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INTANGIBLE ASSETS AND GOODWILL - Summary of Gross Carrying Amounts and Net Book Values of Intangible Assets and Goodwill (Details) - USD ($) $ in Thousands | Sep. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Intangible assets |  |
Gross Carrying Amount | $ 485,736 | $ 251,736
Accumulated Amortization | (76,492) | (53,740)
Impairment | (238,831) |
Total | $ 170,413 | 197,996
INDOCIN | Product Rights |  |
Intangible assets |  |
Remaining Useful Life (In years) | 8 years 7 months 6 days |
Gross Carrying Amount | $ 154,100 | 154,100
Accumulated Amortization | (43,126) | (33,495)
Impairment | (52,463) |
Total | $ 58,511 | 120,605
ROLVEDON | Product Rights |  |
Intangible assets |  |
Remaining Useful Life (In years) | 9 years 9 months 18 days |
Gross Carrying Amount | $ 234,000 | 0
Accumulated Amortization | (3,900) | 0
Impairment | (157,095) |
Total | $ 73,005 | 0
Otrexup | Product Rights |  |
Intangible assets |  |
Remaining Useful Life (In years) | 6 years 2 months 12 days |
Gross Carrying Amount | $ 44,086 | 44,086
Accumulated Amortization | (9,644) | (5,511)
Impairment | (22,946) |
Total | $ 11,496 | 38,575
Sympazan | Product Rights |  |
Intangible assets |  |
Remaining Useful Life (In years) | 11 years 1 month 6 days |
Gross Carrying Amount | $ 14,550 | 14,550
Accumulated Amortization | (1,111) | (202)
Impairment | 0 |
Total | $ 13,439 | 14,348
SPRIX | Product Rights |  |
Intangible assets |  |
Remaining Useful Life (In years) | 3 years 7 months 6 days |
Gross Carrying Amount | $ 39,000 | 39,000
Accumulated Amortization | (18,711) | (14,532)
Impairment | (6,327) |
Total | $ 13,962 | $ 24,468

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