Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Balance Sheets (Parenthetical)

v3.22.1
Condensed Consolidated Balance Sheets (Parenthetical) - USD ($)
Mar. 31, 2022
Dec. 31, 2021
Accounts receivable allowance, net $ 272,000 $ 272,000
Inventory obsolescence reserve $ 438,000 $ 438,000
Preferred stock, par value (in usd per share) $ 0.001 $ 0.001
Preferred stock, shares authorized (in shares) 5,000,000 5,000,000
Preferred stock, shares issued (in shares) 49,250  
Preferred stock, shares outstanding (in shares) 49,250  
Common stock, par value (in usd per share) $ 0.001 $ 0.001
Common stock, shares authorized (in shares) 2,000,000,000 2,000,000,000
Common stock, shares issued (in shares) 152,476,356 124,440,924
Common stock, shares outstanding (in shares) 152,476,355 124,440,923
Treasury stock (in shares) 1 1
Series 7 Convertible Preferred Stock    
Mezzanine equity, convertible preferred stock, shares authorized (in shares) 58,750 58,750
Mezzanine equity, convertible preferred stock, shares issued (in shares) 0 49,250
Mezzanine equity, convertible preferred stock, shares outstanding (in shares) 0 49,250
Series 8 Convertible Preferred Stock    
Mezzanine equity, convertible preferred stock, shares authorized (in shares) 53,197.7234 53,197.7234
Mezzanine equity, convertible preferred stock, shares issued (in shares) 53,197.7234 0
Mezzanine equity, convertible preferred stock, shares outstanding (in shares) 53,197.7234 0
Mezzanine equity, convertible preferred stock, liquidation preference $ 53,197,723 $ 53,197,723
Preferred stock, par value (in usd per share) $ 0.001  
Preferred stock, shares authorized (in shares) 53,197.7234  
Series 4 Convertible Preferred Stock    
Preferred stock, shares authorized (in shares) 10,415 10,415
Preferred stock, shares issued (in shares) 1 1
Preferred stock, shares outstanding (in shares) 1 1
Series 5 Convertible Preferred Stock    
Preferred stock, shares authorized (in shares) 12,000 12,000
Preferred stock, shares issued (in shares) 126 126
Preferred stock, shares outstanding (in shares) 126 126