Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($)	Jun. 30, 2021	Dec. 31, 2020
Undesignated stock, par value	$ 0.01	$ 0.01
Undesignated stock, shares authorized	20,000,000	20,000,000
Undesignated stock, shares designated	20,000,000	20,000,000
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	100,000,000	100,000,000
Common stock, issued	59,275,031	57,077,055
Common stock, outstanding	59,275,031	57,077,055
Series C super dividend redeemable convertible preferred stock
Convertible preferred stock, shares authorized	1,000	1,000
Convertible preferred stock, shares issued	176	176
Convertible preferred stock, shares outstanding	176	176
Convertible preferred stock, redemption value	$ 8,494,000
Convertible preferred stock, liquidation value	$ 1,760,000
Series A 12% convertible preferred stock
Convertible preferred stock, shares authorized	1,742,500	1,742,500
Convertible preferred stock, issued	1,302,500	1,302,500
Convertible preferred stock, outstanding	1,302,500	1,302,500
Convertible preferred stock, liquidation value	$ 1,302,500