Consolidated Statements Of Shareholders' Equity (Deficit) (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Series A Preferred Stock [Member]
Preferred stock dividend declared, price per share	$ 2.00	$ 8.00
Series D Preferred Stock [Member]
Preferred stock dividend declared, price per share	0.13	$ 0.92
Series F Preferred Stock [Member]
Preferred stock dividend declared, price per share	$ 0.54