Document and Entity Information - shares
6 Months Ended
Jun. 30, 2019
Aug. 01, 2019
Document And Entity Information [Abstract]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Jun. 30, 2019  
Document Fiscal Year Focus 2019  
Document Fiscal Period Focus Q2  
Trading Symbol EVBG  
Entity Registrant Name EVERBRIDGE, INC.  
Entity Central Index Key 0001437352  
Current Fiscal Year End Date --12-31  
Entity Filer Category Large Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Common Stock, Shares Outstanding   33,563,285
Entity Current Reporting Status Yes  
Entity Shell Company false  
Entity File Number 001-37874  
Entity Tax Identification Number 262919312  
Entity Address, Address Line One 25 Corporate Drive  
Entity Address, Address Line Two Suite 400  
Entity Address, City or Town Burlington  
Entity Address, State or Province Massachusetts  
Entity Address, Postal Zip Code 01803  
City Area Code 818  
Local Phone Number 230-9700