Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - $ / shares	Sep. 30, 2017	Dec. 31, 2016
Common stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Common stock, authorized	100,000,000	100,000,000
Common stock, issued	6,229,910	4,943,941
Common stock, outstanding	6,229,898	4,943,929
Treasury stock	12	12
Series D Convertible Preferred Stock [Member]
Preferred stock, issued	4,725	4,725
Preferred stock, outstanding	4,725	4,725
liquidation preference (in dollars per share)	$ 0.0001	$ 0.0001
Series D-1 Convertible Preferred Stock [Member]
Preferred stock, issued	834	834
Preferred stock, outstanding	834	834
liquidation preference (in dollars per share)	$ 0.0001	$ 0.0001
Series H Convertible Preferred Stock [Member]
Preferred stock, issued	0	381,967
Preferred stock, outstanding	0	381,967
liquidation preference (in dollars per share)	$ 83.50	$ 83.50
Series K Convertible Preferred Stock [Member]
Preferred stock, issued	0	1,240
Preferred stock, outstanding	0	1,240
liquidation preference (in dollars per share)	$ 1,000	$ 1,000