Consolidated Statements of Changes in Stockholders' Equity (unaudited) (USD $)	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]	Total
Balance at Dec. 31, 2010	$ 24,684,945	$ 16,026,062	$ 42,809,769	$ (2,569,127)	$ 80,951,649
Balance (in shares) at Dec. 31, 2010	4,936,989
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	0	0	1,379,954	0	1,379,954
Other comprehensive income, net of tax	0	0	0	1,957,113	1,957,113
Exercise of stock options	91,350	144,455	0	0	235,805
Exercise of stock options (in shares)	18,270
Stock compensation expense	0	55,087	0	0	55,087
Cash dividends	0	0	(494,613)	0	(494,613)
Balance at Jun. 30, 2011	24,776,295	16,225,604	43,695,110	(612,014)	84,084,995
Balance (in shares) at Jun. 30, 2011	4,955,259
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				4,959,009
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	0	0	1,716,508	0	1,716,508
Other comprehensive income, net of tax	0	0	0	249,407	249,407
Stock compensation expense	0	55,330	0	0	55,330
Cash dividends	0	0	(495,901)	0	(495,901)
Balance at Jun. 30, 2012	$ 24,795,045	$ 16,365,313	$ 46,329,875	$ (100,174)	$ 87,390,059
Balance (in shares) at Jun. 30, 2012	4,959,009				4,959,009