LICENSE AGREEMENTS (Details) - USD ($)
6 Months Ended 12 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Dec. 31, 2016
Dec. 31, 2014
Dec. 31, 2013
Assets Sold under Agreements to Repurchase [Line Items]          
Royalty payment expiration requirement       10 years  
Accrued milestone fees $ 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     $ 500,000    
Milestone payment     1,500,000    
Sales range minimum     100,000,000    
Sales range maximum     1,500,000,000    
Alba Agreement | License and Service          
Assets Sold under Agreements to Repurchase [Line Items]          
License and services revenue     150,000,000    
Alba Agreement | License          
Assets Sold under Agreements to Repurchase [Line Items]          
License costs     2,500,000    
Milestone fee free sales target value     $ 1,500,000,000    
Seachaid Agreement          
Assets Sold under Agreements to Repurchase [Line Items]          
License fees         $ 200,000
Milestone payment         6,000,000
Sales range minimum         1,000,000
Sales range maximum         $ 2,500,000
Cedars License          
Assets Sold under Agreements to Repurchase [Line Items]          
Milestone payment 9,350,000        
U.S and EU | Amunix License, GLP-1          
Assets Sold under Agreements to Repurchase [Line Items]          
Milestone payment 70,350,000        
U.S and EU | Amunix License, GLP-2          
Assets Sold under Agreements to Repurchase [Line Items]          
Milestone payment 60,100,000        
China and Related Territories | Amunix License, GLP-1          
Assets Sold under Agreements to Repurchase [Line Items]          
Milestone payment 20,450,000        
South Korea and Eastern Asia | Amunix License, GLP-2          
Assets Sold under Agreements to Repurchase [Line Items]          
Milestone payment $ 20,450,000