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Cover - shares
 9 Months Ended
Sep. 30, 2019
Oct. 31, 2019
Cover [Abstract]    
Document Type 10-Q  
Amendment Flag false  
Document Quarterly Report true  
Document Transition Report false  
Document Period End Date Sep. 30, 2019  
Document Fiscal Period Focus Q3  
Document Fiscal Year Focus 2019  
Current Fiscal Year End Date --12-31  
Entity File Number 0-25923  
Entity Registrant Name Eagle Bancorp, Inc.  
Entity Central Index Key 0001050441  
Entity Tax Identification Number 52-2061461  
Entity Incorporation, State or Country Code MD  
Entity Address, Address Line One 7830 Old Georgetown Road  
Entity Address, Address Line Two Third Floor  
Entity Address, City or Town Bethesda  
Entity Address, State or Province MD  
Entity Address, Postal Zip Code 20814  
City Area Code (301)  
Local Phone Number 986-1800  
Title of 12(b) Security Common Stock, $0.01 par value  
Trading Symbol EGBN  
Security Exchange Name NASDAQ  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Large Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   33,583,928