XML 22 R40.htm IDEA: XBRL DOCUMENT v3.19.3
Summary of significant accounting policies (Details)
 9 Months Ended
Sep. 30, 2019
instrument
issuer
item
Concentrations of Credit Risk  
Number of issuer to which company limits the amount of credit exposure other than US Government guaranteed securities | issuer 1
Number of financial investment to which company limits the amount of credit exposure other than US Government guaranteed securities | instrument 1
Variable Interest Entities  
Number of entities in which variable interest held | item 0
JAKAFI  
Inventory  
Shelf life for finished goods inventory, maximum 36 months