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Statements of Stockholders' Equity - USD ($) | Class A Common Stock | Class C Common Stock | Additional Paid-in Capital | Accumulated Other Comprehensive Income (Loss) | Retained Earnings | Treasury Stock | Total
--- | --- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2015 | $ 26,218,200 | $ 3,419,280 | $ 30,232,582 | $ (499,358) | $ 54,054,950 | $ (2,179,429) | $ 111,246,225
Other comprehensive income |  |  |  | 299,566 |  |  | 299,566
Grant of stock options |  |  | 84,452 |  |  |  | 84,452
Exercise of stock options | 56,920 |  | 4,367 |  |  |  | 61,287
Sale of treasury stock |  |  | 136,826 |  |  | 149,639 | 286,465
Net earnings |  |  |  |  | 2,611,537 |  | 2,611,537
Stock Dividends | 274 | 12,768 | 30,779 |  | (43,821) |  |
Balance at Mar. 31, 2016 | 26,275,394 | 3,432,048 | 30,489,006 | (199,792) | 56,622,666 | (2,029,790) | 114,589,532
Balance at Dec. 31, 2016 | 27,638,012 | 3,804,458 | 34,813,246 | 264,822 | 63,029,627 | (1,370,611) | 128,179,554
Other comprehensive income |  |  |  | 21,292 |  |  | 21,292
Grant of stock options |  |  | 101,996 |  |  |  | 101,996
Sale of treasury stock |  |  | 178,002 |  |  | 146,065 | 324,067
Purchase of treasury stock |  |  |  |  |  | (185,470) | (185,470)
Net earnings |  |  |  |  | 1,468,464 |  | 1,468,464
Stock Dividends | 930 | 4 | 2,350 |  | (3,284) |  |
Conversion Class C to Class A | 1,214 | (1,214) |  |  |  |  |
Balance at Mar. 31, 2017 | $ 27,640,156 | $ 3,803,248 | $ 35,095,594 | $ 286,114 | $ 64,494,807 | $ (1,410,016) | $ 129,909,903

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