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Condensed Consolidated Statements of Retained Earnings (Unaudited) - USD ($)
6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Condensed Consolidated Statements of Retained Earnings    
Retained earnings at beginning of period $ 28,077,791 $ 27,207,970
Net income 1,033,434 1,137,427
Cash dividends declared, $0.61 per share in 2015 and $0.76 per share in 2014 (589,341) (734,260)
Retained earnings at end of period $ 28,521,884 $ 27,611,137