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Business Combination - Additional Information (Details) - USD ($) |  | 1 Months Ended | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | ---
Feb. 12, 2026 | Feb. 12, 2026 | Jun. 30, 2026 | Mar. 31, 2026 | Jun. 30, 2025 | Mar. 31, 2025 | Jun. 30, 2026 | Jun. 30, 2025 | Dec. 31, 2025
Business Combination [Line Items] |  |  |  |  |  |  |  |  |
Ordinary shares, par value (in dollars per share) |  |  | $ 0.01 |  |  |  | $ 0.01 |  | $ 0.01
Recognized share-based compensation expense | $ 18,400,000 |  |  |  |  |  | $ 400,000 |  |
Total revenues |  |  | $ 496,009,000 |  | $ 390,657,000 |  | 888,920,000 | $ 697,167,000 |
Net Income (Loss) |  |  | 501,000 | $ (66,480,000) | $ 87,098,000 | $ 22,464,000 | (65,979,000) | $ 109,562,000 |
Avadel Pharmaceuticals Plc |  |  |  |  |  |  |  |  |
Business Combination [Line Items] |  |  |  |  |  |  |  |  |
Issued ordinary share | $ 21 | $ 21 |  |  |  |  |  |  |
Ordinary shares, par value (in dollars per share) | 0.01 | 0.01 |  |  |  |  |  |  |
Potential additional cash payment per share upon achievement of certain specific milestone | $ 1.5 | $ 1.5 |  |  |  |  |  |  |
Contingent payments | $ 165,700,000 | $ 165,700,000 | 165,700,000 |  |  |  | 165,700,000 |  |
Contingent consideration liability | 107,700,000 | 107,700,000 |  |  |  |  |  |  |
Purchase price | 134,900,000 |  |  |  |  |  |  |  |
Recognized share-based compensation expense | 1,800,000 |  |  |  |  |  |  |  |
Total revenues |  |  | 96,600,000 |  |  |  | 136,100,000 |  |
Net Income (Loss) |  |  | (2,700,000) |  |  |  | 13,600,000 |  |
Deferred tax liability | 183,129,000 | 183,129,000 | 183,100,000 |  |  |  | 183,100,000 |  |
Deferred tax assets | 849,000 | 849,000 | 800,000 |  |  |  | 800,000 |  |
Uncertain tax position in connection with U.S. state tax position | 2,200,000 | 2,200,000 |  |  |  |  |  |  |
Adjustments to reduce deferred tax asset | 400,000 | 400,000 |  |  |  |  |  |  |
Adjustments in reduction of estimated value of goodwill | 1,800 | 1,800 |  |  |  |  |  |  |
Transaction costs |  |  | 1,100,000 |  |  |  | 1,100,000 |  |
Acquisition related costs |  |  | 35,900,000 |  |  |  | 35,900,000 |  |
Direct one-time transaction costs |  | $ 64,600,000 | $ 77,700,000 |  |  |  | $ 77,700,000 |  |
Direct one-time acquisition transaction costs | 45,600,000 |  |  |  |  |  |  |  | $ 9,700,000
Acceleration of unvested share-based compensation awards | $ 20,200,000 |  |  |  |  |  |  |  |

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