CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (USD $)	ADDITIONAL PAID IN CAPITAL [Member]	RETAINED EARNINGS [Member]	TREASURY STOCK [Member]	ACCUMULATED OTHER COMPREHENSIVE INCOME [Member]	Total
Balance, beginning at Dec. 31, 2011	$ 28,390,929	$ 3,491,678	$ (1,902,439)	$ 2,013,701	$ 31,993,869
Net income		3,666,828			3,666,828
Other comprehensive income (loss)				186,390	186,390
Exercise of stock options	11,094				11,094
Stock-based compensation expense	72,928				72,928
Cash dividends		(2,000,667)			(2,000,667)
Balance, ending at Dec. 31, 2012	28,474,951	5,157,839	(1,902,439)	2,200,091	33,930,442
Net income		4,076,924			4,076,924
Other comprehensive income (loss)				(1,244,191)	(1,244,191)
Exercise of stock options	128,477				128,477
Stock-based compensation expense	74,722				74,722
Cash dividends		(2,227,231)			(2,227,231)
Balance, ending at Dec. 31, 2013	28,678,150	7,007,532	(1,902,439)	955,900	34,739,143
Net income		4,398,820			4,398,820
Other comprehensive income (loss)				287,122	287,122
Exercise of stock options	26,050				26,050
Stock-based compensation expense	74,908				74,908
Cash dividends		(2,766,061)			(2,766,061)
Balance, ending at Dec. 31, 2014	$ 28,779,108	$ 8,640,291	$ (1,902,439)	$ 1,243,022	$ 36,759,982