Consolidated Statements of Changes in Stockholders' Equity (unaudited) (USD $)	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total
Balance at Dec. 31, 2011	$ 24,795,045	$ 16,309,983	$ 45,109,268	$ (349,581)	$ 85,864,715
Balance (in shares) at Dec. 31, 2011	4,959,009
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	0	0	1,078,301	0	1,078,301
Other comprehensive loss, net of tax	0	0	0	(754,624)	(754,624)
Stock compensation expense	0	27,837	0	0	27,837
Cash dividends	0	0	(247,951)	0	(247,951)
Balance at Mar. 31, 2012	24,795,045	16,337,820	45,939,618	(1,104,205)	85,968,278
Balance (in shares) at Mar. 31, 2012	4,959,009
Balance at Dec. 31, 2012	24,795,045	16,391,845	48,304,609	(191,463)	89,300,036
Balance (in shares) at Dec. 31, 2012	4,959,009				4,959,009
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	0	0	901,317	0	901,317
Other comprehensive loss, net of tax	0	0	0	(1,726,547)	(1,726,547)
Cash dividends	0	0	(247,950)	0	(247,950)
Balance at Mar. 31, 2013	$ 24,795,045	$ 16,391,845	$ 48,957,976	$ (1,918,010)	$ 88,226,856
Balance (in shares) at Mar. 31, 2013	4,959,009				4,959,009