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Revenue - Narrative (Details)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
USD ($)
milestone
Sep. 30, 2021
USD ($)
Dec. 31, 2020
USD ($)
Feb. 29, 2020
USD ($)
Dec. 31, 2017
USD ($)
Disaggregation of Revenue [Line Items]          
Deferred revenue, upfront payment $ 7,939   $ 8,939    
Current contract liability 7,939   8,370    
Non-current contract liability $ 0   569    
Licensing agreements | EuroFarma          
Disaggregation of Revenue [Line Items]          
Deferred revenue, upfront payment         $ 2,500
Deferred revenue, enrollment milestone   $ 1,250   $ 1,000  
Number of enrollment milestones included in transaction price | milestone 2        
Current contract liability $ 756   759    
Non-current contract liability 0   $ 569    
Revenue entitled to receive upon various development milestones 1,500        
Revenue entitled to receive upon achieving cumulative net sales targets 21,400        
Cumulative net sales target threshold 100,000        
Incremental cumulative net sales target threshold $ 100,000