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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 |  |  |  |  |  |  |  |

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