Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Balance Sheets (Parenthetical)

v3.21.1
Condensed Consolidated Balance Sheets (Parenthetical) - USD ($)
Mar. 31, 2021
Dec. 31, 2020
Accounts receivable, allowance doubtful accounts $ 188,377 $ 180,941
Series B convertible redeemable preferred stock, par value $ 0.01 $ 0.01
Series B convertible redeemable preferred stock, shares authorized 902,670 902,670
Series B convertible redeemable preferred stock, shares issued 0 901,070
Series B convertible redeemable preferred stock, shares outstanding 0 901,070
Preferred stock, shares authorized 11,000,000 11,000,000
Common stock, par value $ 0.01 $ 0.01
Common stock, shares authorized 150,000,000 150,000,000
Common stock, shares issued 7,478,632 5,234,406
Common stock, shares outstanding 7,475,263 5,231,037
Treasury stock, shares 3,369 3,369
Series A Convertible Preferred Stock [Member]    
Preferred stock, shares authorized 10,097,330 10,097,330
Preferred stock, par value $ 0.01 $ 0.01
Preferred stock, shares issued
Related Party [Member]    
Accounts receivable, allowance doubtful accounts $ 339,503 $ 332,130