Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals)

v3.22.2.2
Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($)
Jun. 30, 2022
Dec. 31, 2021
Common stock, par value (in dollars per share) $ 0.001 $ 0.001
Common stock, shares authorized (in shares) 300,000,000 300,000,000
Common stock, shares issued (in shares) 30,364,792 30,279,922
Common stock, shares outstanding (in shares) 30,364,792 30,279,922
Non-Series Preferred Stock [Member]    
Preferred stock, par value (in dollars per share) $ 0.001 $ 0.001
Preferred stock, shares authorized (in shares) 5,000,000 5,000,000
Preferred stock, shares issued (in shares) 0 0
Preferred stock, shares outstanding (in shares) 0 0
Series D Preferred Stock [Member]    
Preferred stock, par value (in dollars per share) $ 0.001 $ 0.001
Preferred stock, shares authorized (in shares) 150,000 150,000
Preferred stock, shares issued (in shares) 22,077 22,077
Preferred stock, shares outstanding (in shares) 22,077 22,077
Series E Preferred Stock [Member]    
Preferred stock, par value (in dollars per share) $ 0.001 $ 0.001
Preferred stock, shares authorized (in shares) 50,000 50,000
Preferred stock, shares issued (in shares) 0 50,000
Preferred stock, shares outstanding (in shares) 0 50,000
Series F Preferred Stock [Member]    
Preferred stock, par value (in dollars per share) $ 0.001 $ 0.001
Preferred stock, shares authorized (in shares) 1,740 1,740
Preferred stock, shares issued (in shares) 1,740 0
Preferred stock, shares outstanding (in shares) 1,740 0
Series G Preferred Stock [Member]    
Preferred stock, par value (in dollars per share) $ 0.001 $ 0.001
Preferred stock, shares authorized (in shares) 3,260 3,260
Preferred stock, shares issued (in shares) 3,260 0
Preferred stock, shares outstanding (in shares) 3,260 0
Series H Preferred Stock [Member]    
Preferred stock, par value (in dollars per share) $ 0.001 $ 0.001
Preferred stock, shares authorized (in shares) 75,000 75,000
Preferred stock, shares issued (in shares) 0 0
Preferred stock, shares outstanding (in shares) 0 0
Note Payable to Related Party [Member]    
Note payable to related party, discount $ 779,695