Consolidated Balance Sheets (Parenthetical) - $ / shares	Dec. 31, 2019	Dec. 31, 2018
Preferred stock, issued
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, authorized	100,000,000	100,000,000
Common stock, issued	4,825,552	2,010,028
Common stock, outstanding	4,825,549	2,010,025
Treasury stock	3	3
Series D Preferred Stock
Preferred stock, par value	$ 0.0001	$ 0.0001
Preferred stock, issued	4,725	4,725
Preferred stock, outstanding	4,725	4,725
liquidation preference	$ 0.0001	$ 0.0001
Series D-1 Preferred Stock
Preferred stock, par value	$ 0.0001	$ 0.0001
Preferred stock, issued	834	834
Preferred stock, outstanding	834	834
liquidation preference	$ 0.0001	$ 0.0001

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