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v3.10.0.1

Consolidated Statements of Shareholders' Equity - USD ($) | Total | Common Stock [Member] Class A Common Stock [Member] | Common Stock [Member] Class B Common Stock [Member] | Additional Paid In Capital [Member] | Treasury Stock [Member] | Retained Earnings [Member] | Accumulated Other Comprehensive Income (Loss) [Member]
--- | --- | --- | --- | --- | --- | --- | ---
Beginning Balance at Dec. 31, 2016 | $ 202,491,623 | $ 15,113 | $ 16,662 | $ 146,339,925 | $ (15,560,021) | $ 72,401,766 | $ (721,822)
Beginning Balance, shares at Dec. 31, 2016 |  | 15,112,529 | 16,662,743 |  | (2,937,987) |  |
Stock-based compensation | 1,745,134 | $ 110 |  | 1,745,024 |  |  |
Stock-based compensation, shares |  | 110,209 |  |  |  |  |
Adjustment from related party acquisition | (97,617) |  |  | (97,617) |  |  |
Purchase of treasury stock | (1,107,064) |  |  |  | $ (1,107,064) |  |
Purchase of treasury stock, shares |  |  |  |  | (94,753) |  |
Net income | 87,131,169 |  |  |  |  | 87,131,169 |
Cash dividends, per common share | (5,143,441) |  |  |  |  | (5,143,441) |
Other comprehensive income (loss) | 1,146,396 |  |  |  |  |  | 1,146,396
Ending Balance at Dec. 31, 2017 | 286,166,200 | $ 15,223 | $ 16,662 | 147,987,332 | $ (16,667,085) | 154,389,494 | 424,574
Ending Balance, shares at Dec. 31, 2017 |  | 15,222,738 | 16,662,743 |  | (3,032,740) |  |
Change in accounting principle |  |  |  |  |  | 3,654 | (3,654)
Issuance of common stock | 29,888 | $ 4 |  | 29,884 |  |  |
Issuance of common stock, shares |  | 4,461 |  |  |  |  |
Stock-based compensation | 1,945,669 | $ 107 |  | 1,945,562 |  |  |
Stock-based compensation, shares |  | 107,137 |  |  |  |  |
Adjustment from related party acquisition | 474 |  |  | 474 |  |  |
Purchase of treasury stock | $ (13,780,512) |  |  |  | $ (13,780,512) |  |
Purchase of treasury stock, shares | (55,128) |  |  |  | (1,393,287) |  |
Net income | $ 6,481,049 |  |  |  |  | 6,481,049 |
Cash dividends, per common share | (5,475,642) |  |  |  |  | (5,475,642) |
Other comprehensive income (loss) | (333,035) |  |  |  |  |  | (333,035)
Ending Balance at Dec. 31, 2018 | $ 275,034,091 | $ 15,334 | $ 16,662 | $ 149,963,252 | $ (30,447,597) | $ 155,398,555 | $ 87,885
Ending Balance, shares at Dec. 31, 2018 |  | 15,334,336 | 16,662,743 |  | (4,426,027) |  |

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