XML 60 R49.htm IDEA: XBRL DOCUMENT v3.8.0.1
RELATED PARTIES - Narrative (Details) - USD ($)
$ / shares in Units, $ in Millions
1 Months Ended 3 Months Ended
Feb. 28, 2018
Jun. 30, 2017
May 31, 2017
Jul. 31, 2016
May 31, 2013
Mar. 31, 2018
Dec. 31, 2017
Related Party Transaction [Line Items]              
Conversion of stock, shares converted (in shares)     801,329        
Warrant, term   10 years   10 years 10 years    
Class of warrant (in shares)         644,365 0 110,000
Exercise price of warrants (in usd per share)   $ 27.68   $ 20.00 $ 23.64    
Series G Stock              
Related Party Transaction [Line Items]              
Proceeds from issuance of Series G preferred stock     $ 11.9        
Issuance of Series G and Series G’ Stock (in shares)     346,334        
Exercise price of warrants (in usd per share)     $ 0.0004        
Series G’ Stock              
Related Party Transaction [Line Items]              
Conversion of stock, shares converted (in shares)     1,295,746        
Series E              
Related Party Transaction [Line Items]              
Issuance of Series G and Series G’ Stock (in shares)         397,515    
Common Stock Warrants              
Related Party Transaction [Line Items]              
Stock option expense $ 2.5            
Stockholders' Equity | Shareholder Concentration Risk              
Related Party Transaction [Line Items]              
Concentration risk           5.00%