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BUSINESS COMBINATION (Details)
$ / shares in Units, $ in Thousands
12 Months Ended
Nov. 19, 2021
USD ($)
$ / shares
shares
Dec. 31, 2021
USD ($)
shares
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Business acquisition        
Acquisition, net of cash acquired   $ 84,494 $ 0 $ 0
Business acquisition purchase consideration        
Fair value of restricted shares   91,199 0 0
Fair value of contingent consideration in a business combination   $ 30,500 $ 0 $ 0
Novitium        
Business acquisition        
Shares issued in acquisition (in shares) | shares 2,466,654 2,500,000    
Closing stock price | $ / shares $ 43.54      
Additional contingent consideration $ 46,500 $ 46,500    
Business acquisition purchase consideration        
Cash consideration 88,076      
Repayment of Novitium debts 8,493      
Fair value of restricted shares 91,199      
Fair value of contingent consideration in a business combination 30,500 31,000    
Gross consideration 218,268      
Cash acquired 12,076      
Net consideration $ 206,192      
Transaction costs   $ 9,400    
Novitium | Minimum        
Business acquisition purchase consideration        
Restriction period for shares issued 3 months      
Novitium | Maximum        
Business acquisition purchase consideration        
Restriction period for shares issued 24 months      
Novitium | Measurement Input, Stock Volatility | Minimum        
Business acquisition purchase consideration        
Unobservable inputs 65      
Novitium | Measurement Input, Stock Volatility | Maximum        
Business acquisition purchase consideration        
Unobservable inputs 71      
Novitium | Measurement Input, Discounted Lack of Marketability | Minimum        
Business acquisition purchase consideration        
Unobservable inputs 7.5      
Novitium | Measurement Input, Discounted Lack of Marketability | Maximum        
Business acquisition purchase consideration        
Unobservable inputs 21.5