Annual report pursuant to Section 13 and 15(d)

Note 17 - Preferred Stock (Details Textual)

v3.8.0.1
Note 17 - Preferred Stock (Details Textual) - USD ($)
$ / shares in Units, $ in Thousands
 1 Months Ended
Aug. 31, 2015
Dec. 31, 2017
Dec. 31, 2016
Class of Warrant or Right, Exercise Price of Warrants or Rights   $ 1.19  
Preferred Stock, Shares Outstanding   0 0
Series LL Warrants [Member]      
Class of Warrant or Right, Exercise Price of Warrants or Rights   $ 0.01  
Platinum Management New York LLC [Member] | Series LL Warrants [Member]      
Class of Warrant or Right, Exercise Price of Warrants or Rights $ 0.01    
Class of Warrant or Right, Number of Securities Called by Warrants or Rights 14,777,130    
Preferred Stock, Liquidation Preference, Value $ 0    
Gain (Loss) from Exchange of Warrants $ 0    
Series B Preferred Stock [Member]      
Preferred Stock, Shares Outstanding 0    
Series B Preferred Stock [Member] | Platinum Management New York LLC [Member]      
Preferred Stock Exchanged for Warrants During Period, Shares 4,519    
Class of Warrant or Right, Outstanding Term 20 years    
Warrant Issued Upon Exchange of Preferred Stock 14,777,130    
Shares Conversion, Number of Common Stock Equivalent to Each Preferred Stock 3,270