Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018
Common stock, par value (in dollars per share)	$ 0.0001		$ 0.0001
Common stock, authorized	100,000,000		100,000,000
Common stock, issued	2,321,091		2,010,028
Common stock, outstanding	2,321,088		2,010,025
Treasury stock		3	3
Series D 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 Preferred Stock [Member]
Preferred stock, issued	834		834
Preferred stock, outstanding	834		834
liquidation preference (in dollars per share)	$ 0.0001		$ 0.0001