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Goodwill and Intangible Assets - Amortization Expense (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2023 | Sep. 30, 2023 | Jun. 30, 2023 | Mar. 31, 2023 | Dec. 31, 2022 | Sep. 30, 2022 | Jun. 30, 2022 | Mar. 31, 2022 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Goodwill and Intangible Assets |  |  |  |  |  |  |  |  |  |  |
Amortization and impairment expense | $ 34,514 | $ 36,317 | $ 37,463 | $ 37,466 | $ 42,279 | $ 37,552 | $ 37,501 | $ 18,923 | $ 145,760 | $ 136,255 | $ 67,181
Increase in net income | $ 31,940 | $ 20,634 | $ 13,007 | $ (17,426) | $ (7,199) | $ 457 | $ (5,191) | $ (13,069) | $ 48,155 | $ (25,002) | $ 71,517
Impact on earnings per share - basic | $ 0.99 | $ 0.61 | $ 0.38 | $ (0.51) | $ (0.21) | $ 0.01 | $ (0.15) | $ (0.39) | $ 1.43 | $ (0.74) | $ 2.05
Impact on earnings per share - diluted | $ 0.82 | $ 0.53 | $ 0.34 | $ (0.51) | $ (0.21) | $ 0.01 | $ (0.15) | $ (0.39) | $ 1.29 | $ (0.74) | $ 1.86
Belbuca |  |  |  |  |  |  |  |  |  |  |
Goodwill and Intangible Assets |  |  |  |  |  |  |  |  |  |  |
Amortization and impairment expense |  |  |  |  |  |  |  |  | $ 75,393 | $ 58,428 |
Amortization period (years) | 4 years 9 months 18 days |  |  |  |  |  |  |  | 4 years 9 months 18 days |  |
Nucynta Products |  |  |  |  |  |  |  |  |  |  |
Goodwill and Intangible Assets |  |  |  |  |  |  |  |  |  |  |
Amortization and impairment expense |  |  |  |  |  |  |  |  | $ 63,082 | 67,181 | $ 67,181
Amortization period (years) | 8 years 6 months |  |  |  |  |  |  |  | 8 years 6 months |  |
Nucynta Products | Change in estimated useful life of the underlying intangible asset |  |  |  |  |  |  |  |  |  |  |
Goodwill and Intangible Assets |  |  |  |  |  |  |  |  |  |  |
Amortization period (years) |  | 8 years 6 months | 8 years |  |  |  |  |  |  |  |
Decrease of amortization expense |  |  |  |  |  |  |  |  | $ 4,099 |  |
Increase in net income |  |  |  |  |  |  |  |  | $ 3,037 |  |
Impact on earnings per share - basic |  |  |  |  |  |  |  |  | $ 0.09 |  |
Impact on earnings per share - diluted |  |  |  |  |  |  |  |  | $ 0.07 |  |
Symproic |  |  |  |  |  |  |  |  |  |  |
Goodwill and Intangible Assets |  |  |  |  |  |  |  |  |  |  |
Amortization and impairment expense |  |  |  |  |  |  |  |  | $ 7,285 | 5,646 |
Amortization period (years) | 9 years 7 months 6 days |  |  |  |  |  |  |  | 9 years 7 months 6 days |  |
Elyxyb |  |  |  |  |  |  |  |  |  |  |
Goodwill and Intangible Assets |  |  |  |  |  |  |  |  |  |  |
Amortization and impairment expense |  |  |  |  |  |  |  |  |  | $ 5,000 |
Amortization expense |  |  |  |  |  |  |  |  | $ 214 |  |
Impairment expense |  |  |  |  | $ 4,786 |  |  |  | $ 4,786 |  |
Impairment, Intangible Asset, Finite-Lived, Statement of Income or Comprehensive Income [Extensible Enumeration] |  |  |  |  |  |  |  |  | Amortization and impairment expense |  |
Severance or employee benefit expense recognized |  |  |  |  | $ 0 |  |  |  |  |  |

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