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SIGNIFICANT EVENTS DURING THE CURRENT REPORTING PERIOD - Movantik Transaction (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Apr. 01, 2020
Jun. 30, 2020
Jun. 30, 2020
Dec. 31, 2019
Disclosure of detailed information about intangible assets [line items]        
Upfront payment for acquisition of rights   $ 52,500 $ 52,633  
Intangible assets   79,519 79,519 $ 16,927
Aemcolo        
Disclosure of detailed information about intangible assets [line items]        
Recoverable amount of intangible asset   $ 10,500 10,500  
Impairment loss     $ 800  
Aemcolo | Weighted average        
Disclosure of detailed information about intangible assets [line items]        
Discount rate applied to asset's cash flows   17.20% 17.20% 15.40%
AstraZeneca AB | Movantik        
Disclosure of detailed information about intangible assets [line items]        
Upfront payment for acquisition of rights $ 52,500      
Agreement amount payable for acquisition of rights 15,500      
Intangible assets $ 65,000      
Useful life of assets (in years) 10 years 6 months      
Fee on net revenue for services received (as a percent) 4.50%