Share Based Compensation Arrangement By Share Based Payment Award, Awards With No Grant Date

No definition available.

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- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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- Definition

Aggregate number of common shares reserved for future issuance.

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Face amount or stated value per share of common stock.

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- Definition

Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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- Definition

Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Number of shares authorized for issuance under share-based payment arrangement.

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- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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- Definition

Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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- Definition

Percentage of vesting of award under share-based payment arrangement.

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- Definition

Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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- Definition

Purchase price of common stock expressed as a percentage of its fair value.

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No definition available.

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Share-Based Compensation - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Jun. 26, 2023	Apr. 03, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense	$ 13,962
Weighted average period for unrecognized expense (in years)	2 years 6 months
Stock-based compensation expense	$ 15,811	$ 7,013	$ 8,872
Aggregate intrinsic value of options exercised	$ 2,612	$ 877	$ 249
Grant date fair value of options granted (in usd per share)	$ 9.14	$ 4.02	$ 5.36
Ordinary shares, nominal value (in usd per share)	$ 0.01	$ 0.01			$ 0.01	$ 0.01
Inducement Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of shares reserved and available for issuance (in shares)	1,500,000
Shares available for issuance (in shares)	348,000
2017 Avadel Employee Share Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for issuance (in shares)	1,000,000
Ordinary shares, nominal value (in usd per share)	$ 0.01
Purchase price of common stock, percentage	85.00%
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 6,996
Weighted average grant fair value of free share awards (in usd per share)			$ 8.20
Awards that did not have an accounting grant date (in shares)	555,000
Granted (in shares)	0	0
Performance Shares \| Share-based Payment Arrangement, Employee
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)	47,000	75,000	17,000
Performance Shares \| Vest Upon the Achievement of Certain Regulatory Milestones
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	50.00%
Performance Shares \| Vest One Year Following Achievement of Milestones
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	50.00%
Vesting period (in years)	1 year
Performance Shares \| Vest Upon Achievement of Certain Corporate Objectives
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	50.00%
Performance Shares \| Vest One Year Following Achievement of Certain Corporate Objectives
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	50.00%
Vesting period (in years)	1 year
Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)	4 years
Number of shares authorized (in shares)	6,883,000
Expiration period (in years)	10 years
Stock Option \| Board of Directors
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)			1 year	3 years
Expiration period (in years)			10 years	10 years
Restricted Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average grant fair value of free share awards (in usd per share)	$ 0		$ 8.22
Granted (in shares)	0	0
Restricted Share Awards Granted to Employees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)	4 years
Restricted Share Awards Granted to Employees \| Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	25.00%
Restricted Share Awards Granted to Employees \| Tranche Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	25.00%
Restricted Share Awards Granted to Employees \| Tranche Three
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	25.00%
Restricted Share Awards Granted to Employees \| Tranche Four
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	25.00%