STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($)	Common Stock [Member]	Preferred Stock [Member] Series I, Class B	Preferred Stock [Member] Series II, Class B	Preferred Stock [Member] Series III, Class B	Preferred Stock [Member] Series IV, Class B	Preferred Stock [Member] Series V, Class B	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Series I, Class B	Series II, Class B	Series III, Class B	Total
Balance at Dec. 31, 2018		$ 98,500	$ 171,200	$ 129,245	$ 342,500	$ 40,000	$ 61,871,756	$ (37,039,468)					$ 25,613,733
Balance (in shares) at Dec. 31, 2018	32,666,454	98,500	171,200	129,245	342,500	40,000
Increase (Decrease) in Stockholders' Equity
Conversion of Preferred Stock into Common Stock		$ (2,500)				$ (6,000)	8,500
Conversion of Preferred Stock into Common Stock (in Shares)	8,500	(2,500)				(6,000)
Dividends							(219,512)						(219,512)
Net income								3,148,234					3,148,234
Balance at Dec. 31, 2019		$ 96,000	$ 171,200	$ 129,245	$ 342,500	$ 34,000	61,660,744	(33,891,234)					28,542,455
Balance (in shares) at Dec. 31, 2019	32,674,954	96,000	171,200	129,245	342,500	34,000
Increase (Decrease) in Stockholders' Equity
Exchange of Preferred Stock for Common Stock				$ (22,500)	$ (342,500)	$ (34,000)	(3,090,672)						(3,489,672)
Exchange of Preferred Stock for Common Stock (in shares)	754,000			(22,500)	(342,500)	(34,000)
Conversion of Preferred Stock into Common Stock		$ (81,700)	$ (15,000)				96,700
Conversion of Preferred Stock into Common Stock (in Shares)	96,700	(81,700)	(15,000)								15,000	0
Stock Option Exercises							922,512						922,512
Stock Option Exercises (in shares)	431,550
Redemption		$ (14,300)					(92,950)						(107,250)
Redemption (in shares)		(14,300)								14,300
Dividends							(210,933)						(210,933)
Net income								24,223,013					24,223,013
Balance at Dec. 31, 2020			$ 156,200	$ 106,745			59,285,401	(9,668,221)					49,880,125
Balance (in shares) at Dec. 31, 2020	33,957,204		156,200	106,745
Increase (Decrease) in Stockholders' Equity
Conversion of Preferred Stock into Common Stock				$ (30,500)			30,500
Conversion of Preferred Stock into Common Stock (in Shares)	30,500			(30,500)							0	30,500
Stock Option Exercises							48,600						48,600
Stock Option Exercises (in shares)	25,400
Redemption													(6,000)
Dividends								(5,213,591)					(5,213,591)
Stock option compensation							3,660,387						3,660,387
Repurchase of Common Stock	$ (528,169)								$ (5,270,501)				(5,270,501)
Net income								56,064,241					56,064,241
Balance at Dec. 31, 2021			$ 156,200	$ 76,245			$ 63,024,888	$ 41,182,429	$ (5,270,501)				$ 99,169,261
Balance (in shares) at Dec. 31, 2021	33,484,935		156,200	76,245