Business and Nature of Operations	12 Months Ended
Dec. 31, 2017
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Business and Nature of Operations	(1) Business and Nature of Operations Everbridge, Inc., a Delaware corporation (together with its wholly-owned subsidiaries, referred to as “Everbridge” or the “Company”), is a global software company that provides critical communications and enterprise safety applications that enable customers to automate and accelerate the process of keeping people safe and businesses running during critical events. The Company’s SaaS-based platform enables the Company’s customers to quickly and reliably deliver messaging to a large group of people during critical situations. The Company’s enterprise applications, such as Mass Notification, Incident Management, IT Alerting, Safety Connection, Community Engagement, Secure Messaging, Crisis Commander and Visual Command Center, automate numerous critical communications processes. The Company generates revenue primarily from subscription fees to the Company’s enterprise applications. The Company has operations in the United States, Sweden, England and China. Initial and Follow-On Public Offering On September 21, 2016, the Company completed an initial public offering, or IPO, in which the Company sold 6,250,000 shares of its common stock at the public offering price of $12.00 per share. The Company received net proceeds of $66.1 million, after deducting underwriting discounts and commissions and offering expenses paid and payable by the Company, from sales of its shares in the IPO. In connection with the closing of the IPO, all shares of Class A common stock then outstanding were converted into 1,164,105 shares of common stock and all shares of convertible preferred stock then outstanding were converted into 8,354,963 shares of common stock, in each case on a one-to-one basis. In April 2017, the Company completed a follow-on public offering in which the Company sold 553,825 shares of its common stock, which included 26,825 shares sold pursuant to the exercise by the underwriters of an option to purchase additional shares, at a public offering price of $19.85 per share. In addition, 3,162,164 shares of the Company’s common stock were sold by selling stockholders of the Company, which included 73,000 shares sold pursuant to the exercise of employee stock options by certain selling stockholders. The Company received net proceeds of $9.9 million, after deducting underwriting discounts and commissions and offering expenses paid and payable by the Company. The Company did not receive any proceeds from the sales by the selling stockholders.

(1) Business and Nature of Operations

Everbridge, Inc., a Delaware corporation (together with its wholly-owned subsidiaries, referred to as “Everbridge” or the “Company”), is a global software company that provides critical communications and enterprise safety applications that enable customers to automate and accelerate the process of keeping people safe and businesses running during critical events. The Company’s SaaS-based platform enables the Company’s customers to quickly and reliably deliver messaging to a large group of people during critical situations. The Company’s enterprise applications, such as Mass Notification, Incident Management, IT Alerting, Safety Connection, Community Engagement, Secure Messaging, Crisis Commander and Visual Command Center, automate numerous critical communications processes. The Company generates revenue primarily from subscription fees to the Company’s enterprise applications. The Company has operations in the United States, Sweden, England and China.

Initial and Follow-On Public Offering

On September 21, 2016, the Company completed an initial public offering, or IPO, in which the Company sold 6,250,000 shares of its common stock at the public offering price of $12.00 per share. The Company received net proceeds of $66.1 million, after deducting underwriting discounts and commissions and offering expenses paid and payable by the Company, from sales of its shares in the IPO. In connection with the closing of the IPO, all shares of Class A common stock then outstanding were converted into 1,164,105 shares of common stock and all shares of convertible preferred stock then outstanding were converted into 8,354,963 shares of common stock, in each case on a one-to-one basis.

In April 2017, the Company completed a follow-on public offering in which the Company sold 553,825 shares of its common stock, which included 26,825 shares sold pursuant to the exercise by the underwriters of an option to purchase additional shares, at a public offering price of $19.85 per share. In addition, 3,162,164 shares of the Company’s common stock were sold by selling stockholders of the Company, which included 73,000 shares sold pursuant to the exercise of employee stock options by certain selling stockholders. The Company received net proceeds of $9.9 million, after deducting underwriting discounts and commissions and offering expenses paid and payable by the Company. The Company did not receive any proceeds from the sales by the selling stockholders.