Condensed Consolidated Statements of Retained Earnings (Unaudited) (USD $)	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Retained earnings at beginning of period	$ 24,461,381	$ 23,699,232
Net income	934,166	704,543
Cash dividends declared in the period: $0.30 per share in 2012 and $0.24 per share in 2011	(289,839)	(231,872)
Retained earnings at end of period	$ 25,105,708	$ 24,171,903