LICENSE AGREEMENTS (Details)
$ in Millions
3 Months Ended 12 Months Ended
Mar. 31, 2021
USD ($)
Mar. 31, 2020
USD ($)
Dec. 31, 2016
USD ($)
Dec. 31, 2014
Dec. 31, 2013
USD ($)
May 06, 2020
license_agreement
Assets Sold under Agreements to Repurchase [Line Items]            
Number of amended and restated license agreements | license_agreement           2
Accrued milestone fees $ 0.0 $ 0.0        
Minimum            
Assets Sold under Agreements to Repurchase [Line Items]            
Royalty payment percentage       5.00%    
Maximum            
Assets Sold under Agreements to Repurchase [Line Items]            
Royalty payment percentage       15.00%    
Alba Agreement            
Assets Sold under Agreements to Repurchase [Line Items]            
License fees     $ 0.5      
Milestone payment     1.5      
Sales range minimum     100.0      
Sales range maximum     1,500.0      
Alba Agreement | License and Service            
Assets Sold under Agreements to Repurchase [Line Items]            
License and services revenue     $ 150.0      
Seachaid Agreement            
Assets Sold under Agreements to Repurchase [Line Items]            
License fees         $ 0.2  
Milestone payment         6.0  
Sales range minimum         1.0  
Sales range maximum         $ 2.5  
Cedars License            
Assets Sold under Agreements to Repurchase [Line Items]            
Milestone payment 9.4          
U.S and EU | Amunix License, GLP-1            
Assets Sold under Agreements to Repurchase [Line Items]            
Milestone payment 70.4          
U.S and EU | Amunix License, GLP-2            
Assets Sold under Agreements to Repurchase [Line Items]            
Milestone payment 60.1          
China and Related Territories | Amunix License, GLP-1            
Assets Sold under Agreements to Repurchase [Line Items]            
Milestone payment 20.5          
South Korea and Eastern Asia | Amunix License, GLP-2            
Assets Sold under Agreements to Repurchase [Line Items]            
Milestone payment $ 20.5