Annual report pursuant to Section 13 and 15(d)

REVENUES - Percentage by Customer (Details)

v3.19.3.a.u2
REVENUES - Percentage by Customer (Details) - Sales - Customer concentration risk
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
ASD Healthcare and Oncology Supply      
Disaggregation of Revenue [Line Items]      
Percentage 37.00% 17.00%  
McKesson Specialty Care Distribution Corporation      
Disaggregation of Revenue [Line Items]      
Percentage 30.00% 11.00%  
Kissei      
Disaggregation of Revenue [Line Items]      
Percentage 3.00% 69.00%  
BerGenBio      
Disaggregation of Revenue [Line Items]      
Percentage     74.00%