Consolidated Statements of Changes in Stockholders' Equity (unaudited) (USD $)	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]
Balance at beginning of period at Dec. 31, 2009	$ 81,608,453	$ 24,582,675	$ 15,768,840	$ 42,518,889	$ (1,261,951)
Balance (in shares) at Dec. 31, 2009		4,916,535
Comprehensive income:
Net income	62,469	0	0	62,469	0
Unrealized holding gains arising during the period (net of tax, $459,084, and reclassification adjustment)	891,164	0	0	0	891,164
Total comprehensive income	953,633	0	0	62,469	891,164
Exercise of stock options	103,601	46,875	56,726	0	0
Exercise of stock options (in shares)		9,375
Tax benefit from disqualification of stock options	10,503	0	10,503	0	0
Stock compensation expense	56,908	0	56,908	0	0
Cash dividends	(738,512)	0	0	(738,512)	0
Balance at end of period at Jun. 30, 2010	81,994,586	24,629,550	15,892,977	41,842,846	(370,787)
Balance (in shares) at Jun. 30, 2010		4,925,910
Balance at beginning of period at Dec. 31, 2010	80,951,649	24,684,945	16,026,062	42,809,769	(2,569,127)
Balance (in shares) at Dec. 31, 2010	4,936,989	4,936,989
Comprehensive income:
Net income	1,379,954	0	0	1,379,954	0
Unrealized holding gains arising during the period (net of tax, $459,084, and reclassification adjustment)	1,957,113	0	0	0	1,957,113
Total comprehensive income	3,337,067	0	0	1,379,954	1,957,113
Exercise of stock options	235,805	91,350	144,455	0	0
Exercise of stock options (in shares)		18,270
Stock compensation expense	55,087	0	55,087	0	0
Cash dividends	(494,613)	0	0	(494,613)	0
Balance at end of period at Jun. 30, 2011	$ 84,084,995	$ 24,776,295	$ 16,225,604	$ 43,695,110	$ (612,014)
Balance (in shares) at Jun. 30, 2011	4,955,259	4,955,259