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Note 5 - Loans and Allowance for Credit Losses (Details) - Loans and Leases by Credit Quality Indicator (USD $) In Thousands, unless otherwise specified | Mar. 31, 2015 | Dec. 31, 2014 | Mar. 31, 2014
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Financing Receivable, Recorded Investment [Line Items] |  |  |
Loans and Leases Receivable Net of Deferred Income | $ 4,444,893 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome | $ 4,312,399 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome | $ 3,063,975 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
Commercial Loan [Member] | Pass [Member] |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Loans and Leases Receivable Net of Deferred Income | 891,850 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = us-gaap_CommercialLoanMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember | 875,102 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = us-gaap_CommercialLoanMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember | 661,432 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = us-gaap_CommercialLoanMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember
Commercial Loan [Member] | Watch and Special Mention [Member] |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Loans and Leases Receivable Net of Deferred Income | 24,884 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = us-gaap_CommercialLoanMember / us-gaap_InternalCreditAssessmentAxis = egbn_WatchAndSpecialMentionMember | 23,512 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = us-gaap_CommercialLoanMember / us-gaap_InternalCreditAssessmentAxis = egbn_WatchAndSpecialMentionMember | 15,627 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = us-gaap_CommercialLoanMember / us-gaap_InternalCreditAssessmentAxis = egbn_WatchAndSpecialMentionMember
Commercial Loan [Member] | Substandard [Member] |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Loans and Leases Receivable Net of Deferred Income | 16,981 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = us-gaap_CommercialLoanMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember | 17,612 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = us-gaap_CommercialLoanMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember | 27,327 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = us-gaap_CommercialLoanMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember
Commercial Loan [Member] |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Loans and Leases Receivable Net of Deferred Income | 933,715 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = us-gaap_CommercialLoanMember | 916,226 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = us-gaap_CommercialLoanMember | 704,386 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = us-gaap_CommercialLoanMember
Commercial Real Estate Investment [Member] | Pass [Member] |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Loans and Leases Receivable Net of Deferred Income | 1,719,982 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = egbn_CommercialRealEstateInvestmentMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember | 1,679,101 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = egbn_CommercialRealEstateInvestmentMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember | 1,167,621 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = egbn_CommercialRealEstateInvestmentMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember
Commercial Real Estate Investment [Member] | Watch and Special Mention [Member] |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Loans and Leases Receivable Net of Deferred Income | 14,900 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = egbn_CommercialRealEstateInvestmentMember / us-gaap_InternalCreditAssessmentAxis = egbn_WatchAndSpecialMentionMember | 18,962 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = egbn_CommercialRealEstateInvestmentMember / us-gaap_InternalCreditAssessmentAxis = egbn_WatchAndSpecialMentionMember | 26,276 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = egbn_CommercialRealEstateInvestmentMember / us-gaap_InternalCreditAssessmentAxis = egbn_WatchAndSpecialMentionMember
Commercial Real Estate Investment [Member] | Substandard [Member] |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Loans and Leases Receivable Net of Deferred Income | 4,601 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = egbn_CommercialRealEstateInvestmentMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember | 5,109 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = egbn_CommercialRealEstateInvestmentMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember | 2,508 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = egbn_CommercialRealEstateInvestmentMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember
Commercial Real Estate Investment [Member] |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Loans and Leases Receivable Net of Deferred Income | 1,739,483 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = egbn_CommercialRealEstateInvestmentMember | 1,703,172 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = egbn_CommercialRealEstateInvestmentMember | 1,196,405 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = egbn_CommercialRealEstateInvestmentMember
Commercial Real Estate Owner Occupied [Member] | Pass [Member] |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Loans and Leases Receivable Net of Deferred Income | 478,486 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = egbn_CommercialRealEstateOwnerOccupiedMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember | 445,013 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = egbn_CommercialRealEstateOwnerOccupiedMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember | 298,968 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = egbn_CommercialRealEstateOwnerOccupiedMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember
Commercial Real Estate Owner Occupied [Member] | Watch and Special Mention [Member] |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Loans and Leases Receivable Net of Deferred Income | 7,677 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = egbn_CommercialRealEstateOwnerOccupiedMember / us-gaap_InternalCreditAssessmentAxis = egbn_WatchAndSpecialMentionMember | 9,677 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = egbn_CommercialRealEstateOwnerOccupiedMember / us-gaap_InternalCreditAssessmentAxis = egbn_WatchAndSpecialMentionMember | 14,703 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = egbn_CommercialRealEstateOwnerOccupiedMember / us-gaap_InternalCreditAssessmentAxis = egbn_WatchAndSpecialMentionMember
Commercial Real Estate Owner Occupied [Member] | Substandard [Member] |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Loans and Leases Receivable Net of Deferred Income | 6,840 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = egbn_CommercialRealEstateOwnerOccupiedMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember | 6,891 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = egbn_CommercialRealEstateOwnerOccupiedMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember | 7,323 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = egbn_CommercialRealEstateOwnerOccupiedMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember
Commercial Real Estate Owner Occupied [Member] |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Loans and Leases Receivable Net of Deferred Income | 493,003 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = egbn_CommercialRealEstateOwnerOccupiedMember | 461,581 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = egbn_CommercialRealEstateOwnerOccupiedMember | 320,994 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = egbn_CommercialRealEstateOwnerOccupiedMember
Residential Mortgage [Member] | Pass [Member] |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Loans and Leases Receivable Net of Deferred Income | 147,121 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = us-gaap_ResidentialMortgageMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember | 147,262 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = us-gaap_ResidentialMortgageMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember | 96,947 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = us-gaap_ResidentialMortgageMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember
Residential Mortgage [Member] | Watch and Special Mention [Member] |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Loans and Leases Receivable Net of Deferred Income | 750 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = us-gaap_ResidentialMortgageMember / us-gaap_InternalCreditAssessmentAxis = egbn_WatchAndSpecialMentionMember | 756 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = us-gaap_ResidentialMortgageMember / us-gaap_InternalCreditAssessmentAxis = egbn_WatchAndSpecialMentionMember | 786 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = us-gaap_ResidentialMortgageMember / us-gaap_InternalCreditAssessmentAxis = egbn_WatchAndSpecialMentionMember
Residential Mortgage [Member] | Substandard [Member] |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Loans and Leases Receivable Net of Deferred Income |  |  | 113 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = us-gaap_ResidentialMortgageMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember
Residential Mortgage [Member] |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Loans and Leases Receivable Net of Deferred Income | 147,871 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = us-gaap_ResidentialMortgageMember | 148,018 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = us-gaap_ResidentialMortgageMember | 97,846 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = us-gaap_ResidentialMortgageMember
Home Equity Line of Credit [Member] | Pass [Member] |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Loans and Leases Receivable Net of Deferred Income | 117,936 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = us-gaap_HomeEquityMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember | 119,420 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = us-gaap_HomeEquityMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember | 106,170 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = us-gaap_HomeEquityMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember
Home Equity Line of Credit [Member] | Watch and Special Mention [Member] |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Loans and Leases Receivable Net of Deferred Income | 1,718 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = us-gaap_HomeEquityMember / us-gaap_InternalCreditAssessmentAxis = egbn_WatchAndSpecialMentionMember | 1,718 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = us-gaap_HomeEquityMember / us-gaap_InternalCreditAssessmentAxis = egbn_WatchAndSpecialMentionMember | 1,913 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = us-gaap_HomeEquityMember / us-gaap_InternalCreditAssessmentAxis = egbn_WatchAndSpecialMentionMember
Home Equity Line of Credit [Member] | Substandard [Member] |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Loans and Leases Receivable Net of Deferred Income | 889 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = us-gaap_HomeEquityMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember | 1,398 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = us-gaap_HomeEquityMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember | 756 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = us-gaap_HomeEquityMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember
Home Equity Line of Credit [Member] |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Loans and Leases Receivable Net of Deferred Income | 120,543 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = us-gaap_HomeEquityMember | 122,536 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = us-gaap_HomeEquityMember | 108,839 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = us-gaap_HomeEquityMember
Consumer, Other [Member] | Pass [Member] |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Loans and Leases Receivable Net of Deferred Income | 98,697 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = egbn_ConsumerOtherMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember | 109,343 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = egbn_ConsumerOtherMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember | 5,998 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = egbn_ConsumerOtherMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember
Consumer, Other [Member] | Substandard [Member] |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Loans and Leases Receivable Net of Deferred Income | 10 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = egbn_ConsumerOtherMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember | 59 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = egbn_ConsumerOtherMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember | 60 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = egbn_ConsumerOtherMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember
Consumer, Other [Member] |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Loans and Leases Receivable Net of Deferred Income | 98,707 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = egbn_ConsumerOtherMember | 109,402 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = egbn_ConsumerOtherMember | 6,058 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancialInstrumentAxis = egbn_ConsumerOtherMember
Construction Loans [Member] | Pass [Member] |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Loans and Leases Receivable Net of Deferred Income | 889,346 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConstructionLoansMember | 827,503 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConstructionLoansMember | 601,711 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConstructionLoansMember
Construction Loans [Member] | Watch and Special Mention [Member] |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Loans and Leases Receivable Net of Deferred Income | 8,225 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_InternalCreditAssessmentAxis = egbn_WatchAndSpecialMentionMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConstructionLoansMember | 9,720 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_InternalCreditAssessmentAxis = egbn_WatchAndSpecialMentionMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConstructionLoansMember | 8,577 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_InternalCreditAssessmentAxis = egbn_WatchAndSpecialMentionMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConstructionLoansMember
Construction Loans [Member] | Substandard [Member] |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Loans and Leases Receivable Net of Deferred Income | 14,000 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConstructionLoansMember | 14,241 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConstructionLoansMember | 19,159 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConstructionLoansMember
Construction Loans [Member] |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Loans and Leases Receivable Net of Deferred Income | 911,571 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_LongtermDebtTypeAxis = us-gaap_ConstructionLoansMember | 851,464 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_LongtermDebtTypeAxis = us-gaap_ConstructionLoansMember | 629,447 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_LongtermDebtTypeAxis = us-gaap_ConstructionLoansMember
Pass [Member] |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Loans and Leases Receivable Net of Deferred Income | 4,343,418 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember | 4,202,744 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember | 2,938,847 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_InternalCreditAssessmentAxis = us-gaap_PassMember
Watch and Special Mention [Member] |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Loans and Leases Receivable Net of Deferred Income | 58,154 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_InternalCreditAssessmentAxis = egbn_WatchAndSpecialMentionMember | 64,345 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_InternalCreditAssessmentAxis = egbn_WatchAndSpecialMentionMember | 67,882 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_InternalCreditAssessmentAxis = egbn_WatchAndSpecialMentionMember
Substandard [Member] |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Loans and Leases Receivable Net of Deferred Income | $ 43,321 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember | $ 45,310 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember | $ 57,246 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember

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- Definition Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=35738203&loc=d3e5074-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=28367877&loc=d3e4428-111522 + Details
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