Consolidated Balance Sheets (Parenthetical) - USD ($)	Dec. 31, 2016	Dec. 31, 2015
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	100,000,000	100,000,000
Common stock, issued	41,465,820	32,804,617
Common stock, outstanding	41,465,820	32,804,617
Preferred Stock
Preferred stock, shares authorized	5,000,000	5,000,000
Series A Convertible Preferred Stock
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, liquidation preference value	$ 100	$ 100
Preferred stock, shares authorized	150,000	150,000
Preferred stock, issued	0	0
Preferred stock, outstanding	0	0