Consolidated Balance Sheets (Parenthetical) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Net of allowance for doubtful accounts	$ 774,826	$ 505,401
Preferred stock, par value per share	$ 0.01	$ 0.01
Preferred stock, shares authorized	20,000,000	20,000,000
Common stock, par value per share	$ 0.01	$ 0.01
Common stock, shares authorized	324,000,000	324,000,000
Common shares, shares issued	118,162,150	100,782,956
Common shares, shares outstanding	117,336,975	100,782,956
Treasury stock, shares issued	825,175
Series A-1 Preferred Stock [Member]
Preferred stock, shares authorized	2,000,000	2,000,000
Preferred stock, shares issued	1,200,000	1,200,000
Preferred stock, shares outstanding	1,200,000	1,200,000
Series B-1 Preferred Stock [Member]
Preferred stock, shares authorized	6,000,000	6,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Series E Preferred Stock [Member]
Preferred stock, shares authorized	2,500,000	2,500,000
Preferred stock, shares issued	2,500,000	2,500,000
Preferred stock, shares outstanding	2,500,000	2,500,000
Series F Preferred Stock [Member]
Preferred stock, shares authorized	4,344,017	4,344,017
Preferred stock, shares issued	4,344,017	4,344,017
Preferred stock, shares outstanding	4,344,017	4,344,017