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Subsequent Events (Details) - USD ($)
$ / shares in Units, $ in Millions
Apr. 08, 2016
Apr. 07, 2016
Mar. 31, 2016
Dec. 31, 2015
Common stock shares issued to Holders     5,883,503 5,883,503
Exercise price of warrants     $ 9.34 $ 8.96
Subsequent Event [Member] | Common Stock Issuance Agreement [Member]        
Exercise price of warrants $ 4.05 $ 7.00    
Warrant Expiration Date March 31, 2021 June 26, 2018    
Cash payments in respect of accrued dividends $ 2.2      
Proceeds from sale of common or preferred stock $ 10.0      
Subsequent Event [Member] | Common Stock Issuance Agreement [Member] | Minimum [Member]        
Shares issued, price per share $ 4.05      
Subsequent Event [Member] | Common Stock Issuance Agreement [Member] | Maximum [Member]        
Number of shares issued for which shareholder approval must be sought 1,037,053      
Subsequent Event [Member] | Series B redeemable convertible preferred stock [Member] | Holders Election Conversion [Member]        
Preferred stock shares outstanding 7,527,853      
Subsequent Event [Member] | Common Stock [Member] | Common Stock Issuance Agreement [Member]        
Shares issued 853,465      
Subsequent Event [Member] | Common Stock [Member] | Holders Election Conversion [Member]        
Shares of common stock issued upon conversion of preferred stock 1,505,560