccupiedPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ResidentialPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=egbn_ConstructionPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=egbn_CommercialAndIndustrialLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=egbn_HomeEquityPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=egbn_OtherConsumerPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: