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Document and Entity Information - USD ($)
$ in Billions
 12 Months Ended
Dec. 31, 2023
Apr. 23, 2024
Jun. 30, 2023
Cover [Abstract]      
Document Type 10-K/A    
Amendment Flag true    
Amendment Description As previously announced, on February 4, 2024, Everbridge, Inc. (the “Company,” “Everbridge,” “we,” “us,” or “our”) entered into an Agreement and Plan of Merger (the “Original Merger Agreement”) with Project Emerson Parent, LLC (“Parent”) and Project Emerson Merger Sub, Inc. (“Merger Sub”), as amended and restated on February 29, 2024 (the “A&R Merger Agreement” and together with the Original Merger Agreement, the “Merger Agreement”). The Merger Agreement provides that, subject to the terms and conditions set forth in the Merger Agreement, Merger Sub will merge with and into Everbridge (the “Merger”), with Everbridge continuing as the surviving corporation of the Merger and a wholly owned subsidiary of Parent. Parent and Merger Sub are affiliates of Thoma Bravo Discover Fund IV, L.P. (the “Thoma Bravo Fund”), an investment fund managed by Thoma Bravo, L.P. On April 25, 2024, the Company held a special meeting of its stockholders (the “Special Meeting”) at which the Company’s stockholders approved, among other things, the Merger Agreement. The proposed Merger is targeted to close in the second quarter of 2024 and, in light of the proposed Merger, the Company currently does not anticipate holding an annual meeting of stockholders in 2024.This Amendment No. 1 to Form 10-K/A (the “Amendment”) amends the Annual Report on Form 10-K (the “Original 10-K”, and as amended by this Form 10-K/A, the “Form 10-K”) of the Company for the year ended December 31, 2023, which was originally filed with the Securities and Exchange Commission (the “SEC”) on February 27, 2024. This Amendment is being filed to amend Part III to include information required by Items 10 through 14. The information required by Items 10 through 14 of Part III was previously omitted from the Original 10-K in reliance on General Instruction G(3) to Form 10-K, which permits the information in the above-referenced items to be incorporated in the Form 10-K by reference from our definitive proxy statement if such statement is filed no later than 120 days after our fiscal year end. We are filing this Amendment to include Part III information in our Form 10-K because a definitive proxy statement containing this information will not be filed by us within 120 days after the end of the fiscal year covered by the Form 10-K. The reference on the cover of the Original 10-K to the incorporation by reference to portions of a definitive proxy statement or amendment to our Form 10-K into Part III of the Original 10-K is hereby deleted. In accordance with Rule 12b-15 under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), Part III, Items 10 through 14 of the Original 10-K are hereby amended and restated in their entirety. Pursuant to Rule 12b-15 under the Exchange Act, this Amendment also contains new certifications pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 from our principal executive officer and principal financial officer. As no financial statements are included in this Amendment and this Amendment does not contain or amend any disclosure with respect to Items 307 and 308 of Regulation S-K, paragraphs 3, 4 and 5 of the certifications have been omitted. Additionally, as no financial statements have been included in this Amendment, certifications pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 have been omitted.Except as specifically set forth herein, this Amendment does not amend or otherwise update any other information in the Original 10-K. Accordingly, this Amendment should be read in conjunction with the Original 10-K and with our filings with the SEC subsequent to the Original 10-K.    
Document Period End Date Dec. 31, 2023    
Document Fiscal Year Focus 2023    
Document Fiscal Period Focus FY    
Trading Symbol EVBG    
Entity Registrant Name Everbridge, Inc.    
Entity Central Index Key 0001437352    
Current Fiscal Year End Date --12-31    
Entity Well-known Seasoned Issuer Yes    
Entity Current Reporting Status Yes    
Entity Voluntary Filers No    
Entity Filer Category Large Accelerated Filer    
ICFR Auditor Attestation Flag true    
Document Financial Statement Error Correction false    
Entity Shell Company false    
Entity Emerging Growth Company false    
Entity Small Business false    
Entity Common Stock, Shares Outstanding   41,511,249  
Entity Public Float     $ 1.1
Entity Interactive Data Current Yes    
Document Annual Report true    
Document Transition Report false    
Entity File Number 001-37874    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 26-2919312    
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 MA    
Entity Address, Postal Zip Code 01803    
City Area Code 818    
Local Phone Number 230-9700    
Title of 12(b) Security Common Stock, $0.001 par value per share    
Security Exchange Name NASDAQ    
Auditor Firm ID 42    
Auditor Name Ernst & Young LLP    
Auditor Location Boston, Massachusetts    
Documents Incorporated by Reference

None.