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Fair Value - Additional Information (Details)		3 Months Ended		9 Months Ended
Fair Value - Additional Information (Details)	Feb. 12, 2026 USD ($)	Sep. 30, 2026 USD ($)	Sep. 30, 2025 USD ($)	Sep. 30, 2026 USD ($)	Sep. 30, 2025 USD ($)	Dec. 31, 2025 USD ($)
Fair Value
Transfers between Level 1 to Level 2				$ 0
Transfers between Level 2 to Level 1				0
Fair value of contingent consideration		$ 136,922,000		136,922,000		$ 0
Fair value of the contingent consideration increased		600,000		27,400,000
Change in contingent consideration		568,000	$ 0	26,982,000	$ 0
Recognized share-based compensation expense	$ 18,400,000	$ 100,000		$ 400,000
Avadel Pharmaceuticals Plc
Fair Value
Recognized share-based compensation expense	$ 1,800,000
Avadel Pharmaceuticals Plc \| Minimum
Fair Value
Percentage of success of achieving the CVR Milestone				75.00%
Avadel Pharmaceuticals Plc \| Maximum
Fair Value
Percentage of success of achieving the CVR Milestone				90.00%
Avadel Pharmaceuticals Plc \| Discount Rate
Fair Value
Discount rate		0.0708		0.0708
Fair Value Level 2
Fair Value
Unrelaised amount				$ 1,511,800,000