CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Common stock, par value	$ 0.01	$ 0.01
Common stock, authorized	7,500,000	7,500,000
Common stock, issued	1,761,802	1,327,284
Common stock, outstanding	1,761,802	1,327,284
Series A Convertible Preferred Stock [Member]
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, authorized	348	348
Preferred stock, issued	348	348
Preferred stock, outstanding	0	0
Series B Convertible Preferred Stock [Member]
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, authorized	80,458	80,458
Preferred stock, issued	80,458	80,458
Preferred stock, outstanding	0	0
Series C Junior Preferred Stock [Member]
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, authorized	15,000	15,000
Preferred stock, issued	0	0
Preferred stock, outstanding	0	0
Series D Convertible Preferred Stock [Member]
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, authorized	25,000	25,000
Preferred stock, issued	23,760	23,760
Preferred stock, outstanding	21,027	21,027
Preferred Stock, Liquidation Preference, Value	$ 20,186	$ 20,186
Series E Convertible Preferred Stock [Member]
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, authorized	73,665	73,665
Preferred stock, issued	48,387	48,387
Preferred stock, outstanding	48,387	48,387
Preferred Stock, Liquidation Preference, Value	$ 3,023	$ 3,023