LICENSE AGREEMENTS (Details) - USD ($)
$ in Millions
9 Months Ended 12 Months Ended
Sep. 30, 2018
Dec. 31, 2016
Dec. 31, 2013
Assets Sold under Agreements to Repurchase [Line Items]      
Milestone fee free sales target value   $ 1,500.0  
Royaltee Payment Expiration Requirement 10 years    
Minimum      
Assets Sold under Agreements to Repurchase [Line Items]      
Royaltee payment percentage 5.00%    
Maximum      
Assets Sold under Agreements to Repurchase [Line Items]      
Royaltee 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  
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
License and Service | Alba Agreement      
Assets Sold under Agreements to Repurchase [Line Items]      
License and services revenue   150.0  
License | Alba Agreement      
Assets Sold under Agreements to Repurchase [Line Items]      
License costs   $ 2.5