CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Dec. 31, 2021	Dec. 31, 2020
Common stock, par value	$ 0.01	$ 0.01
Common stock, authorized	150,000,000	150,000,000
Common stock, issued	101,269,349	94,058,853
Common stock, outstanding	101,269,349	94,058,853
Series A Convertible Preferred Stock
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, authorized	6,968	6,968
Preferred stock, issued	0	0
Preferred stock, outstanding	0	0
Series C Junior Preferred Stock
Preferred stock, par value	$ 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
Preferred stock, par value	$ 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.
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, authorized	2,397,060	2,397,060
Preferred stock, issued	0	0
Preferred stock, outstanding	0	0
Series F Convertible Preferred Stock.
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, authorized	9,000	9,000
Preferred stock, issued	0	0
Preferred stock, outstanding	0	0

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