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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, 2014 | $ 24,918,480 | $ 2,788,138 | $ 25,931,119 | $ 1,438,566 | $ 44,101,252 | $ (2,086,454) | $ 97,091,101
Net earnings |  |  |  |  | 10,605,767 |  | 10,605,767
Other comprehensive income |  |  |  | 413,315 |  |  | 413,315
Grant of stock options |  |  | 299,986 |  |  |  | 299,986
Exercise of stock options | 41,862 | 228,046 | (1,208) |  |  | (244,009) | 24,691
Sale of treasury stock |  |  | 489,746 |  |  | 380,956 | 870,702
Stock Dividends | 480 | 2 | 728 |  | (1,210) |  |
Conversion Class C to Class A | 1,256 | (1,256) |  |  |  |  |
Balance at Sep. 30, 2015 | 24,962,078 | 3,014,930 | 26,720,371 | 1,851,881 | 54,705,809 | (1,949,507) | 109,305,562
Balance at Dec. 31, 2015 | 26,218,200 | 3,419,280 | 30,232,582 | 1,533,828 | 52,021,764 | (2,179,429) | 111,246,225
Net earnings |  |  |  |  | 12,442,516 |  | 12,442,516
Other comprehensive income |  |  |  | 491,220 |  |  | 491,220
Grant of stock options |  |  | 253,427 |  |  |  | 253,427
Exercise of stock options | 64,834 |  | 12,374 |  |  |  | 77,208
Sale of treasury stock |  |  | 440,420 |  |  | 634,268 | 1,074,688
Stock Dividends | 274 | 12,768 | 30,779 |  | (43,821) |  |
Conversion Class C to Class A | 17,016 | (17,016) |  |  |  |  |
Balance at Sep. 30, 2016 | $ 26,300,324 | $ 3,415,032 | $ 30,969,582 | $ 2,025,048 | $ 64,420,459 | $ (1,545,161) | $ 125,585,284

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