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Convertible Preferred Stock and Warrants (Details Textual) - USD ($)
$ / shares in Units, $ in Thousands
 1 Months Ended 6 Months Ended
Feb. 28, 2015
Aug. 18, 2014
May. 20, 2015
Jun. 30, 2015
Dec. 31, 2014
Convertible Preferred Stock and Warrants (Textual)          
Issuance of warrants to purchase common shares   6,487,000   331,250  
Share price       $ 0.38  
Preferred stock, dividend rate     6.00%    
Conversion price $ 0.29        
Conversion price at date of issuance $ 0.34        
Convertible preferred stock beneficial conversion feature $ 30        
Exercise price reduction per share       $ 0.025  
Fair value of warrant issued       $ 75  
Series A Convertible Preferred Stock [Member]          
Convertible Preferred Stock and Warrants (Textual)          
Issuance of series A convertible preferred stock 265,000        
Issuance of warrants to purchase common shares 331,250        
Preferred stock per share $ 1.00        
Share price $ 0.50        
Gross proceeds from issuance of preferred stock $ 265        
Preferred stock, dividend rate 6.00%        
Conversion price $ 0.33        
Convertible preferred stock beneficial conversion feature $ 300        
Temporary equity       $ 1,700 $ 1,500
Term of warrant 5 years