Annual report pursuant to Section 13 and 15(d)

Subsequent Events - Summary of Shares Issued Series C Convertible Preferred Stock (Details) (Parenthetical)

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Subsequent Events - Summary of Shares Issued Series C Convertible Preferred Stock (Details) (Parenthetical) - Series C Convertible Preferred Stock [Member] - Subsequent Event [Member]
 12 Months Ended
Dec. 31, 2014
Securities Purchase Agreement Date July 24, 2015 [Member]  
Agreement date Jul. 24, 2015
Securities Purchase Agreement Date October 14, 2015 [Member]  
Agreement date Oct. 14, 2015
December 23, 2014 through December 31, 2014 [Member]  
Dividend payable date Dec. 31, 2014
Quarter ended March 31, 2015 [Member]  
Dividend payable date Mar. 31, 2015
Quarter ended June 30, 2015 [Member]  
Dividend payable date Jun. 30, 2015
Quarter ended September 30, 2015 [Member]  
Dividend payable date Sep. 30, 2015