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CONDENSED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($)
Preferred Stock
Series I, Class B
Preferred Stock
Series II, Class B
Preferred Stock
Series III Class B
Preferred Stock
Series IV Preferred Stock
Preferred Stock
Series V Preferred Stock
Additional Paid-in Capital
Retained Earnings/Accumulated Deficit
Treasury Stock
Total
Balance at Dec. 31, 2019 $ 96,000 $ 171,200 $ 129,245 $ 342,500 $ 34,000 $ 61,660,744 $ (33,891,234)   $ 28,542,455
Increase (Decrease) in Stockholders' Equity                  
Exchange of Preferred Stock for Common Stock     (2,500) (307,500)   (2,513,248)     (2,823,248)
Conversion of Preferred Stock into Common Stock   (15,000)       15,000      
Stock Option Exercises           851,012     851,012
Dividends           (161,842)     (161,842)
Net income             12,714,637   12,714,637
Balance at Sep. 30, 2020 96,000 156,200 126,745 35,000 34,000 59,851,666 (21,176,597)   39,123,014
Balance at Jun. 30, 2020 96,000 171,200 126,745 335,000 34,000 62,087,831 (29,802,348)   33,048,428
Increase (Decrease) in Stockholders' Equity                  
Exchange of Preferred Stock for Common Stock       (300,000)   (2,423,248)     (2,723,248)
Conversion of Preferred Stock into Common Stock   (15,000)       15,000      
Stock Option Exercises           224,325     224,325
Dividends           (52,242)     (52,242)
Net income             8,625,751   8,625,751
Balance at Sep. 30, 2020 $ 96,000 156,200 126,745 $ 35,000 $ 34,000 59,851,666 (21,176,597)   39,123,014
Balance at Dec. 31, 2020   156,200 106,745     59,285,401 (9,668,221)   49,880,125
Increase (Decrease) in Stockholders' Equity                  
Conversion of Preferred Stock into Common Stock     (26,500)     26,500      
Stock Option Exercises           48,600     48,600
Dividends             (5,135,046)   (5,135,046)
Stock option compensation           2,503,152     2,503,152
Repurchase of Common Stock               $ (2,839,326) (2,839,326)
Net income             35,139,894   35,139,894
Balance at Sep. 30, 2021   156,200 80,245     61,863,653 20,336,627 (2,839,326) 79,597,399
Balance at Jun. 30, 2021   156,200 80,245     60,706,417 13,853,792 (154,424) 74,642,230
Increase (Decrease) in Stockholders' Equity                  
Dividends             (39,050)   (39,050)
Stock option compensation           1,157,236     1,157,236
Repurchase of Common Stock               (2,684,902) (2,684,902)
Net income             6,521,885   6,521,885
Balance at Sep. 30, 2021   $ 156,200 $ 80,245     $ 61,863,653 $ 20,336,627 $ (2,839,326) $ 79,597,399