Commitments and Contingencies	12 Months Ended
Dec. 31, 2022
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	(19) Commitments and Contingencies For a summary of the Company’s debt and lease obligations, see Notes 9 and 18, respectively. Litigation In April 2022, certain former shareholders of Anvil filed a claim in the United Kingdom Commercial Court against Everbridge Holdings Limited and Everbridge, Inc. The suit claims that these companies breached certain provisions of the acquisition documents relating to the issuance of Everbridge, Inc. stock, which formed part of the consideration payable for the stock in Anvil. The claimants are seeking damages for losses they purport to have suffered as a result of these alleged breaches. In April 2022, a putative class action lawsuit was filed in the United States District Court for the Central District of California against the Company, Jaime Ellertson, Patrick Brickley, and David Meredith (the Company’s former Chief Executive Officer) by Sylebra Capital Partners Master Fund Ltd, Sylebra Capital Parc Master Fund, and Sylebra Capital Menlo Master Fund. (collectively, “Sylebra”). In September 2022, Sylebra filed an amended and restated complaint. The lawsuit alleges violations of the federal securities laws by the Company and certain of its officers and directors arising out of purported misrepresentations in the information the Company provided to investors regarding the Company’s organic and inorganic revenue growth, and the status of integrating acquisitions, and the impact of COVID-19 on the Company’s business, which allegedly artificially inflated the price of the Company’s stock during the period November 4, 2019 to February 24, 2022. The Company is not able to estimate the amount of the loss allegedly suffered by members of the putative class or the amount of legal costs and internal efforts associated with defending the Company and the Company’s officers and directors. The Company believes that the allegations and claims made in this lawsuit are wholly without merit and intends to defend the action vigorously. In October 2022, the Company filed a motion to dismiss the lawsuit on various grounds, including failure to plead any actionable misstatement or omission, failure to establish scienter, and failure to meet the pleading requirements of the Private Securities Litigation Reform Act and other applicable law. Even if the Company were to prevail, this litigation could continue to be costly and time-consuming and divert the attention of the Company’s management and key personnel from the Company’s business operations. During the course of the litigation, the Company anticipates announcements of the results of hearings and motions, and other interim developments related to the litigation. If securities analysts or investors regard these announcements as negative, the market price of the Company’s common stock may decline. If the Company is unsuccessful in defending itself in this litigation, this lawsuit could materially and adversely affect the Company’s business, financial condition, results of operations and cash flows. In June 2022, a purported shareholder derivative action was filed in the United States District Court for the Central District of California against certain current and former directors and officers of the Company, naming the Company as a nominal defendant. The suit claims that these individuals breached their fiduciary duties to the Company’s shareholders and to the Company generally in connection with the same set of circumstances alleged in the class action lawsuit. The complaint is derivative in nature and does not seek relief from the Company. This action has been stayed pending the outcome of the motion to dismiss filed in the putative class action lawsuit brought by Sylebra. From time to time the Company may become involved in other legal proceedings or be subject to claims arising in the ordinary course of business. Although the results of ordinary course litigation and claims cannot be predicted with certainty, the Company currently believes that the final outcome of these ordinary course matters will not have a material adverse effect on its business, financial condition, results of operations or cash flows. Regardless of the outcome, litigation can have an adverse impact because of defense and settlement costs, diversion of management resources and other factors. Employee Contracts The Company has entered into employment contracts with certain of the Company’s executive officers which provide for at-will employment. However, under the provisions of the contracts, the Company would incur severance obligations of up to twelve months of the executive’s annual base salary for certain events, such as involuntary terminations.

Commitments and Contingencies

12 Months Ended

Dec. 31, 2022

Commitments and Contingencies Disclosure [Abstract]

(19) Commitments and Contingencies

For a summary of the Company’s debt and lease obligations, see Notes 9 and 18, respectively.

Litigation

In April 2022, certain former shareholders of Anvil filed a claim in the United Kingdom Commercial Court against Everbridge Holdings Limited and Everbridge, Inc. The suit claims that these companies breached certain provisions of the acquisition documents relating to the issuance of Everbridge, Inc. stock, which formed part of the consideration payable for the stock in Anvil. The claimants are seeking damages for losses they purport to have suffered as a result of these alleged breaches.

In April 2022, a putative class action lawsuit was filed in the United States District Court for the Central District of California against the Company, Jaime Ellertson, Patrick Brickley, and David Meredith (the Company’s former Chief Executive Officer) by Sylebra Capital Partners Master Fund Ltd, Sylebra Capital Parc Master Fund, and Sylebra Capital Menlo Master Fund. (collectively, “Sylebra”). In September 2022, Sylebra filed an amended and restated complaint. The lawsuit alleges violations of the federal securities laws by the Company and certain of its officers and directors arising out of purported misrepresentations in the information the Company provided to investors regarding the Company’s organic and inorganic revenue growth, and the status of integrating acquisitions, and the impact of COVID-19 on the Company’s business, which allegedly artificially inflated the price of the Company’s stock during the period November 4, 2019 to February 24, 2022. The Company is not able to estimate the amount of the loss allegedly suffered by members of the putative class or the amount of legal costs and internal efforts associated with defending the Company and the Company’s officers and directors. The Company believes that the allegations and claims made in this lawsuit are wholly without merit and intends to defend the action vigorously. In October 2022, the Company filed a motion to dismiss the lawsuit on various grounds, including failure to plead any actionable misstatement or omission, failure to establish scienter, and failure to meet the pleading requirements of the Private Securities Litigation Reform Act and other applicable law. Even if the Company were to prevail, this litigation could continue to be costly and time-consuming and divert the attention of the Company’s management and key personnel from the Company’s business operations. During the course of the litigation, the Company anticipates announcements of the results of hearings and motions, and other interim developments related to the litigation. If securities analysts or investors regard these announcements as negative, the market price of the Company’s common stock may decline. If the Company is unsuccessful in defending itself in this litigation, this lawsuit could materially and adversely affect the Company’s business, financial condition, results of operations and cash flows.

In June 2022, a purported shareholder derivative action was filed in the United States District Court for the Central District of California against certain current and former directors and officers of the Company, naming the Company as a nominal defendant. The suit claims that these individuals breached their fiduciary duties to the Company’s shareholders and to the Company generally in connection with the same set of circumstances alleged in the class action lawsuit. The complaint is derivative in nature and does not seek relief from the Company. This action has been stayed pending the outcome of the motion to dismiss filed in the putative class action lawsuit brought by Sylebra.

From time to time the Company may become involved in other legal proceedings or be subject to claims arising in the ordinary course of business. Although the results of ordinary course litigation and claims cannot be predicted with certainty, the Company currently believes that the final outcome of these ordinary course matters will not have a material adverse effect on its business, financial condition, results of operations or cash flows. Regardless of the outcome, litigation can have an adverse impact because of defense and settlement costs, diversion of management resources and other factors.

Employee Contracts

The Company has entered into employment contracts with certain of the Company’s executive officers which provide for at-will employment. However, under the provisions of the contracts, the Company would incur severance obligations of up to twelve months of the executive’s annual base salary for certain events, such as involuntary terminations.