STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($)	Preferred Stock Series I, Class B	Preferred Stock Series II, Class B	Preferred Stock Series III, Class B	Preferred Stock Series IV, Class B	Preferred Stock Series V, Class B	Common Stock	Additional Paid-In Capital	Retained Earnings	Treasury Stock	Total
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	96,000	171,200	129,245	342,500	34,000	32,674,954
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)			(22,500)	(342,500)	(34,000)	754,000
Conversion of Preferred Stock into Common Stock	$ (81,700)	$ (15,000)					96,700
Conversion of Preferred Stock into Common Stock (in shares)	(81,700)	(15,000)				96,700
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)
Dividends							(210,933)			(210,933)
Net income								24,223,013		24,223,013
Balance at Dec. 31, 2020	$ 0	$ 156,200	$ 106,745	$ 0	$ 0		59,285,401	(9,668,221)		49,880,125
Balance (in shares) at Dec. 31, 2020	0	156,200	106,745	0	0	33,957,204
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)		0	(30,500)			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 - at cost						$ (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		156,200	76,245			33,484,935
Increase (Decrease) in Stockholders' Equity
Conversion of Preferred Stock into Common Stock (in shares)		0	0
Stock Option Exercises							13,800			13,800
Stock Option Exercises (in shares)						11,200
Redemption										(6,000)
Dividends								(232,445)		(232,445)
Stock Option Compensation							10,125,813			10,125,813
Repurchase of Common Stock - at cost						$ (3,558,976)			(7,618,177)	(7,618,177)
Net income								5,078,557		5,078,557
Balance at Dec. 31, 2022		$ 156,200	$ 76,245				$ 73,164,501	$ 46,028,541	$ (12,888,678)	$ 106,536,809
Balance (in shares) at Dec. 31, 2022		156,200	76,245			29,937,159