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STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($)
Common Stock
Preferred Stock
Series I, Class B
Preferred Stock
Series II, Class B
Preferred Stock
Series III Preferred Stock
Preferred Stock
Series IV Preferred Stock
Preferred Stock
Series V Preferred Stock
Additional Paid-in Capital
Accumulated Deficit
Series I, Class B
Series III Preferred Stock
Series V Preferred Stock
Total
Balance at Dec. 31, 2017   $ 98,500 $ 171,200 $ 129,245 $ 342,500 $ 40,000 $ 62,092,206 $ (35,699,525)       $ 27,174,126
Balance (in shares) at Dec. 31, 2017 32,666,454 98,500 171,200 129,245 342,500 40,000            
Increase (Decrease) in Stockholders' Equity                        
Dividends             (220,450)         (220,450)
Net income (loss)               (1,339,943)       (1,339,943)
Balance at Dec. 31, 2018   $ 98,500 $ 171,200 $ 129,245 $ 342,500 $ 40,000 61,871,756 (37,039,468)       25,613,733
Balance (in shares) at Dec. 31, 2018 32,666,454 98,500 171,200 129,245 342,500 40,000            
Increase (Decrease) in Stockholders' Equity                        
Conversion of Preferred Stock into Common Stock (in Shares) 8,500 (2,500)       (6,000)     2,500   6,000  
Dividends             (219,512)         (219,512)
Conversion of Preferred Stock into Common Stock   $ (2,500)       $ (6,000) 8,500          
Net income (loss)               3,148,234       3,148,234
Balance at Dec. 31, 2019   $ 96,000 $ 171,200 $ 129,245 $ 342,500 $ 34,000 61,660,744 (33,891,234)       28,542,455
Balance (in shares) at Dec. 31, 2019 32,674,954 96,000 171,200 129,245 342,500 34,000            
Increase (Decrease) in Stockholders' Equity                        
Exchange of Preferred Stock for Common Stock       $ (22,500) $ (342,500) $ (34,000) (3,090,672)         (3,489,672)
Exchange of Preferred Stock for Common Stock (in shares) 754,000       (342,500) (34,000)            
Stock Option Exercises $ 431,550           922,512         922,512
Redemption   $ (14,300)         (92,950)   $ (107,250)     (107,250)
Redemption (in shares)   (14,300)             14,300      
Conversion of Preferred Stock into Common Stock (in Shares) 96,700 (81,700) (15,000)           81,700 22,500 0  
Dividends             (210,933)         (210,933)
Conversion of Preferred Stock into Common Stock   $ (81,700) $ (15,000)       96,700          
Net income (loss)               24,223,013       24,223,013
Balance at Dec. 31, 2020     $ 156,200 $ 106,745     $ 59,285,401 $ (9,668,221)       $ 49,880,125
Balance (in shares) at Dec. 31, 2020 33,957,204   156,200 106,745