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INTANGIBLE ASSETS - Summary of Gross Carrying Amounts and Net Book Values of Intangible Assets and Goodwill (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2023
Dec. 31, 2022
Intangible assets    
Gross Carrying Amount $ 251,736 $ 251,736
Accumulated Amortization (60,024) (53,740)
Total $ 191,712 197,996
INDOCIN | Product Rights    
Intangible assets    
Remaining Useful Life (In years) 9 years 1 month 6 days  
Gross Carrying Amount $ 154,100 154,100
Accumulated Amortization (36,705) (33,495)
Total $ 117,395 120,605
Otrexup | Product Rights    
Intangible assets    
Remaining Useful Life (In years) 6 years 8 months 12 days  
Gross Carrying Amount $ 44,086 44,086
Accumulated Amortization (6,888) (5,511)
Total $ 37,198 38,575
Sympazan | Product Rights    
Intangible assets    
Remaining Useful Life (In years) 11 years 7 months 6 days  
Gross Carrying Amount $ 14,550 14,550
Accumulated Amortization (505) (202)
Total $ 14,045 14,348
SPRIX | Product Rights    
Intangible assets    
Remaining Useful Life (In years) 4 years 1 month 6 days  
Gross Carrying Amount $ 39,000 39,000
Accumulated Amortization (15,926) (14,532)
Total $ 23,074 $ 24,468