Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Mar. 31, 2020	Dec. 31, 2019
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, shares authorized	120,000,000	120,000,000
Common stock, shares issued	6,074,122	3,760,255
Common stock, shares outstanding	6,074,122	3,760,255
Series A
Convertible preferred stock, par value	$ 10	$ 10
Convertible preferred stock, shares issued	85,581	85,581
Convertible preferred stock, shares outstanding	85,581	85,581
Series C
Convertible preferred stock, par value	$ 1,000	$ 1,000
Convertible preferred stock, shares issued	1,827	1,827
Convertible preferred stock, shares outstanding	1,827	1,827