Consolidated Statement of Comprehensive Income (Unaudited) (Parenthetical) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Consolidated Statement Of Comprehensive Income [Abstract]
Unrealized holding gains (losses) arising during the period	$ 225,592	$ 147,539	$ 73,412	$ 173,128
Less reclassification adjustment for gains recognized in income	$ 167,945	$ 42,588	$ 170,957	$ 42,018