Consolidated statements of changes in equity
(thousands of €)  | 
      Share capital  | 
      Share premium account  | 
      Translation differences  | 
      Other reserves  | 
      Accumul. losses  | 
      Total  | 
    
On 1 January 2015  | 
      157,274  | 
      114,182  | 
      (1,157)  | 
      (220)  | 
      (63,944)  | 
      206,135  | 
    
Net loss  | 
      
  | 
      
  | 
      
  | 
      
  | 
      (118,410)  | 
      (118,410)  | 
    
Other comprehensive income  | 
      
  | 
      
  | 
      690  | 
      202  | 
      
  | 
      892  | 
    
Total comprehensive income  | 
      
  | 
      
  | 
      690  | 
      202  | 
      (118,410)  | 
      (117,517)  | 
    
Share-based compensation  | 
      
  | 
      
  | 
      
  | 
      
  | 
      5,036  | 
      5,036  | 
    
Issue of new shares  | 
      40,751  | 
      237,952  | 
      
  | 
      
  | 
      
  | 
      278,703  | 
    
Share issue costs  | 
      (19,360)  | 
      
  | 
      
  | 
      
  | 
      
  | 
      (19,360)  | 
    
Exercise of warrants  | 
      6,734  | 
      5,269  | 
      
  | 
      
  | 
      
  | 
      12,002  | 
    
On 31 December 2015  | 
      185,399  | 
      357,402  | 
      (467)  | 
      (18)  | 
      (177,317)  | 
      364,999  | 
    
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
      
  | 
    
On 1 January 2016  | 
      185,399  | 
      357,402  | 
      (467)  | 
      (18)  | 
      (177,317)  | 
      364,999  | 
    
Net income  | 
      
  | 
      
  | 
      
  | 
      
  | 
      54,012  | 
      54,012  | 
    
Other comprehensive income  | 
      
  | 
      
  | 
      (623)  | 
      (982)  | 
      
  | 
      (1,605)  | 
    
Total comprehensive income  | 
      
  | 
      
  | 
      (623)  | 
      (982)  | 
      54,012  | 
      52,406  | 
    
Share-based compensation  | 
      
  | 
      
  | 
      
  | 
      
  | 
      11,034  | 
      11,034  | 
    
Issue of new shares  | 
      36,575  | 
      289,696  | 
      
  | 
      
  | 
      
  | 
      326,271  | 
    
Share issue costs  | 
      (269)  | 
      
  | 
      
  | 
      
  | 
      
  | 
      (269)  | 
    
Exercise of warrants  | 
      2,223  | 
      2,037  | 
      
  | 
      
  | 
      
  | 
      4,261  | 
    
On 31 December 2016  | 
      223,928  | 
      649,135  | 
      (1,090)  | 
      (1,000)  | 
      (112,272)  | 
      758,701  | 
    
