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Stockholders' Equity (Details) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011
Stockholders' Equity (Textual) [Abstract] |  |
Payments for treasury stock | $ (111,854) | $ (214,137)
Stockholders' Equity (Additional Textual) [Abstract] |  |
Condition of electing directors by class a and class b common stock vote | In the election of directors, the holders of Class A common stock are entitled by class vote, exclusive of other stockholders, to elect two of the Company’s directors, with each Class A share being entitled to one vote. In the election of the other six directors and all other matters submitted to the stockholders for a vote, the holders of Class A shares and Class B shares shall vote as a single class, with each Class A share being entitled to one vote and each Class B share entitled to ten votes |
Aggregate amount permitted for cash dividends and share repurchases | 2,000,000 |
Aggregate amount permitted for cash dividends and share repurchases in 2013 | 4,000,000 |
Aggregate amount permitted for cash dividends and share repurchases in 2014 and 2015 | 5,000,000 |
Aggregate amount permitted for cash dividends and share repurchases in 2016 and thereafter | 6,000,000 |
Cash dividends paid | (1,927,564) |
Class A common stock [Member] |  |
Stockholders' Equity (Textual) [Abstract] |  |
Payments for treasury stock | $ (111,854) | $ (214,137)
Purchase of treasury stock, shares | 32,587 | 33,983

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