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Consolidated Statements of Comprehensive Income (Parenthetical) (USD $) | 12 Months Ended
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Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009
Unrealized holding gains (losses) arising during the period, deferred taxes (benefits) | $ 2,008,578 | $ (13,677) | $ 18,260
Reclassification adjustment for impairment loss included in net income, deferred tax benefits | 8,722 | 104,293 | 30,539
Reclassification adjustment for gains included in net income, deferred taxes | $ 134,696 | $ 69,671 | $ 233,034

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