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v3.19.3.a.u2

STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) | Common Stock | Additional Paid-in Capital | Retained Earnings | Accumulated Other Comprehensive (Loss) Income | Total
--- | --- | --- | --- | --- | ---
Balances at Dec. 31, 2016 | $ 1,072 | $ 12,055,188 | $ 19,869,714 | $ (36,849) | $ 31,889,125
Balance (in shares) at Dec. 31, 2016 | 10,722,675 |  |  |  |
Increase (Decrease) in Stockholders' Equity |  |  |  |  |
Net income |  |  | 499,764 |  | 499,764
Other comprehensive loss |  |  |  | (12,060) | (12,060)
Stock-based compensation |  | 2,454,363 |  |  | 2,454,363
Net share settlement of restricted stock units | $ 5 | (158,145) |  |  | (158,140)
Net share settlement of restricted stock units (in shares) | 50,759 |  |  |  |
Exercise of stock options and warrants | $ 3 | 76,363 |  |  | 76,366
Exercise of stock options and warrants (in shares) | 33,054 |  |  |  |
Purchases and retirement of treasury stock | $ (20) | (1,818,521) |  |  | (1,818,541)
Purchases and retirement of treasury stock (in shares) | (209,922) |  |  |  |
Cumulative effect from adoption of accounting standard update |  | 13,933 | (13,933) |  |
Balances at Dec. 31, 2017 | $ 1,060 | 12,623,181 | 20,355,545 | (48,909) | 32,930,877
Balance (in shares) at Dec. 31, 2017 | 10,596,566 |  |  |  |
Increase (Decrease) in Stockholders' Equity |  |  |  |  |
Net income |  |  | 6,303,450 |  | 6,303,450
Other comprehensive loss |  |  |  | 17,213 | 17,213
Stock-based compensation |  | 1,764,319 |  |  | 1,764,319
Net share settlement of restricted stock units | $ 8 | (309,569) |  |  | (309,561)
Net share settlement of restricted stock units (in shares) | 77,352 |  |  |  |
Exercise of stock options and warrants | $ 31 | 1,239,404 |  |  | 1,239,435
Exercise of stock options and warrants (in shares) | 315,193 |  |  |  |
Cumulative effect from adoption of accounting standard update |  |  | 10,496 | (10,496) |
Balances at Dec. 31, 2018 | $ 1,099 | 15,317,335 | 26,669,491 | (42,192) | 41,945,733
Balance (in shares) at Dec. 31, 2018 | 10,989,111 |  |  |  |
Increase (Decrease) in Stockholders' Equity |  |  |  |  |
Net income |  |  | 9,630,959 |  | 9,630,959
Other comprehensive loss |  |  |  | 72,566 | 72,566
Stock-based compensation |  | 1,854,965 |  |  | 1,854,965
Net share settlement of restricted stock units | $ 7 | (473,150) |  |  | (473,143)
Net share settlement of restricted stock units (in shares) | 74,880 |  |  |  |
Exercise of stock options and warrants | $ 71 | 2,493,244 |  |  | 2,493,315
Exercise of stock options and warrants (in shares) | 701,884 |  |  |  |
Balances at Dec. 31, 2019 | $ 1,177 | $ 19,192,394 | $ 36,300,450 | $ 30,374 | $ 55,524,395
Balance (in shares) at Dec. 31, 2019 | 11,765,875 |  |  |  |

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