Statements of Stockholders' Equity - USD ($)	Common Stock [Member]	Treasury Stock [Member]	Warrants [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]	Total
Balance at Dec. 31, 2021	$ 11,921	$ (60,000)	$ 702,492	$ 108,418,304	$ (82,740,335)	$ 26,332,382
Balance (in shares) at Dec. 31, 2021	11,921,388
Treasury stock, shares (in shares) at Dec. 31, 2021		117,223
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Expiration of Warrant			(134,520)	134,520		0
Issuance of common stock for cash upon exercise of options	$ 10	$ 0	0	16,141	0	16,151
Issuance of common stock for cash upon exercise of options (in shares)	9,445	0
Share-based compensation expense	$ 0	$ 0	0	106,526	0	106,526
Net loss	0	$ 0	0	0	(5,517,131)	(5,517,131)
Treasury stock, shares (in shares) at Jun. 30, 2022		117,223
Balance at Jun. 30, 2022	$ 11,931	$ (60,000)	567,972	108,675,491	(88,257,466)	20,937,928
Balance (in shares) at Jun. 30, 2022	11,930,833
Balance at Mar. 31, 2022	$ 11,921	$ (60,000)	702,492	108,462,663	(85,623,365)	23,493,711
Balance (in shares) at Mar. 31, 2022	11,921,388
Treasury stock, shares (in shares) at Mar. 31, 2022		117,223
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Expiration of Warrant			(134,520)	134,520		0
Issuance of common stock for cash upon exercise of options	$ 10	$ 0	0	16,141	0	16,151
Issuance of common stock for cash upon exercise of options (in shares)	9,445	0
Share-based compensation expense	$ 0	$ 0	0	62,167	0	62,167
Net loss	0	$ 0	0	0	(2,634,101)	(2,634,101)
Treasury stock, shares (in shares) at Jun. 30, 2022		117,223
Balance at Jun. 30, 2022	$ 11,931	$ (60,000)	567,972	108,675,491	(88,257,466)	20,937,928
Balance (in shares) at Jun. 30, 2022	11,930,833
Balance at Dec. 31, 2022	$ 11,987	$ (60,000)	567,972	108,857,065	(94,134,505)	$ 15,242,519
Balance (in shares) at Dec. 31, 2022	11,986,927					11,986,927
Treasury stock, shares (in shares) at Dec. 31, 2022		117,223				117,223
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock and warrants in connection with April 2023 Financing, net of issuance costs	$ 1,318	$ 0	2,526,664	818,014	0	$ 3,345,996
Issuance of common stock and warrants in connection with April 2023 Financing, net of issuance costs (in shares)	1,318,000	0
Issuance of common stock in connection with at-the-market offering, net of issuance costs	$ 3	$ 0	0	3,365	0	3,368
Issuance of common stock in connection with at-the-market offering, net of issuance costs (in shares)	2,869	0
Issuance of common stock in connection with ESPP	$ 3	$ 0	0	1,694	0	1,697
Issuance of common stock in connection with ESPP (in shares)	3,858	0
Exercise of pre-funded warrants	$ 1,879	$ 0	(1,176,533)	1,174,842	0	188
Exercise of pre-funded warrants (in shares)	1,878,722	0
Share-based compensation expense	$ 0	$ 0	0	122,170	0	122,170
Net loss	0	$ 0	0	0	(5,839,765)	$ (5,839,765)
Treasury stock, shares (in shares) at Jun. 30, 2023		117,223				117,223
Balance at Jun. 30, 2023	$ 15,190	$ (60,000)	1,918,103	110,977,150	(99,974,270)	$ 12,876,173
Balance (in shares) at Jun. 30, 2023	15,190,376					15,190,376
Balance at Mar. 31, 2023	$ 11,990	$ (60,000)	567,972	108,917,384	(97,080,762)	$ 12,356,584
Balance (in shares) at Mar. 31, 2023	11,989,796
Treasury stock, shares (in shares) at Mar. 31, 2023		117,223
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock and warrants in connection with April 2023 Financing, net of issuance costs	$ 1,318	$ 0	2,526,664	818,014	0	3,345,996
Issuance of common stock and warrants in connection with April 2023 Financing, net of issuance costs (in shares)	1,318,000	0
Issuance of common stock in connection with at-the-market offering, net of issuance costs	$ 0	$ 0	0	0	0	0
Issuance of common stock in connection with at-the-market offering, net of issuance costs (in shares)	0	0
Issuance of common stock in connection with ESPP	$ 3	$ 0	0	1,694	0	1,697
Issuance of common stock in connection with ESPP (in shares)	3,858	0
Exercise of pre-funded warrants	$ 1,879	$ 0	(1,176,533)	1,174,842	0	188
Exercise of pre-funded warrants (in shares)	1,878,722	0
Share-based compensation expense	$ 0	$ 0	0	65,216	0	65,216
Net loss	0	$ 0	0	0	(2,893,508)	$ (2,893,508)
Treasury stock, shares (in shares) at Jun. 30, 2023		117,223				117,223
Balance at Jun. 30, 2023	$ 15,190	$ (60,000)	$ 1,918,103	$ 110,977,150	$ (99,974,270)	$ 12,876,173
Balance (in shares) at Jun. 30, 2023	15,190,376					15,190,376