Quarterly report pursuant to Section 13 or 15(d)

Public Offering of Common Stock (Details)

v3.3.0.814
Public Offering of Common Stock (Details) - USD ($)
Aug. 26, 2015
Feb. 13, 2015
Feb. 05, 2015
Sep. 30, 2015
Dec. 31, 2014
Shares of common stock sold       29,844,503 19,488,814
Par value of common stock       $ 0.01 $ 0.01
Offering          
Shares of common stock sold     4,728,000    
Public offering price (in dollars per share)     $ 2.75    
Underwriting Agreement          
Shares of common stock sold     709,200    
Number of days to underwriter to sell additional common shares     30 days    
Offering inclusive of over-allotment option          
Shares of common stock sold   5,437,200      
Gross proceeds from issuance of common stock   $ 15,000,000      
Underwriting discounts, commissions and other estimated offering expenses   $ 1,400,000      
Securities Purchase Agreement          
Offering expenses $ 300,000        
Offering expenses paid $ 181,000        
ESSEX | Securities Purchase Agreement          
Shares of common stock sold 4,861,111        
Public offering price (in dollars per share) $ 3.60        
Gross proceeds from issuance of common stock $ 17,200,000