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GOODWILL AND INTANGIBLE ASSETS - Goodwill (Details) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2024 segment | Dec. 31, 2022 USD ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2013 USD ($)
Goodwill [Line Items] |  |  |  |
Number of operating segments | segment | 2 |  |  |
Number of reporting units | segment | 2 |  |  |
BioSante Pharmaceuticals |  |  |  |
Goodwill [Line Items] |  |  |  |
Acquisition of goodwill |  |  |  | $ 1.8
WellSpring |  |  |  |
Goodwill [Line Items] |  |  |  |
Acquisition of goodwill |  |  | $ 1.7 |
Novitium |  |  |  |
Goodwill [Line Items] |  |  |  |
Acquisition of goodwill |  | $ 24.6 |  |

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