STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (USD $)	Preferred Stock Series I, Class B USD ($)	Preferred Stock Series II, Class B USD ($)	Preferred Stock Series III, Class B USD ($)	Preferred Stock Series IV, Class B USD ($)	Preferred Stock Series V, Class B USD ($)	Common Stock	Additional Paid-in Capital USD ($)	Retained Earnings USD ($)	Treasury Stock USD ($)	Total USD ($)
Balance at Dec. 31, 2011	$ 103,500	$ 178,700	$ 130,245	$ 542,500	$ 46,607		$ 57,284,670	$ (19,634,770)		$ 38,651,452
Balance (in shares) at Dec. 31, 2011	103,500	178,700	130,245	542,500	46,607	25,318,700
Increase (Decrease) in Stockholders' Equity
Recognition of stock option exercise							1,620,701			1,620,701
Recognition of stock option exercise (in shares)						2,000,865
Dividends							(288,063)			(288,063)
Repurchase of Common Stock									(122,202)	(122,202)
Repurchase of Common Stock (in shares)						(67,102)
Net loss								(4,132,892)		(4,132,892)
Balance at Dec. 31, 2012	103,500	178,700	130,245	542,500	46,607		58,617,308	(23,767,662)	(122,202)	35,728,996
Balance (in shares) at Dec. 31, 2012	103,500	178,700	130,245	542,500	46,607	27,252,463
Increase (Decrease) in Stockholders' Equity
Conversion of Preferred Stock into Common Stock					(6,607)		6,607
Conversion of Preferred Stock into Common Stock (in shares)					(6,607)	6,607
Recognition of stock option compensation							52,775			52,775
Recognition of stock option exercise							536,925			536,925
Recognition of stock option exercise (in shares)						584,450
Dividends							(230,449)			(230,449)
Repurchase of Common Stock									(974,407)	(974,407)
Repurchase of Common Stock (in shares)						(655,818)
Net loss								(6,213,852)		(6,213,852)
Balance at Dec. 31, 2013	103,500	178,700	130,245	542,500	40,000		58,983,166	(29,981,514)	(1,096,609)	28,899,988
Balance (in shares) at Dec. 31, 2013	103,500	178,700	130,245	542,500	40,000	27,187,702
Increase (Decrease) in Stockholders' Equity
Conversion of Preferred Stock into Common Stock	(5,000)	(2,500)					7,500
Conversion of Preferred Stock into Common Stock (in shares)	(5,000)	(2,500)				7,500
Recognition of stock option compensation							398,328			398,328
Recognition of stock option exercise (in shares)						418,195
Dividends							(115,225)			(115,225)
Net loss								(2,354,605)		(2,354,605)
Balance at Dec. 31, 2014	$ 98,500	$ 176,200	$ 130,245	$ 542,500	$ 40,000		$ 59,273,769	$ (32,336,119)	$ (1,096,609)	$ 26,828,486
Balance (in shares) at Dec. 31, 2014	98,500	176,200	130,245	542,500	40,000	27,613,397