XML 67 R52.htm IDEA: XBRL DOCUMENT v3.3.1.900
Capital structure (Details 3) - Common stock - $ / shares
Dec. 31, 2015
Dec. 31, 2014
2017    
Class of Warrant or Right [Table]    
Warrant shares 6,250 6,250
Exercise price (in dollars per share) $ 128.00 $ 128.00
2019.    
Class of Warrant or Right [Table]    
Warrant shares 7,030 7,030
Exercise price (in dollars per share) $ 128.00 $ 128.00
2019    
Class of Warrant or Right [Table]    
Warrant shares 130 130
Exercise price (in dollars per share) $ 2,520.00 $ 2,520.00