CONSOLIDATED CONDENSED BALANCE SHEETS (Parenthetical) $ in Thousands	Mar. 31, 2020 USD ($) $ / shares shares	Dec. 31, 2019 USD ($) $ / shares shares
Common stock, par value | $ / shares	$ 0.01	$ 0.01
Common stock, authorized	150,000,000	150,000,000
Common stock, issued	18,601,467	18,601,467
Common stock, outstanding	5,157,390	5,157,390
Series A Convertible Preferred Stock [Member]
Preferred stock, par value | $ / shares	$ 0.01	$ 0.01
Preferred stock, authorized	6,968	6,968
Preferred stock, issued	6,673	6,673
Preferred stock, outstanding	0	0
Series C Junior Preferred Stock [Member]
Preferred stock, par value | $ / shares	$ 0.01	$ 0.01
Preferred stock, authorized	300,000	300,000
Preferred stock, issued	0	0
Preferred stock, outstanding	0	0
Series D Convertible Preferred Stock [Member]
Preferred stock, par value | $ / shares	$ 0.01	$ 0.01
Preferred stock, authorized	500,000	500,000
Preferred stock, issued	0	0
Preferred stock, outstanding	0	0
Series E Convertible Preferred Stock [Member]
Preferred stock, par value | $ / shares	$ 0.01	$ 0.01
Preferred stock, authorized	2,397,060	2,397,060
Preferred stock, issued	987,988	977,865
Preferred stock, outstanding	987,988	977,865
Preferred stock, liquidation preference value | $	$ 3,063	$ 3,031
Series F Convertible Preferred Stock [Member]
Preferred stock, par value | $ / shares	$ 0.01	$ 0.01
Preferred stock, authorized	9,000	9,000
Preferred stock, issued	1,531	8,996
Preferred stock, outstanding	1,531	8,996
Preferred stock, liquidation preference value | $	$ 153	$ 900