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Consolidated Statement Of Comprehensive Income (Parenthetical) (USD $)
3 Months Ended
Mar. 31, 2012
Mar. 31, 2011
Consolidated Statement Of Comprehensive Income [Abstract]    
Unrealized holding (losses) arising during the period, tax $ 36,885 $ 25,589
Reclassification adjustment for gains recognized in income, tax $ 3,013 $ 570