Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($)	Jun. 30, 2016	Dec. 31, 2015
Common stock, par value		$ 0.01
Common stock, shares authorized	150,000,000	150,000,000
Common stock, shares issued	30,787,770	28,391,072
Common stock, shares outstanding	30,787,770	28,391,072
Series D Convertible Preferred Stock [Member]
Convertible preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	1,000,000	1,000,000
Convertible preferred stock, shares issued	173,288	191,490
Convertible preferred stock, shares outstanding	173,288	191,490
Convertible preferred stock, liquidation preference	$ 1,733	$ 1,915
Series E Convertible Preferred Stock [Member]
Convertible preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	1,000,000	1,000,000
Convertible preferred stock, shares issued	33,333	33,333
Convertible preferred stock, shares outstanding	33,333	33,333
Convertible preferred stock, liquidation preference	$ 333	$ 333