Consolidated Statement of Changes in Stockholders' Equity (Unaudited) - USD ($)	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock, Common [Member]	Deferred Compensation, Share-Based Payments [Member]	Retained Earnings [Member]	Total
Balance (in shares) at Dec. 31, 2021	26,807,145
Balance at Dec. 31, 2021	$ 195,235	$ 93,100,129	$ (2,404,458)	$ (6,842,195)	$ (65,379,805)	$ 18,668,906
Issuance of common stock under equity incentive plan (in shares)	61,600
Issuance of common stock under equity incentive plan	$ 62	267,856	0	(12,330)	0	255,588
Deferred compensation amortization				295,092		295,092
Purchase of treasury stock costs	0	0	(66,494)	0	0	(66,494)
Net income (loss)	0	0	0	0	(1,622,270)	(1,622,270)
Warrant compensation costs	$ 0	8,985	0	0	0	8,985
Balance (in shares) at Mar. 31, 2022	26,868,745
Balance at Mar. 31, 2022	$ 195,297	93,376,970	(2,470,952)	(6,559,433)	(67,002,075)	17,539,807
Balance (in shares) at Dec. 31, 2022	27,044,900
Balance at Dec. 31, 2022	$ 195,471	94,048,603	(3,749,027)	(5,697,900)	(70,863,049)	13,934,098
Issuance of common stock under equity incentive plan (in shares)	1,421,250
Issuance of common stock under equity incentive plan	$ 1,421	2,638,529	0	(2,444,054)	0	195,896
Deferred compensation amortization				308,676		308,676
Purchase of treasury stock costs	0	0	(8,529)	0	0	(8,529)
Net income (loss)	$ 0	0	0	0	14,833	14,833
Balance (in shares) at Mar. 31, 2023	28,466,150
Balance at Mar. 31, 2023	$ 196,892	$ 96,687,132	$ (3,757,556)	$ (7,833,278)	$ (70,848,216)	$ 14,444,974