Statements Of Stockholders' Equity And Comprehensive Income (USD $)	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Comprehensive Income [Member]	Total
Balance at Dec. 31, 2009	$ 500,864	$ 3,819,480	$ (345,992)	$ 12,042,889	$ (359,630)		$ 15,657,611
Balance (in Shares) at Dec. 31, 2009	5,008,639
Adjustment for pension termination, net of deferred income tax benefit of $179,641			338,655			338,655	338,655
Change in unrealized loss on marketable securities, net of deferred income tax effect			14,172			14,172	14,172
Acquisition of treasury stock					(3,762,500)		(3,762,500)
Retirement of treasury stock	(41,220)	(3,819,480)		(261,430)	4,122,130
Retirement of treasury stock (in Shares)	(412,200)
Net income				3,799,692		3,799,692	3,799,692
Dividends declared				(3,000,757)			(3,000,757)
Comprehensive income						4,101,519
Balance at Dec. 31, 2010	459,644		6,835	12,580,394			13,046,873
Balance (in Shares) at Dec. 31, 2010	4,596,439
Change in unrealized loss on marketable securities, net of deferred income tax effect			27,777			27,777	27,777
Net income				4,716,530		4,716,530	4,716,530
Dividends declared				(3,677,151)			(3,677,151)
Comprehensive income						4,744,307
Balance at Dec. 31, 2011	$ 459,644		$ 34,612	$ 13,619,773			$ 14,114,029
Balance (in Shares) at Dec. 31, 2011	4,596,439