Annual report pursuant to Section 13 and 15(d)

Outstanding warrants (Details)

v3.3.1.900
Outstanding warrants (Details)
 1 Months Ended
Oct. 16, 2013
$ / shares
shares
Oct. 16, 2013
$ / shares
shares
Feb. 27, 2016
$ / shares
shares
Dec. 31, 2015
$ / shares
Dec. 31, 2014
$ / shares
Oct. 15, 2013
$ / shares
shares
Class of Warrant or Right [Line Items]            
Outstanding warrants to purchase membership units | shares           62,280
Trigger price (in dollars per share)       $ 6.25 $ 6.25  
Subsequent Event [Member]            
Class of Warrant or Right [Line Items]            
Exercise price of warrants (in dollars per warrant)     $ 5.00      
Number of warrants expired | shares     5,750,000      
The One Group [Member]            
Class of Warrant or Right [Line Items]            
Exercise price of warrants (in dollars per warrant) $ 5.00 $ 5.00        
Merger exchange ratio   8.09        
Number of shares exchanged for warrants exercised | shares 5,750,000 5,750,000        
Trigger price (in dollars per share) $ 6.25 $ 6.25        
Warrants, convertible, threshold trading days 20 days          
Warrants, convertible, threshold consecutive trading days 30 days          
The One Group [Member] | Subsequent Event [Member]            
Class of Warrant or Right [Line Items]            
Number of warrants expired | shares     5,750,000      
Minimum [Member]            
Class of Warrant or Right [Line Items]            
Exercise price of warrants (in dollars per warrant)           $ 22.94
Maximum [Member]            
Class of Warrant or Right [Line Items]            
Exercise price of warrants (in dollars per warrant)           $ 32.00