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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, 2011 | $ 19,277,596 | $ 2,027,195 | $ 19,487,565 | $ 654,443 | $ 22,546,623 | $ (2,762,835) | $ 61,230,587
Net earnings |  |  |  |  | 5,255,215 |  | 5,255,215
Other comprehensive income |  |  |  | 1,940,010 |  |  | 1,940,010
Grant of stock options |  |  | 94,436 |  |  |  | 94,436
Sale of treasury stock |  |  | (98,025) |  |  | 256,956 | 158,931
Balance at Jun. 30, 2012 | 19,277,596 | 2,027,195 | 19,483,976 | 2,594,453 | 27,801,838 | (2,505,879) | 68,679,179
Balance at Dec. 31, 2012 | 21,687,152 | 2,194,820 | 21,262,140 | 1,934,359 | 35,114,072 | (2,380,434) | 79,812,109
Net earnings |  |  |  |  | 4,832,511 |  | 4,832,511
Other comprehensive income |  |  |  | 315,978 |  |  | 315,978
Grant of stock options |  |  | 62,589 |  |  |  | 62,589
Exercise of stock options | 265,842 | 422,422 | 104,185 |  |  | (543,334) | 249,115
Sale of treasury stock |  |  | 175,956 |  |  | 68,314 | 244,270
Stock Dividends | (200) |  | (526) |  | 726 |  |
Conversion Class C to Class A | 83,246 | (83,245) | (1) |  |  |  |
Balance at Jun. 30, 2013 | $ 22,036,040 | $ 2,533,997 | $ 21,604,343 | $ 2,250,337 | $ 39,947,309 | $ (2,855,454) | $ 85,516,572

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