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Consolidated Statements of Retained Earnings (USD $)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Consolidated Statements of Retained Earnings    
Retained earnings at beginning of year $ 27,207,970us-gaap_RetainedEarningsAccumulatedDeficit $ 25,337,604us-gaap_RetainedEarningsAccumulatedDeficit
Net income 1,951,889us-gaap_NetIncomeLoss 2,479,029us-gaap_NetIncomeLoss
Cash dividends paid, $1.12 and $0.63 per share in 2014 and 2013, respectively (1,082,068)us-gaap_Dividends (608,663)us-gaap_Dividends
Retained earnings at end of year $ 28,077,791us-gaap_RetainedEarningsAccumulatedDeficit $ 27,207,970us-gaap_RetainedEarningsAccumulatedDeficit