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	2,790,696	0	2,790,696
Other comprehensive loss, net of tax	0	0	0	2,403,011	2,403,011
Stock compensation expense	0	81,060	0	0	81,060
Cash dividends	0	0	(743,851)	0	(743,851)
Balance at Sep. 30, 2012	24,795,045	16,391,043	47,156,113	2,053,430	90,395,631
Balance (in shares) at Sep. 30, 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	2,953,476	0	2,953,476
Other comprehensive loss, net of tax	0	0	0	(11,303,284)	(11,303,284)
Cash dividends	0	0	(793,441)	0	(793,441)
Balance at Sep. 30, 2013	$ 24,795,045	$ 16,391,845	$ 50,464,644	$ (11,494,747)	$ 80,156,787
Balance (in shares) at Sep. 30, 2013	4,959,009				4,959,009